CLICK!

Support my work by donation. Thank you!
Click here for more info!

Flag Counter

TESTC750 Release 2021-10-03
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.c4 e6

(...)

5.Qa4 Qd7 6.Qa3 =+.

5.Qa4 Nbd7 6.Nf3 c6 7.c5 a5 (7...Be7 8.Nd4=+) 8.Bf6 Qf6 9.Nc3 Qd8 (9...e5 10.d4=+) 10.d4 ab4 11.Qb4 b6 12.Na4 bc5 13.Nc5 Ra5 (13...Nc5 14.dc5 Ra5 15.Qd4–/+) 14.Rc1 (14.g4 Be4 15.Bg2–+) 14...Ra2 15.Qb3 (15.Be2–+) 15...Qa5 16.Kd1 (16.Qc3 Nc5 17.dc5 Bc5 18.Qa5 Ra5–+) 16...Bc5 (16...Nc5 17.dc5 Rf2 18.Qb8 Qd8 19.Qd8 Kd8 20.Ne5–+) 17.dc5 0–0 (17...Bg4 18.Qd3–+) 18.Qc3 (18.Qb7 Qa4 19.Ke1 e5–+) 18...Qc3 19.Rc3 Rb8 20.Nd4 Rf2 (20...Rb1 21.Rc1 Rc1 22.Kc1 Rf2 23.g3–+) 21.Rc1? (21.Ke1 Ra2 22.Rb3 Rb3 23.Nb3 Ra3–+) 21...Ra2 (better is 21...Ne5–+) 22.Nc6–/+ Bg4 23.Ke1 Rb3 24.Nd4 (24.Ne7 Kf8 25.Nd5 ed5 26.Ba6 Re3 27.Kf1 Ra6 28.c6–+) 24...Re3 25.Be2 Re4 (< 25...Rae2 26.Ne2 Re2 27.Kf1–+; < 25...Ree2 26.Ne2 Re2 27.Kf1–+) 26.c6 Be2 (26...Rd4?! 27.Bg4 Re4 28.Kd1–+) 27.Ne2 Ree2 (28.Kf1 Nb6–+) 0–1. Diener,Rudolf – Rohde,Friedhelm, corr SOK–92–86, 1992.

5.Qb3 dc4 6.Bc4 Nc6 7.a3 Bd6 8.Nf3 a6 9.d4 0–0 =.

5.Qb3 c6 6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.Qb3).

5.b5 Bc5 6.Nf3 Nbd7 7.d4 Bb4 8.Bc3 Bc3 (8...Be7 9.c5=) 9.Nc3 dc4 10.Bc4 0–0 11.0–0 a6 12.a4 (12.ba6 ba6 13.Qe2 c5+=) 12...c6 (12...ab5 13.ab5 Qe7 14.Qb3=) 13.Nh4 (13.ba6 ba6 14.Rc1 Qa5+=) 13...Bg6 (13...cb5 14.ab5 Qc7 15.Nf5 ef5 16.Bd5=+) 14.Qf3 (14.Ng6 hg6 15.ba6 ba6+–) 14...ab5 (better 14...Bh5!? 15.Qg3 cb5–/+) 15.ab5 (15.Ng6 hg6 16.ab5 c5+–) 15...Ra1 16.Ra1 cb5 (16...Bh5 17.Qf4+=) 17.Nb5 (17.Ng6 hg6 18.Nb5 Qb6+–) 17...e5? (better 17...Be4!? 18.Qh3 Qe7=) 18.Ng6+– hg6 19.Ra7 (19.Qb7!? ed4 20.Nd4 Qb8 21.Qb8 Rb8+–) 19...ed4 20.Nd4 (20.ed4 Qc8 21.Bf1 b6+–) 20...Nc5 (20...Ne5 21.Qe2+=) 21.Be2 (21.Bb5 Qd5+–) 21...Qb6 22.Ra3 (22.Nb5 Rd8+=) 22...Qb1+= 23.Bf1 Nce4 (23...Rd8 24.Ra7+=) 24.Qe2 (24.Rb3 Qa2+=) 24...Rc8 25.Rb3 Qa1 26.Qd3?? (26.Rb7 Rc1 27.Nf3 Nd5+–) 26...Rc3?? (better 26...Rc1 27.Ra3 Rf1 28.Qf1 Qa3–+) 27.Rc3+= Qc3 28.Qe4?? (better 28.f3 Qd3 29.Bd3+=) 28…Ne4–+ 0–1. AhmedSultanov – Yarresh1052, lichess.org, 2019.

5.Nc3 Bb4 6.cd5 ed5 7.Qa4 Nc6 8.Bb5 Qd6 9.a3 Bc3 10.Bc3 0–0 11.Ne2 Ne7 12.Qf4 Ne4 13.Qd6 Nd6 (worse 13...cd6 14.Nd4=) 14.Bb4 Rfd8 15.Rc1 c6 16.Ba4 Rac8 17.d4 b6 18.f3 a5 19.Bd6 Rd6 20.Rc3 b5 21.Bd1 Re8 22.Kf2 Nc8 23.a4 (23.Ng3!? Bg6 24.h4–/+) 23...Nb6–+ 24.Rc5 Bd7 (24...Na4?! 25.Ba4 ba4 26.Rhc1=+) 25.Nf4 Ra8 (25...g5 26.Nh5–+) 26.h4 g6 27.g4 Kg7 (27...Na4?! 28.Ba4 ba4 29.Ra1=) 28.Bc2 b4 29.Bb3 Bc8 30.Rhc1 Bb7 31.R5c2 h6 32.Nd3 Nd7 33.Nc5 Nc5 34.Rc5 Rf6 35.Kg3 Rd6 36.Kf2 Ra7 37.Ke2 Kf6 38.e4 ½–½. kingchecker9 (2320) – alekhinebattery (2310), gameknot.com, 2020.

5.c5 b6 6.d4 (6.Qa4 Qd7 7.c6 Qd8= (7...Qc6?? 8.Bb5 Qb5 9.Qb5 Nfd7 10.Qa4+–)) 6...bc5 7.Qa4 (7.dc5 Be7+=) 7...c6 (7...Qd7!? 8.Qd7 Nbd7 9.dc5 Rb8–/+) 8.dc5 (8.bc5 Nbd7 9.Nd2 Qc7=) 8...Be7 (8...a5!?+=) 9.Nf3= a5 10.Ne5 (10.Nd4 Nbd7 11.Nc6 ab4=) 10...0–0 11.a3 Qc7 12.Nd2 Nfd7 13.Nd7 (13.Nef3!?+=) 13...Nd7–/+ (13...Qd7?! 14.Rc1=) 14.Qb3 (14.Qd1 ab4 15.ab4 Qb7–/+) 14...Bf6 (better is 14...Rfb8!?–+) 15.Bf6–/+ Nf6 16.Be2 ab4 17.Qb4 Rfb8 18.Qc3 Qb7 (18...Qa5 19.Qa5 Ra5 20.Bd1–/+) 19.0–0 (19.g4!? Bg6 20.h4+=) 19...Qb2–/+ 20.Qb2 Rb2 21.Rfd1 Ne4 (21...Bc2!? 22.Re1–+) 22.Ne4–/+ Be4 (22...de4?! 23.Kf1 Rc2 24.a4=) 23.Bd3 Bd3 24.Rd3 Rab8 25.Rdd1 Re2 (25...R8b5 26.Rdc1–/+) 26.Re1 (26.Rdb1 Rb1 27.Rb1 Kf8+=) 26...Rc2 27.Rec1 ½–½. Hal1958 – Johnalle, playchess.de, 2002.

5.d4 Bb1 6.Rb1 Bb4 7.Ke2 0–0 8.c5 Ba5 9.Nf3 c6 10.g3 b5 11.Bg2 a6 12.Qc2 Ne4 13.Rhd1 Nd7 14.Bc1? (better 14.Ne1 f5 15.f3–/+) 14...Nc3–+ 15.Kd3 (15.Kf1 Qe7–+) 15...Nb1 (better 15...Qf6!? 16.Rb2–+) 16.Qb1 Qf6 17.Qc2 (17.Ke2–+) 17...Qf5 18.e4 Qe4 0–1. moss42 (1825) – Brennybhoy (1790), ChessWorld.net, 2015.

5.Qa4 c6

6.b5 Bd6 7.Nc3 0–0 8.Be2 Ne4 9.Nf3 (9.cd5 Nc5 10.Qd4 ed5=) 9...cb5 (better is 9...Nc5!? 10.Qd1 dc4 11.Bc4 Bd3 12.Bd3 Nd3 13.Ke2 Nb2–/+) 10.cb5 Qc7 (10...Nd7 11.d3 Nc3 12.Bc3+=) 11.0–0 Nd7 12.Ne4 (better is 12.Rfc1!? Nb6 13.Qa5 Nc3 14.Bc3=) 12...de4–/+ (12...Be4?! 13.Ba3+=) 13.Rfc1 Qb8 14.Nd4 Bh2 15.Kf1 Be5 16.Ba3 (16.Ke1 Qd8–/+) 16...Rc8 (16...Nb6 17.Qa5 Bd4 18.ed4–+) 17.Qb4 (17.Rc8 Qc8 18.Rc1 Qd8–/+) 17...Rc1 18.Rc1 Nf6 (18...Bd4 19.Qd4 Qh2 20.f3–/+) 19.f4 (19.Nf5 ef5 20.Qe7+=) 19...Bf4?? (better is 19...ef3 20.Nf3 Bg3–/+) 20.ef4 Qf4 21.Kg1 Bg4 22.Rf1 Qg3 23.Qb3 (better is 23.Qc3 Qc3 24.dc3 Be2 25.Ne2+=) 23...Qh4?? (better is 23...Qb3!? 24.ab3 Rd8 25.Bg4 Ng4+=) 24.Bg4 (24.Be7!?+/–) 24...Ng4 25.Qh3 Qg5 Black intends e3 26.Bb4 Rc8 27.Bc3 e3 28.Qg3 (28.Nf3!? Qg6 29.Qg3=) 28...ed2+= 29.Nf3?? (better is 29.Bd2 Qd2 30.Qg4=) 29...Qe3–+ 30.Qf2 (30.Kh1 Nf2!! 31.Kh2 Qh6 32.Kg1–+) 30...Nf2 (better is 30...Qf2 31.Rf2 d1Q 32.Rf1 Qd6–+) 31.Rf2 (31.Bd2 Nh3 32.Kh2–+) 31...Rc3 (31...d1Q 32.Ne1 Rc3 33.Kh2 Qf2 34.Nf3 Qdf3 35.b6 Q2g2) 32.Nd2 Rc1 33.Kh2 Qh6 (33...Qf2 34.Nf3 f5 35.Kh3 Rh1 36.Nh2 g5 37.b6 g4) 34.Kg3 Rc3 (better is 34...Qg5 35.Kf3 Rc3 36.Ke2 Qe3 37.Kd1 Qf2 38.a3 Rd3 39.Kc2 Qd2 40.Kb1 Rb3 41.Ka1 Qb2) 35.Nf3 g5 36.Kg4 f5 37.Kg3 Qh4 0–1. hen4daleko – zdzgala, kurnik, 2014.

6.c5 Nbd7 =+.

6.Nf3 dc4 7.b5–/+ (7.Bc4? b5 8.Bb5 cb5 9.Qb5 Nbd7–+).

6.Nf3 Nbd7 7.Nc3 (7.Qb3 dc4 8.Bc4 Be4=+) 7...Nb6 (7...dc4 8.b5 Nb6 9.Qa5–/+) 8.Qb3 dc4 9.Bc4 Be7 (9...Nc4 10.Qc4 Bd3 11.Qb3–/+) 10.Be2=+ 0–0 11.Nh4 (11.d3 Bg4=+ (11...Bd3? 12.Rd1+–)) 11...Bd3–/+ 12.g3 (12.Nf3–/+) 12...Be4 (better is 12...Nc4! 13.Nf3 e5–/+) 13.Ne4=+ Ne4 14.Nf3 (14.d3 Nf6=) 14...Nd5 (14...Qd5 15.Qd5 cd5 16.a3=+) 15.a3 Ndf6 (15...a5 16.Qc2 f5 17.Nd4=) 16.d3 Nd6 17.e4 Nfe8 (17...Nd7 18.0–0=) 18.0–0 Nb5 19.Rfd1 a5 (19...Nf6 20.a4 Nc7 21.Bf6 Bf6 22.d4=) 20.a4 Nbd6 21.ba5 Ra5 22.e5+– Nf5 23.Qb7 c5 24.Bc3 Ra8 25.Qe4 g6 26.g4 Nfg7 27.d4 Qc8 28.Bb5 Nc7 29.Bc6 Nd5+/– 30.Bd5 ed5 31.Qf4 c4 32.h3 Ne6 33.Qh6 f5 34.Kg2?? fg4–+ 35.hg4 Nf4 36.Kg3 Ne2 0–1. Diener,Rudolf – Frenzel,Lothar, corr SOK–88–25, 1988.

5.Qb3 Nc6

6.a3 a5 7.cd5 Nd5 8.b5 a4 9.Qd1 Na5 =.

6.a3 a6 7.cd5 ed5 8.Bd3 Bg4 9.h3 Be6 =.

6.a3 dc4 7.Bc4 Bd6 8.Nf3 a6 9.d4 0–0 =.

6.c5 a5 7.Bb5 (7.a3 ab4 8.ab4 Ra1 9.Ba1 Be7=+) 7...ab4–/+ 8.d4 Be7 9.Nd2 0–0 10.Ngf3 Ra5 11.a4 ba3 12.Bc6 (12.Ra3 Ra3 13.Ba3 Bg4=+) 12...bc6–/+ 13.0–0 Qb8 14.Ba3 Qb3 15.Nb3 Rb5 16.Nbd2 Nd7 17.Bc1 e5 (17...Rfb8 18.Ra7–/+) 18.Ra7 e4 19.Ne1 Rc8 20.f3 Bg5 21.Nc2 (21.Kf2 Nf6=+) 21...ef3–/+ 22.Nf3 Bh6 23.Ne5 Bc2 24.Nd7 f6 25.Bd2 (better is 25.g4!?–/+) 25...Be4 26.Bc1 (26.Kf2 Bd3 27.Rfa1 Rb2–/+) 26...Rb1 27.Kf2 Bd3 28.Re1 (28.Rd1 Bf5 29.Nf6 gf6–+) 28…Re8 (29.Ra3 Bf5 30.Nf6 gf6–+) 0–1. Zylla,Johannes – Rohde,Friedhelm, corr SOK–96–113, 1996.

5.b5 b6

6.Nf3= c5 7.cd5 Nd5 (7...ed5 8.d3=+) 8.Nc3 Nc3 9.Bc3 Nd7 10.Be2 Nf6 11.Ne5 Bd6 12.Nc6 Qc7 13.f4 Be4 (13...a6 14.Qa4=) 14.Bf3 Bf3 15.Qf3 Be7 (15...a6!?=) 16.Ne7+/– Qe7?? (better is 16...Ke7 17.0–0 a6 18.ba6 Qd7+=) 17.Qa8+– Qd8 18.Qd8 (18.Qc6 Ke7+–) 18...Kd8 19.Bf6 gf6 20.g3 (20.0–0–0 Rg8 21.Rhg1 f5+–) 20...f5 (20...Ke7 21.d3+–) 21.Kf2 (21.d3 Rg8+–) 21...Ke7 22.d4 (22.d3 Rd8 23.Rhd1 h6+–) 22...cd4 23.ed4 Ra8 24.Rhc1 a5 25.Rc7 Kf6 26.Rac1 h5 27.R1c6 a4 28.Rb6 a3 29.Ra6 Rb8 30.b6 Rb6 31.Rb6 Kg6 32.Rbb7 e5 33.fe5 f4 34.Rf7 fg3 35.hg3 Kg5 36.Rg7 Kf5 37.Kf3 h4 38.gh4 Ke6+– 39.h5 Kd5 40.h6 Kd4 41.h7 Ke5 42.h8Q Kf6 43.Rgf7 Ke6 44.Qf6 Kd5 45.Qf5 Kd4 46.Rbd7 Kc3 47.Qe5 Kc2 48.Rc7 Kb1 49.Rb7 Kc2 50.Rfc7 Kd2 51.Qc3 Kd1 52.Rb1# 1–0. Dopper,Johan – de Jonge,Evert, 1994.

6.Nf3 Nbd7 7.Nd4+= dc4 (7...Bg6!?+=) 8.Nf5+– ef5 9.Bc4 Nc5 (9...Bd6 10.Qf3+–) 10.Qf3 g6?? (better 10...Be7+–) 11.Qc6 Ncd7 (11...Nfd7 12.Bh8 a6 13.Bf6+–) 12.Bf6 (12.Bf6 Qf6 13.Qa8 Qd8 14.Bf7 Ke7 15.Qd5+–) 1–0. DEFFM – PamelaLew, freechess.org, 2018.

6.Nf3 h6 7.Be2 (7.Nd4 Bg6=) 7...Be7 (7...dc4 8.Bc4 a6 9.ba6=) 8.cd5 Nd5 9.Nd4 c5? (better 9...Bf6+=) 10.Nf5+– Bf6 11.Ng7 Kf8 12.Ne6! (12.Ne6 fe6 13.d4+–) 1–0. GuestQRYP – GuestLRBN, freechess.org, 2017.

5.b5 Bd6

6.d3 0–0 7.Nf3 Nbd7 (7...a6 8.Nc3+=) 8.Be2 dc4 9.dc4 e5 10.0–0 Qe7 11.Nbd2 Ne4 (11...a6 12.Nh4 Be6 13.ba6 Ra6 14.c5 Nc5 15.Ba6 ba6 16.Nhf3=) 12.Ne4 Be4 13.Nd2 Bg6 14.e4 Bc5 (14...Nc5 15.Qc2+=) 15.Kh1 (15.Bh5 Rad8=) 15...Rad8+= 16.Qc2 Bd6 17.Nb3 Qh4 (17...Nc5 18.Nc5 Bc5 19.f3=) 18.f3= c5 (18...Qe7 19.Rad1=) 19.Bc3 (19.Na5 Nf6 A) worse is 20.Nb7 Ne4 21.Kg1 Ng3 22.hg3 Qe7= (22...Bc2?? 23.gh4 Rd7 24.Nd6 Rd6 25.Be5+–); B) 20.g3+/–) 19...Nf6 (19...f5 20.Rad1 Bc7 21.Bd3=) 20.Be1 Qh5 (20...Qh6 21.Rd1 Rd7 22.Bf2=) 21.Bg3 (better is 21.f4!? Be4 22.Qe4 Qh2 23.Kh2 Ne4 24.Bf3+–) 21...a6 (21...Rd7 22.Rad1 Rfd8 23.Rd3=) 22.f4 (22.Bf2 b6+=) 22...Qh6= 23.fe5?? (better is 23.f5 Bh5 24.ba6 ba6 25.Rad1=) 23...Ne4–+ 24.Bf4 (24.Qe4 Be4 25.ed6 ab5 26.cb5 Bd5–+) 24...Ng3!! 25.Kg1 (25.Bg3 Bc2 Discovered attack) 25...Bc2 26.Bh6 Ne2 (26...gh6?! 27.hg3 Be5 28.Rac1 Bb3 29.ab3 ab5 30.cb5–+) 27.Kf2 Be5 (27...gh6?! 28.ed6 Bb3 29.ab3–+) 28.Rae1 gh6 29.Re2 Bb3 (29...Bb3 30.ab3 Bh2 31.ba6 ba6–+) 0–1. Sternik,Ryszard – Mephisto Exclusiv, Olsztyn, 1993.

6.cd5 ed5 7.Qf3 Be4 8.Bf6 gf6 =.

6.cd5 ed5 7.Nf3 c5 (7...0–0 8.Be2=+) 8.Be2 0–0 9.0–0 Nbd7 10.d4 (10.a4 Re8=+) 10...c4 11.Nc3 Rc8 12.Nd2 (12.Qa4 Bb8=+) 12...Re8 13.Bf3 Be6 (13...Bd3 14.Be2 Be2 15.Qe2=+) 14.e4=+ de4 15.Nde4 Bb8 (15...Ne4 16.Be4 f5 17.Bb7 Bh2 18.Kh2 Qc7 19.f4 Qb7 20.d5=+) 16.Nf6 (16.Ng3 Bg3 17.fg3 Qb6=+) 16...Nf6=+ (< 16...Qf6 17.Bb7 Rcd8 18.Bc6+=) 17.g3 Nd5 18.Re1 Qd7 19.a4 b6 (19...a6 20.Qd2=+) 20.Qd2= Nc3 21.Bc6 Rc6 22.bc6 Qc6 23.Qc3 Bd5 24.Re8 Qe8 25.Re1 Qa4 (better is 25...Qd7=) 26.Qe3+– Bc6 (26...Be6 27.d5! Qe8+–) 27.d5! Bd7 (27...Bd5 28.Qe8) 28.Qe7 (28.Qg5 Be5 29.Be5 f6 30.Bf6 g6 31.Qh6 Qd1 32.Qg7) 28...h6 29.Qd8 Kh7 30.Qb8 Qb4 31.Qe5 f6 32.Qe7 Qb5 (32...Qb2 33.Qd7 Qc2+–) 33.Bf6 (33...Kg6 34.Qg7 Kh5 35.Re5 Bf5 36.Rf5#) 1–0. Gross,Wilhelm – Merten,Rainer, xvii/19, 1989.

5.cd5 Qd5

6.Nc3 (6.Bf6 gf6 7.Nc3 Qd7=) 6...Qd7=+ 7.d4 (7.a3 a5=+) 7...b6 8.Nf3 (8.b5!?=) 8...Bb4=+ 9.Bd3 (9.Ne5 Qd6=+) 9...Bc3 (9...Bd3 10.Qd3 Nc6 11.0–0–/+) 10.Bc3 Bd3 11.Qd3 Nd5 (11...0–0 12.e4–/+) 12.0–0 Nc3 13.Qc3 0–0 14.Ne5 Qd5 (14...Qe7=+) 15.e4 (15.Qc7 f6 16.Nd3 Na6=) 15...Qd6 (15...Qe4!? 16.Rfe1 Qd5–/+) 16.Rac1=+ Na6 (16...f6 17.Nc4 Qf4 18.Rfe1=+) 17.Nc6 (17.Qc4 Nc5 18.Nf7 Rf7 19.dc5 Qc6=) 17...h6 18.f4 Rfc8 19.e5= Qd7 20.f5 ef5 21.Qc4 Nb8–/+ 22.Rf5?? Nc6–+ 23.Qc6 Qf5 0–1. gtate (1920) – laxstar (1955), net–chess.com, 2004.

6.Nc3 Qd8 7.h3 h6 7...Bb4 8.Qa4 Nc6 9.Bb5=+) 8.g4 (8.a3 c6=) 8...Bh7 9.g5 (better 9.a3!?=) 9...hg5–/+ 10.h4 (10.a3!?–/+) 10...gh4–+ (10...Bb4?! 11.hg5 Nd5 12.Ne4=) 11.Rh4 Bc2! 12.Qc2 (better 12.Rh8 Bd1 13.Rd1–+) 12...Rh4 13.0–0–0 (13.a3 Rh1 14.Nge2 a5–+) 13...Nc6 (13...Rb4!? 14.d4–+) 14.Bb5 Bb4 15.Ne4 (15.Qa4 Nd7 16.Nf3–+) 15...Ne4 (15...Re4?! 16.Bc6 bc6 17.Qc6 Kf8 18.Bf6–+) 16.Nf3 Rh8 (better 16...Nf2 17.Nh4 Qh4 18.Bc6 bc6 19.Qc6 Ke7 20.Qc7 Kf8 21.Rg1 Nd3 22.Kb1 Nb2 23.Qb7–+) 17.Qe4 (17.Bc6 bc6 18.Qc6 Ke7 19.Qe4 Qd6 20.Bg7 Qc5 21.Kb1 Rhb8 22.Qh4 Ke8–+) 17...Qd6 18.Bg7 Rg8 19.Be5 (19.Rg1 0–0–0 20.d4 f5–+) 19...Qc5 20.Bc4 (20.Qc4 Qc4 21.Bc4 Ne5 22.Ne5 Rg2–+) 20...0–0–0 (20...b5 21.Nd4 Qc4 (21...bc4?! 22.Qc6 Qc6 23.Nc6–+; 21...Ne5?! 22.Qa8 Ke7 23.Qg8=; 21...Qe5?! 22.Qc6 Ke7 23.Qa8 Qd4 24.ed4 Ra8 25.Bb5–+) 22.Kb1 Nd4 23.Qa8 Kd7–+) 21.Ng5 (21.Kb1 Bd2! 22.Bb2–+) 21...Ba3 (better 21...Ne5 22.Ne6 Bd2 23.Kc2 fe6 24.Rb1 Qc4 25.Qc4 Nc4 26.Rh1–+) 22.Bb2 Nb4 (22...Rg5!? 23.Qc2–+) 23.d3?? (better 23.Ba3 Na2 24.Kb2 Qg5 25.d4–/+) 23...Na2–+ 24.Kb1 (24.Kc2 Rg5 25.Bd4 Nb4 26.Kb3 Qd6–+) 24...Bb2 (better 24...Qb6 25.Qe5 Bb2 26.Qb2 Nc3 27.Kc2 Qb2 28.Kb2 Nd1 29.Kc1 Ne3 30.fe3 Rg5–+) 25.Kb2 Nb4 (better 25...Rg5 26.Ba2 Qb6 27.Bb3 Rh8–+) 26.Ra1 (26.Nf7 Rde8 27.Ne5 Qb6–+) 26...a6 (better 26...Rg5 27.Rd1 Nd5–+) 27.Qb7?? (27.Nf7 Rde8 28.Ne5–+) 27...Kb7 28.Ra6 Na6 0–1. Agiant – rexaf, lichess.org, 2019.

6.d4? Bb4 (6...Bb1 7.Qb1 Bb4 8.Kd1–/+) 7.Nd2 (7.Bc3 Be7–/+) 7...Ne4–+ 8.Ngf3 Bg4 9.Bc4?? (better 9.Bc1–+) 9...Qc4 10.Qa4 (10.Bc1–+) 10...Nc6 (better 10...b5 11.Qb3 Nd2 12.Qc4 Nc4 13.Ke2 Nb2–+) 11.Rc1 (11.Bc3 Nd2 12.Bb4 Nf3 13.gf3 Bf3 14.Kd2 Bh1 15.Rh1–+) 11...Bd2 12.Kd1 Qa4 (12...Qd3 13.Qc6 bc6 14.Rc6 Nf2) 13.Ke2 Bc1 (13...Qb5 14.Rc4 Qc4 15.Kd1 Qd3 16.Rf1 Nb4 17.d5 Qf1) 14.Bc1 (14.Rc1 Qb5 15.Ke1 Qb2 16.Rc2 Qc2 17.a3 Qf2 18.Kd1 Qd2) 14...Qc2 15.Bd2 Qd2 16.Kf1 Qd1 (16...Qf2) 17.Ne1 Nd2 18.Kg1 Qe1 0–1. Agiant (1615) – macaronh (1615), lichess.org, 2019.

5.Nf3

5.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4).

5.Nf3 dc4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4).

5.Nf3 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

5.Nf3 Nbd7 6.b5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 Nbd7 6.c4).

5.a3 a5

6.Qa4 Nbd7 7.ba5 c6 8.Qb3 dc4 (worse is 8...Ra5 9.Qb7 dc4 10.Qc6=) 9.Bc4 Nc5 10.Qb6 Qb6 11.ab6 Bd3 12.Ba2 Nfd7 13.Nf3 Bb5 14.Kd1? (better is 14.Bd4–/+) 14...Nd3–+ (14...Nb6?! 15.Nc3 Nba4 16.Nb5 Nb2 17.Kc2 cb5 18.Kb2 Nd3 19.Kc2 Nf2 20.Rhf1–/+) 15.Kc2 Nf2 (15...Nb6?! 16.Nc3 Ba6 17.Nd1–+) 16.Rg1 Bd3 17.Kc1 Nb6 18.Ne5 Na4 19.g3 Nh3 20.Rg2?? (20.Re1 Nb2 21.Kb2–+) 20...Bf1 21.d3 Bg2 22.Nd2 (22.Bb3 f6 23.Ba4 Ra4–+) 22...Nb2 23.Kb2 Ba3 24.Kc3 Bd6 25.Nec4 Bc7 26.e4 Nf2 27.Rg1 Bh3 28.Bb3 Ba5 (better is 28...0–0–0 29.Ra1 Rd3 30.Kc2–+) 29.Na5 Ra5 30.Nc4 Ra7 31.Nd6 Ke7 32.Nc4 b5 33.Ne5 Kf6 34.Nf3 Rd8 35.Nd4 (35.e5 Ke7 36.Nd4 Ke8–+) 35...e5 (better is 35...Rad7 36.e5 Kg6 37.Nc2 Nd3 38.Nb4 Ne5 39.Bc2 Kf6 40.Na6–+) 36.Nc6 Rc7 37.Bd5 Rc6! 38.Bc6 Rc8 0–1. KlausMueller – Silidimi, playchess.de, 2002.

6.Qb3 ab4 7.ab4 Nc6 (7...Ra1 8.Ba1 dc4 9.Bc4–/+) 8.c5 Be7 9.Nf3 0–0 10.Nc3 b5 (10...Ra1!? 11.Ba1 d4=+) 11.d4 (11.Bb5 Ra1 12.Ba1 Na7+–) 11...Ra1+= 12.Ba1 Be4 (12...Qa8 13.Bb2+=) 13.Bb5+– Bf3 14.gf3 Na7 15.Bd3 c6 16.Rg1 Qb8 17.Ke2 Qh2 18.Rf1 Rb8 19.Qa4 Qc7 20.Bb2 Nd7 21.Rh1 h6 22.Ra1 Nc8 23.Na2 (23.b5 cb5 24.Nb5 Qh2+=) 23...Bh4 24.Rh1 Bf6 25.Bc3 e5 26.b5 (26.Qa5 Qa7=) 26...cb5 (26...ed4!? 27.ed4 Qf4=+) 27.Bb5= ed4 28.Bd4?? (better 28.ed4 Nf8 29.Nb4 Qe7 30.Kd1=) 28...Nc5–+ 29.Bc5 Qc5 30.Bd3 Rb2 31.Kf1 Nb6?? (better 31...Be7 32.Rh5 Nb6–+) 32.Qe8+– Qf8 33.Qf8?? (better 33.Bh7! Kh7 34.Qf8 Ra2 35.Qf7+–) 33...Kf8–+ 34.Nc1 Ke7 35.Ne2 Rd2 36.Bb5 Nc4 37.Nf4 Rd1 38.Kg2 Rh1 39.Kh1 Nb6 40.Kg2 d4 (40...g6 41.Nd3–+) 41.Bd3 g5 42.Nh5 Be5 43.Ng3 Ke6 (43...Bg3 44.Kg3 de3 45.fe3–+) 44.Nh5 (44.ed4!? Bg3 45.fg3–/+) 44...Nd5 45.ed4 Bd4 46.Ng3?? (better 46.f4–+) 46…Nf4 (46...Nf4 47.Kh2 Nd3–+) 0–1. moss42 (1985) – KaiserCapa (1950), ChessWorld.net, 2015.

6.b5 dc4 7.Bc4 Bd6 8.Nf3 0–0 9.Be2 Nbd7 10.d3 Bg6 11.e4 Bh5 12.0–0 Re8 13.a4 e5 14.Nbd2 Nc5 15.g3 (15.Nc4 Bf3 16.Bf3 Re7+=) 15...Nfd7 16.Qc2 Ne6 17.Nc4 Will e5 fall? 17...Bf3 18.Bf3 Bc5 19.Bg4 (worse 19.Ne5 Ne5 20.Be5 Ng5 21.Bg7 Nf3 22.Kg2 Kg7 23.Kf3 Bd4–+; worse 19.Be5 Ne5 20.Ne5 Qf6–+) 19...Nd4 20.Qd1 Nf6 21.Bh3 c6 22.Kh1 cb5 23.ab5 Nb5 24.Ne5 Nd4 25.f4 Re7 26.Nf3 Nf3 (26...b5!?=) 27.Bf6+= (worse 27.Rf3 Bd4 28.Qd2 a4=+) 27...gf6 28.Qf3 Bd4 29.Qg4 Kh8 ½–½. alekhinebattery (2300) – marekt (2155), gameknot.com, 2020.

6.b5 Bd6 7.Nf3 0–0 8.Be2 (8.d4 Nbd7=+) 8...Nbd7 (8...dc4 9.Bc4 Nbd7 10.Nc3=+) 9.d4 dc4 (9...Ne4 10.Nbd2=+) 10.Bc4 (10.Nbd2 c3 11.Bc3 h6=+) 10...Qe7 (10...Nb6 11.Be2=+) 11.0–0 (11.Nc3 e5=+) 11...Ne4 (11...Nb6 12.Nbd2=+) 12.Nbd2 (12.Bd3 Ndf6=+) 12...Rfd8 (12...Nb6 13.Be2=+) 13.Ne4= Be4 14.Bd3 Nf6 15.Be4 Ne4 16.Qc2 f5 17.Rfd1 (17.Nd2 Nd2 18.Qd2 e5=) 17...a4 (17...Rac8 18.Qa4=+) 18.Qc4 (18.Ne5 Ra5=+) 18...Kh8 (18...Qd7 19.Rab1=) 19.Qe2 (19.d5 e5=) 19...h6 (19...Nf6 20.g3=) 20.Nd2 (20.Ne5 Be5 21.de5 Nc5=) 20...Qe8 (20...Qd7=) 21.h3 (21.Rab1!?=) 21...Nd2=+ 22.Rd2 Ra5 23.Qc4 (23.b6 cb6 24.Rc2 Rb5=+) 23...Rb5 24.Qa4 Ra8 (24...Qc6 25.Rc1 Qd5 26.f3=+) 25.Qc2 Rba5 (25...Qd7 26.e4=+) 26.Rd3 (26.d5 Rc5 27.Qd1 e5=+) 26...Qa4 (26...Kg8 27.Rb3 b6 28.Qd3=+) 27.Qa4 Ra4 28.Rb3 b6 29.Rc3 (29.Rc1 Kg8=+) 29...Kg8 (29...R8a5 30.Rb3=+) 30.Kf1 (30.f3 Kf7=+) 30...Kf7 (30...e5 31.Rc2 ed4 32.ed4=+) 31.Ke2 (31.Rac1 R8a5=+) 31...Ke8 (31...g5 32.f3=+) 32.g4 Kf7 (32...g6 33.f3=+) 33.f4 (33.gf5 ef5 34.Rac1 Re8=+) 33...g6 (33...R4a5 34.Rf1=+) 34.gf5 (34.Rac1 R8a7=+) 34...gf5 (34...ef5 35.Rac1=+) 35.Rg1 (35.Rac1 R4a5=+) 35...Rg8 36.Rg8 Kg8 37.Kf3 Kf7 38.Kg3 (38.Rc2 b5=+) 38...Ra8 39.Kf3 h5 (39...Ke7 40.e4 Kd7 41.Re3=+) 40.Rc2 (40.e4 fe4 41.Ke4 Ra5=+) 40...Rg8 (40...h4 41.Bc1=+) 41.Rg2 Rg2 42.Kg2 b5 (42...c6 43.Kf3=+) 43.Kf2 (43.Kf3 Be7=+) 43...Ke8 44.Ke2 Kd7 45.Kd3 Kc6 46.Kc3 (46.Bc1 Kb7=+) 46...Kd5 47.Kd3 Be7 48.Bc1 Bf6 (48...Bf8 49.Bb2=+) 49.Bd2 Be7 50.Bc1 c6 (50...Bf8 51.Bb2=+) 51.Bb2 Bh4 (51...Bf8 52.Bc1=+) 52.Bc3 Be7 53.Bb2 Bd8 (53...Bd6 54.Bc1=+) 54.Bc3= Be7 (54...c5 55.dc5 Kc5 56.Bb4 Kd5 57.Bf8=) 55.Bb2=+ Bf8 (55...Bd6 56.Bc1=+) 56.Bc1 Bg7 (56...Bd6 57.Bb2=+) 57.Bd2 Bf8 58.Bc1 Be7 (58...Bd6 59.Bb2=+) 59.Bb2 Bf6 (59...Bd6 60.Bc1=+) 60.Bc1 (60.Bc3 c5 61.dc5 Be7=) 60...Be7 (60...Bh4 61.Bb2=) 61.Bb2 Bf6 62.Bc1 ½–½. Svensek,Marjan (2000) – Titan,Matej (2245), Drzavna Clanska Liga za Leto, 2016.

6.b5 Be7 7.cd5 Qd5 8.Nc3 Qd6 9.d4 Nbd7 10.Qf3 0–0–0 11.Qd1 e5 12.Nf3 Kb8 13.Be2 Ne4 14.0–0 Ng5 15.Rc1 (15.Ng5 Bg5 16.de5 Qg6+/–) 15...h6 16.Kh1 Nf3 17.Bf3 Nb6 18.Na4 Qg6 19.Bh5 Qe6 20.Bf3 e4 21.Be2 h5 22.Bc3 Na4 23.Qa4 Bd6 (23...Qa2 24.Ba5 Rd7 25.Bc7 Rc7+–) 24.Ba5+– Qd7 25.Bb4 Bg4 26.Bd6 Qd6 27.Rc6! Qd7 (27...bc6 28.Qc2 Double attack (28.Qc2 Decoy)) 28.Re1 Rh6 (28...bc6 29.bc6 Qc6 30.Qc6 Be2 31.Rb1 Kc8 32.Rc1 Kb8 33.Qc7 Ka8 34.Rb1 Rd7 35.Qc6 Ka7 36.Qd7 Ka6 37.Qa4) 29.Rh6 gh6 30.Bf1 h4 31.h3 Be6 32.Rc1 f5 33.Qc2 Qf7 34.a4 Bd5 35.a5 b6 36.Qc3 f4 37.ef4 Qf4 38.a6 Qf7 39.Kg1 Rg8 40.Rc2 h5 41.Qa3 Bb3 42.Rc3 Bd5 43.Qc1 Rg7 44.Qh6 Rg8 45.Qc1 Rg7 46.Ra3 Ka7 47.Rc3?? Kb8= ½–½. Wantoch_Rekowski,Jacek (2220) – Smit,Frans P (2060), corr WS/M/239 ICCF, 2009.

6.cd5 ed5 7.b5 Nbd7 8.Nf3 Bd6 9.Be2 0–0 10.Nc3 Nc5 11.0–0 Re8 12.Na4 Na4 13.Qa4 Bd7 14.Qc2 Qe7 15.a4 Ne4 16.d3 Nc5 17.Rfc1 Rac8 18.Bc3 c6 19.Ba5 cb5 20.ab5 d4 21.Nd4 Ne4 22.de4 Rc2 Eliminates the defender c2 23.Rc2 Qe4 24.g3 (24.Bc7 Qe5 25.Bd6 Qd6+–) 24...Be5 25.Rc4 h5 26.Rac1 Qg6 27.Bc7 Bg4 28.Bf1 Bd4 29.Rd4 Qf6 30.Ba5 Ra8 31.Be1 Rd8 32.Rdc4 Qd6 33.Ba5 Rd7 34.h3 Bf3 35.Rd4 (35.Rf4!? Qd5 36.Bb6+=) 35...Qe6= 36.Rf4 Qa2 37.Be1 Qb2 (37...Be2!? 38.Bg2 Rd8= (38...Bb5?? 39.Rc8 Kh7 40.Be4 f5 41.Rf5+–)) 38.Rc8+– Kh7 39.Rf3 Qb1 40.Rf4 (40.Bc3 Rd1 41.Rf7 Rf1 42.Kg2 Rg1 43.Kf3 Rg3 44.fg3 Qf1 45.Ke4 Qf7 46.Be5=) 40...Qe1= 41.Rd4 Rd4 42.ed4 The passed pawn on d4 will become decisive later 42...Qa5 (42...h4 43.gh4 Qe4 44.Rb8=) 43.Re8 Qc7 44.Bg2 g5 (44...Qc1 45.Kh2 Qb2 46.Be4 g6 47.Bb7 Qf2 48.Bg2 Qd4 49.Re2–/+) 45.Be4+= Kg7 46.Re5 f6 47.Re6 h4 48.gh4 gh4 49.Kg2 Kf7 50.Bd5 Kg6 51.Re4 f5 52.Re6 (52.Rh4?? Qd8 53.Bf7 Kf7–+) 52...Kg7 53.Bf3 Kh7 54.d5 Qg7 55.Kf1 Qd7 56.b6 Kg7 57.Kg2 Qf7 58.Kf1 Kg8 59.Rh6 Qe7 60.Re6 Threatening mate... how? 60...Qd8 61.Rg6 Kh7 62.Re6 Kg7 63.Ke2 Qc8 64.Kf1 Kf8 65.Kg2 Qc3 66.Re3 Qg7 67.Kf1 Qa1 68.Kg2 Qf6 69.Re6 Threatening mate: Rxf6 69...Qg7 70.Kh2 Qc3 71.Kg2 Qh8 ½–½. marekt – pcmvr, net–chess.com, 2020.

6.b5 c6

7.a4 Be7 8.Nf3= 0–0 9.Nc3 Ne4 10.Be2 Bf6 11.Qc1 (11.cd5 cd5 12.Nd4 Nd7=) 11...Nc3 (11...Nc5!? 12.Ra3 Bd3 13.cd5 cd5–/+) 12.Bc3= Nd7 13.Nd4 (better 13.bc6 bc6 14.0–0=) 13...Bg6 (better 13...Bd4 14.Bd4 cb5 15.cb5 e5=+) 14.bc6+– bc6 15.Nc6 Qc7 16.Nd4 (better 16.cd5!? Be4 17.de6 Bg2 18.ed7 Bh1 19.Bf6 Qc6 20.Qc6 Bc6 21.d8R Rfd8 22.Bd8 Rd8 23.Bd1+–) 16...dc4= 17.Nb5 Qc6 18.Bf3 (18.0–0 e5+=) 18...Be4= 19.Be4 Qe4 20.0–0 Ne5 21.Rb1 Nd3 22.Qa3 Bh4 (22...Bc3 23.Nc3 Qc6=) 23.Qd6 (23.f3 Qb7=) 23...Qf5 f2 becomes the focus of attention (better 23...Bf2!? 24.Kh1 Bh4=+) 24.g3 Bg5 (24...Bf6 25.Bf6 Qf6 26.f4+=) 25.Qd4 Bf6 26.Qc4 Bc3 27.Nc3 (better 27.Qc3 Nf2 28.Nd4 Nh3 29.Kg2+–) 27...Nf2?? (better 27...Rac8 28.Qb5 Ne5+–) 28.Rf2+– Qg6 29.Rb5 Rfd8 (29...h6 30.Rc5+–) 30.Qf4 (30.Qc7 f6+–) 30...f5 (30...f6 31.Qc4 Qe8 32.Rb6+–) 31.Rb6 h6 (31...Qf6 32.Qc4 Re8 33.Ne4+–) 32.Qe5 Re8 33.Nb5 Rac8 (33...Re7 34.Nd4 Qf7 35.e4+–) 34.Nd6 Rc1 35.Kg2 Re7 (35...Rf8 36.Qa5 Ra1 37.Qa7+–) 36.Rb8 (better 36.Nf5 ef5 37.Rb8 Kh7 38.Qe7 Rd1+–) 36...Kh7 37.Rb6 Ra1?? (37...Kg8 38.Nf5 ef5 39.Rb8 Kh7 40.Qe7 Rc2+–) 38.Nc8 (better 38.Qa1 Qf6 39.Qf6 gf6+–) 38...Re8 39.Nd6 Re7 40.Nc8 (40.Qa1!? Qg5 41.Qe5 Qf6 42.Qa5 Qf8+–) 40...Rf7?? (40...Re8 41.Qa1 Rc8+–) 41.Re6 (better 41.Qa1 Rf8 42.Nd6 h5+–) 41...Qg5 (41...Rf6 42.Rb6 Rb6 43.Nb6+– (43.Qa1?! Qc6 44.Rf3 Qc8+–)) 42.Nd6 (42.Qa1 f4 43.Qb1 Qf5 44.Qf5 Rf5 45.Rf4 Rg5 46.Ne7 Rd5 47.Nd5 Kh8 48.Re8 Kh7 49.Ne7 h5 50.Rg8 Kh6 51.Rh8 Kg5 52.h4) 42...Rf6 43.Rf5 Rf5 (43...Re6 44.Qe6 Qg4 45.Qd5+–) 44.Qf5 (44.Nf5 Rd1 45.Re7 Rd2 46.Kg1 Rd1 47.Kf2 Rd2 48.Ke1 Rd1 49.Kd1 Qg4 50.Ke1 Qb4 51.Kf1 Qc4 52.Kg1 Qc1 53.Kg2 Qc2 54.Kh3 Qh2 55.Kh2 Kg6 56.g4 h5 57.Rg7) 44...Qf5 45.Nf5 Ra4 46.Ra6 Ra2 47.Kf3 Rd2 48.h3 Ra2 49.Nd4 (better 49.e4!? Rc2+–) 49...a4 50.Nb5 (50.e4 h5+–) 50...Rh2 (50...Ra1 51.e4+–) 51.Kg4 (better 51.h4!? Ra2+–) 51…Re2 0–1. Fettito – dodo339600, lichess.org, 2019.

7.Nf3 Bd6 8.Be2 0–0 9.Nc3 Nbd7 10.Nd4 Bg6 11.f4 c5 12.Nf3 d4 13.ed4 cd4 14.Nd4 Bf4 15.0–0 Qc7 16.Nf3 Ng4 17.h3 Qb6 18.d4 Ne3 19.Qd2 Ng2! (19...Nf1 20.Qf4 Nd2 21.Qd2+–) 20.Qd1? (20.Kg2 Bd2 Discovered attack) 20...Ne3 21.Qd2 Qc7 (21...Nf1 22.Qf4 Nh2 23.Kh2+/– (23.Nh2?! e5 24.c5 Qc5 25.dc5 ef4+=)) 22.Ne5 Ne5 23.Rf4 (23.de5 Qe5 (23...Nf1?! 24.Qf4 Nd2 25.Qd2+=) 24.Rf2 Bg5–+) 23...N5c4 24.Bc4 Nc4 25.b6 Qb6 26.Na4 Qb5 27.d5 Nd2 0–1. combijack (1745) – jimjimmo (1690), gameknot.com, 2010.

6.b5 Nbd7

7.d4 dc4 8.Bc4 Nb6 9.Be2 Be7 (9...Bd6 10.Nf3=+) 10.Nf3 0–0 11.0–0 Be4 (11...Ne4!?=) 12.Nbd2+= Bd5 (12...Bf5!?+=) 13.Qc2 a4 (13...Bf3 14.Bf3 (14.gf3?! Rc8=) 14...Nfd5 15.e4+–) 14.Rfc1 (14.e4 Bb3 15.Qd3 Rc8+–) 14...Bd6 (14...c5 15.dc5 Rc8 16.e4 Bc5 17.Qd3+–) 15.e4+– Bb3 16.Nb3 (16.Qd3 Nh5 17.g3+– (17.Nb3?! Nf4 18.Qe3 ab3+=)) 16...ab3+= 17.Qb1 Bf4 (17...Be7 18.Rc3 Na4 19.Rb3 Nb2 20.Rb2 Ra3 21.Rba2 Ra2 22.Ra2+–) 18.Rd1 (18.Rc3!?+–) 18...Na4 19.g3 Bh6 20.Ne5 (20.e5 Nh5+=) 20...Nd7 (20...g6 21.f3=) 21.f3 (better 21.Bc4!?+=) 21...Ne5 (worse 21...Nb2 22.Qb2 Ne5 23.de5+=) 22.de5 Be3 23.Kg2 (23.Kh1 Qe7 24.Bc4 Qc5 25.Bb3 Qb5=+) 23...Qg5–/+ 24.Bc4 (24.Rd3 Rfd8 A) 25.Rb3? Rd2 26.Kf1 Rad8–+ (26...Nb2?! 27.Rb2 Rd7 28.f4=+); B) 25.h4–/+) 24...Nc5 (better 24...Rad8 25.h4 Qe7 26.Bb3 Rd1 27.Bd1 Nb2 28.Qb2 Rd8=) 25.Bd4?? (better 25.Bc3=+) 25...Bd4–+ 26.Rd4 Qe3 (26...Qe5 27.Qd1 g5 28.Qd2–+) 27.Qb2 (27.Qd1 h6 28.Rd2 Rfe8–/+) 27...Rfd8 28.Rad1 Rd4 29.Qd4? (better 29.Rd4 g5 30.b6 cb6 31.Bb5–+) 29...Qd4 30.Rd4 b2 (30...g6 31.Bb3 Nb3 32.Rd7 Ra3 33.Rc7–+) 31.Ba2 h5 (31...g5!? 32.Rd2 Ra3 33.Rb2–+) 32.Rd2 Ra3 33.Rb2 b6?? (better 33...Nd3 34.Rd2 Ne1 (34...Ne5?! 35.f4 Nd3 36.Bc4=+) 35.Kf2 Nf3 36.Rd8 Kh7–+) 34.Kf2?? (better 34.Bc4=) 34...Nd3–+ 35.Ke2 Nb2 36.Bb1 Nc4 37.Bd3 (37.f4 Re3 38.Kd1 g5–+) 37...Ra2 (better 37...Ne5 38.Bb1 Nf3 39.h4–+) 38.Kf1 (38.Ke1 Ne5 39.Be2 g5–+) 38...Ne3 39.Ke1 Rh2 40.Be2 (40.f4 Ng2 41.Kd1 h4 42.gh4 Nf4–+) 40...h4 (better 40...Nc2!? 41.Kd1–+) 41.gh4 Rh4 (better 41...Nc2!? 42.Kd1 Nd4 43.Bc4 Nf3 44.Bf1–+) 42.Kf2 (42.Kd2 Ng2–+) 42...Nc2 43.Kg3 (43.Bf1 Kf8–+) 43...Rh6 (43...Rh1 44.Bd3 Nd4 45.Kf2–+) 44.Bd3 Nb4 (44...Nd4 45.Bf1–+) 45.Bc4 (45.Bf1 Kf8–+) 45...Rg6 46.Kf2 Kf8 47.f4 (47.Be2 Nc2–+) 47...Rh6 48.Kg3 (48.Bf1 Nc2–+) 48...Rh1 49.f5 (49.Be2 Rc1–+) 49...ef5 50.ef5 Rc1 51.Bb3 (51.Be2 Rc5 52.e6 fe6 53.fe6 Ke7–+) 51...Nd3 (better 51...Rc3 52.Kf4 Rb3 53.Ke4–+) 52.e6 Rc3 53.Bd5 Nb4 54.Kf4 (54.Bf3–+) 54...Nd5 55.Ke5 Rc5 56.ef7 Nf6 57.Ke6 Rb5 (57...Rc4 58.Ke5 Re4) ½–½. Bendega (2040) – ALitvintsev (1975), lichess.org, 2021.

7.Nf3 Bd6 8.Nc3 0–0 9.d4 c5 10.Bd3 (10.dc5 Nc5 11.cd5 ed5 12.Nd5 Nd5 13.Qd5 Nd3 14.Ke2 Qc7=+) 10...cd4 (10...Bd3 11.Qd3 cd4 12.Qd4–/+ (12.Nd4? Ne5 13.Qc2 Nc4–+)) 11.ed4 (11.Nd5!? de3 12.fe3 Nd5 13.cd5=) 11...Bd3–/+ 12.Qd3 e5 (12...dc4 13.Qc4 Rc8 14.Qe2=+) 13.de5 (13.cd5 e4 14.Ne4 Re8–/+) 13...Ne5=+ 14.Ne5 Be5 15.cd5 Bc3 16.Bc3 Re8 17.Kd2?? (better 17.Kf1 Nd5 18.Kg1–/+) 17…Ne4–+ (17...Ne4 18.Kc2 Rc8–+ (18...Nf2?! 19.Qf3 Nh1 20.Rh1–+; 18...Nc3 19.Kc3 Qf6 20.Kc2 Qf2 21.Kd1 Qg2 22.Rf1–+); 17...Nd5?! 18.Bb2 Qg5 19.Kc2–+) 0–1. workchess – pcmvr, net–chess.com, 2020.

6.cd5 ab4

7.ab4 Ra1–/+ 8.Ba1 Nd5 (8...Qd5?! 9.Bf6 gf6 10.Nc3=) 9.b5 (9.Bc3–/+) 9...Qd6 (better 9...Nb4!? 10.Na3 Nd3 11.Bd3 Qd3–+ (11...Bd3?! 12.Qb3–/+)) 10.Nf3 (10.Nc3 Nd7=+) 10...Qb4 (10...Nb4!? 11.Be5 Qb6=+) 11.Nc3= Be7 (better 11...Nf6!?=) 12.Nd5+– ed5 13.Bg7 Rg8 14.Bc3 Qd6 15.g3 (15.Qa4 Qd7+–) 15...Bf6 16.Nd4 Be4 (16...Bg6 17.Bh3+–) 17.f3 Bg6 18.Bg2 (18.Qa1 Bd8+–) 18...c5 19.Ne2 (19.bc6 bc6 20.Qa1 Be7+–) 19...d4+= 20.ed4 Bd4 (20...cd4 21.Bb2+=) 21.Bd4 cd4 22.0–0 Nd7 (22...Kd8 23.Qa4 d3 24.Nc3+–) 23.Re1 (23.Qa1 d3 24.Nd4 Kf8+–) 23...Kd8 24.Qa1 d3 (better 24...Re8!?+–) 25.Qa8 Nb8 26.Nf4 Re8 (26...b6 27.Qd5 (27.Ng6?! hg6 28.Bf1 Re8 29.Re8 Ke8+–) 27...Qd5 28.Nd5+–) 27.Re8 Ke8 28.Qb7 (28.Qb7 Qc5 29.Kf1 Qc1 30.Kf2 Qc5 31.Ke1 Qc1 32.Kf2 Qc5 33.Kf1 Qc1 34.Kf2=; 28.Ng6?! Qc5 29.Kf1 Qc1 30.Kf2 Qc5 31.Ke1 Qc1 32.Kf2 Qc5 33.Kf1 Qc1 34.Kf2=) 1–0. GuestJXBM – GuestXTQJ, freechess.org, 2017.

7.Bb5 c6 8.dc6 bc6 9.Bc4 –/+.

7.Bb5 c6 8.dc6 bc6 9.Be2 –/+.

7.de6 fe6 8.ab4 Ra1 9.Ba1 Nc6 =.

5.a3 dc4

6.Qa4 Nc6 7.Bc4 =+.

6.Bc4 a5 7.b5 =.

6.Bc4 Bd3

7.Qb3 Bc4 8.Qc4 Nbd7 9.Nf3 Be7 10.0–0 0–0 11.Nc3 Nb6 12.Qb3 a5 13.b5 a4 14.Qc2 Bd6 (14...Nc4 15.Rfb1=) 15.Ne4 (15.e4 Ng4+=) 15...Ne4= 16.Qe4 Nd5 17.Qc4 Qe7 18.e4 Nb6 19.Qc3 f6 20.e5 fe5 21.Ne5 Rf5 22.Rae1 Nd5 23.Qd3 Raf8 24.g3 (24.Re4 Nf4 25.Qf3 Qh4=+) 24...Bc5–/+ 25.Re2 Qe8 (better is 25...Rd8!? 26.Qe4 Ba3 27.Ba3 Qa3–/+) 26.Qc4= Bb6 (26...Qh5 27.g4 Rg5 28.Re4=) 27.d4 Qh5 28.Re4?? (better is 28.h4+=) 28...Rf2!–+ 29.Rf2 Rf2 30.Kf2 Qh2 31.Kf3? (31.Ke1 Qh1 32.Qf1 Qe4 33.Kd2 Ba5 34.Kc1–+) 31...Qh1 (31...Qb2 32.Qa4 Qc3 33.Kg2 Qd2 34.Kh3+=) 32.Kf2 Qe4 33.Qa4 (33.Nf3 Qe3 34.Kg2 Qa3 35.Qe2–+ (35.Ba3?? Ne3 36.Kf2 Nc4–+)) 33…Qe5 (34.Qb3 Bd4 35.Bd4 Qd4 36.Kf3 Kf7–+) 0–1. Bakker,Piet – Van Scheltinga,Theo, Amsterdam, 1968.

7.Qb3 Be4 8.Nf3 Bd5 9.Nc3 Bc4 10.Qc4 c6 11.Ne4 Be7 12.h4 b5 13.Qc2 0–0 14.Neg5 Nd5?? (better is 14...Nbd7+=) 15.Qh7 1–0. combijack (1745) – chess_knot (1710), gameknot.com, 2010.

7.Bd3 Qd3 8.Bf6 gf6 9.Qe2 Qe2 10.Ne2 =.

7.Nf3?? Bc4–+ (8.Bd4 Nc6–+) 0–1. Franek – Kirylo, corr 1. AMM Poland, 1991.

5.a3 c5

6.b5 a6 7.a4 ab5 8.cb5 Qa5 9.Nf3 c4 10.Bc3 Qc7 (10...Bb4 11.Bb4 Qb4 12.Nc3–/+) 11.Be2 Nbd7 12.0–0 Nc5 13.d3?? (13.a5!?=+) 13...Bd3 (better is 13...cd3 14.Be5 de2 15.Qe2 Qe7–+) 14.Bd3 Nd3 15.Nd4 (15.Ne1 Ne1 16.Re1 Bd6–+) 15...Be7 16.Nd2 Ng4?? (16...0–0 17.N4f3–+) 17.N2f3?? (better is 17.Qg4 Qe5 18.a5+–) 17...Nge5 18.Ne5 Qe5 19.a5 0–0 20.b6 Bf6 21.Qc2 Qg5 22.Nf3 Qg6 23.Bf6 Qf6 24.Nd4 h6 25.a6 (25.Nb5–+) 25...ba6 26.b7 Rab8 27.Rfb1 Qe7?? (27...e5 28.Nf3–+) 28.Ra6? (better is 28.Nc6 Qc7 29.Nb8 Rb8 30.Ra6 Rb7 31.Raa1–/+) 28...Rb7–+ 29.Nc6 (29.Rbb6 Rb6 30.Rb6 Qc7–+) 29...Qc7 30.Rb7 (30.Nd4–+) 30...Qb7 (31.Qa2 Nc5 32.Ne7 Qe7–+) 0–1. maxum – whateve, Live Game Caissa's Web, 2004.

6.b5 Be7 7.Nf3 =+.

6.b5 Nbd7

7.d3 Bd6 8.Be2 Qe7?? (better 8...dc4 9.dc4 Qc7=+) 9.g4+– Bg6 10.g5 Ng8 11.Bg7 Qg5?? (better 11...Be5 12.Bh8 Bh8+–) 12.Bh8 (12.Nf3 Qe7 13.cd5 Ngf6 14.Bh8 ed5+–) 12...f6 (12...dc4 13.dc4 Qe7 14.Bc3+–) 13.h4 (13.Nf3 Qf5+–) 13...Qe5 (13...Qh6 14.cd5 ed5 15.h5+–) 14.Nd2 (14.d4 cd4 15.Nf3 Qf5 16.Nd4 Qe4+–) 14...Nh6 (14...Qc3 15.Qc1 Be5 16.Qc3 Bc3 17.0–0–0+–) 15.Bg7 (better 15.d4!? Qf5 16.cd5 cd4+–) 15...Nf5 16.f4 (better 16.h5 Bf7 17.Ngf3+–) 16...Qe3 Do you see the mate threat? 17.Nf1 Qf4 18.Qd2?? (better 18.h5 Ng7 19.hg6 hg6 20.Nf3+–) 18...Ng7–/+ 19.Qf4 Bf4 20.Nh3 (20.h5!? Bf7 21.Rb1–/+) 20...Be5–+ 21.Ra2 dc4 22.dc4 Bb1 23.Rd2 Bc3 24.Bf3 (24.Rg1 Nf5–+) 24...Rb8 (24...Bd2?! 25.Nd2 Ne5 26.Bb7–/+) 25.Ke2 (25.Rg1 Bg6–+) 25...Bd2 26.Nd2 Bg6 27.Nf4 Ne5 (27...e5 28.Nd5–+) 28.Ng6 (28.h5 Bf7–+ (28...Nf3 29.hg6 Nd4 30.Kf2+=)) 28...hg6 29.Bg2 (29.Be4 Nh5 30.Rg1 Kf7–+) 29...b6 30.Bh3 (30.Be4 f5 31.Nf3 Nc4 (31...fe4?! 32.Ne5 Nf5 33.Rg1–/+) 32.Bc6 Ke7–+) 30...Ke7 31.Kf2 (31.Bf1 Rh8–+) 31...Rd8 32.Ke2 (32.Ke1–+) 32...Nh5 33.Ke1 (33.Rf1 Ng3 34.Ke1 Nf1 35.Bf1 Rh8–+) 33...Nf4 (better 33...Nd3 34.Kf1 Ng3 35.Kg1 Nh1–+) 34.Bf1 Ned3 35.Bd3 Rd3 36.Nb1 e5 37.Kf2 (37.a4 Rb3 38.Kd2 Rb4–+) 37...Ke6 (37...Rd4 38.Ke1–+) 38.a4 (38.Ke1 f5–+) 38...e4 (38...Rd4 39.Ke3–+) 39.Ke1 (39.Re1 Ke5–+) 39...e3 40.Rf1 Ke5 (40...Ke5 41.Rg1 Rb3–+) 0–1. petrobbo (2025) – hwntw (2220), ChessWorld.net, 2017.

7.Nf3 Nb6 (7...Bd6 8.cd5 ed5 9.Be2=+) 8.d3 (8.cd5 ed5 9.Be2 Bd6=+) 8...dc4 9.dc4 (9.e4 Bg6 10.Nc3 cd3 11.Bd3 c4–/+) 9...Qd1–/+ 10.Kd1 0–0–0 (10...Ng4 11.Ke1–/+) 11.Ke1=+ Bc2 (11...Bd6 12.Nbd2=+) 12.Nbd2 Be7 (12...Bd6 13.Rc1 Bf5 14.Nh4=) 13.Rc1 (better is 13.Ra2 Bf5 14.Ne5=) 13...Bd3?? (better is 13...Bf5=+) 14.Bd3+– Rd3 15.Ne5 Rhd8 16.Nd3 Rd3 17.Ke2 Rd7 18.Bf6 Bf6 19.Ne4 Bb2 20.Nc5 Rc7 21.Rc2 Ba3+/– 22.Ne4 Rc4 23.Nd6 Bd6+= 24.Rc4 Nc4 25.Rc1 Bh2 26.g3+– Bg1 27.Rc4 Kd7 28.Rc1 Bf2 29.Kf2 Kd6 30.Kf3 f6 31.Ra1 Kc7 32.Ra7 Kb6 33.Ra8 Kb5 34.Rg8 g6 35.Rg7 Kc5 36.Rb7 h5 37.Rf7 f5 38.Rf6 e5 39.Rg6 Kd5 40.Rg5 Ke6 41.Rh5 Kf6 42.e4 f4 43.gf4 ef4 44.Kf4 Kg6 45.Rg5 Kf6 46.e5 Ke6 47.Ke4 Ke7 48.Rf5 Ke6 49.Rf6 Ke7 50.Kd5 Kd7 51.Rf7 Ke8 52.e6+– Kd8 53.Kc6 Ke8 54.Kd6 Kd8 55.Rf8# 1–0. Kuipers,Stefan – Schenkeveld,Daniel, Hengelo op U12, 2001.

6.bc5 Bc5

7.d4 Bb6 8.Nc3 Nc6 9.cd5 ed5 10.Nf3 0–0 11.Bb5 Rc8 (11...Bc7 12.Rc1=) 12.0–0 (12.Rc1 Re8=) 12...Ne4 (12...Re8 13.Rc1=) 13.Ne4 (13.Rc1 Bg4=) 13...Be4 (13...de4 14.Bc6 bc6 15.Ne5=+) 14.Bc6 (14.Nd2 Qh4=) 14...Bf3 (14...Rc6!? 15.Rc1 Rc1 16.Bc1 Bc7=+) 15.Qf3= Rc6 16.Rfc1 Rf6 17.Qe2 Qd6 18.Rc2 Rh6 19.h3 (19.g3 Qe6=) 19...Bc7 20.f4 (20.Kf1 Qh2 21.Qf3 Rb6=) 20...Re8 21.Qf3 Bb6 22.Rac1 Rhe6 23.Rc8 h6 24.a4 Qd7 25.Re8 Re8 26.Ba3 Qa4–/+ 27.Bd6 Qa5 28.Bc5 Qd2–+ 29.Rd1 Qe3 30.Qe3 Re3 31.Kf2 Rb3–+ 32.Rc1 a5 33.h4 a4 34.g4?! a3 35.Ra1 Rb2 36.Kf3 Bc5 37.dc5 a2 38.Ke3 Kf8 39.Kd3 Ke7 40.Kc3 Rf2 41.f5 Kd7 42.Kb3 Kc6 43.Rc1 Rg2 44.g5 hg5 45.h5 Rh2 46.Rg1 Kc5 47.Rg5 a1Q 48.Rg7 Qb2 (49.Ka4 Qb4) 0–1. wlittle (2300) – towserone (2215), net–chess.com, 2003.

7.d4 Be7 8.Nf3 Nbd7 9.cd5 Qa5 10.Nc3 (10.Nbd2 Nd5 11.Qb3 0–0 12.Be2 N7b6 13.Rc1 Na4 14.Ba1 Rfc8 15.0–0=; 10.Bc3 Qd5 11.Nbd2 Nb6 12.Bb4 Bb4 13.ab4 0–0 14.Nb3 Rfc8 15.Nc5=; 10.Qd2 Qd5 11.Nc3 Qb3 12.d5 e5 13.Nb5 Rc8 14.Be5 Ne5 15.Ne5–+) 10...Nd5 11.Qd2 Rc8 12.e4 Nc3 13.ef5 Nf6 14.Bd3 ef5 15.Rc1 =.

7.d4 Be7 8.Nf3 Nbd7 9.cd5 ed5 10.Be2 (10.Qb3 0–0 11.Nbd2 Rc8 12.Be2 Bc2 13.Qa2 Qa5 14.0–0 Ne4 15.Nb3+=; 10.Bd3 Be4 11.0–0 Qb6 12.Bc3 0–0 13.Ra2 Rfc8 14.Qe2 Ng4 15.h3=; 10.Nc3 0–0 11.Bd3 Bd3 12.Qd3 Nb6 13.Ne5 Rc8 14.0–0 Nc4 15.Nc4=; 10.Nbd2 Qb6 11.Qb3 Qb3 12.Nb3 0–0 13.Bc3 Rfc8 14.Bb4 Bd8 15.Bb5=) 10...0–0 (10...Qb6 11.Bc3 0–0 12.0–0 Ne4 13.Nfd2 Rfc8 14.Ne4 Be4 15.Bg4+=) 11.Qb3 a6 (11...Rc8 12.Nc3 Qb6 13.Qb6 Nb6 14.Rc1 Rc7 15.Nb5+=) 12.0–0 (12.Qb7? Rb8 13.Qa6 Rb2–+; 12.Nbd2 Re8 13.0–0 b5 14.a4 b4 15.Rfc1=) 12...b5 (12...Re8 13.Rc1 b5 14.a4 b4 15.Nbd2=) 13.Nbd2 (13.a4 b4 14.a5 Qc7 15.Rc1=) 13...Nb6 14.Ne5 (14.Rfc1 Nc4 15.Bc3=) 14...Rc8 15.Rfc1 Nc4 16.Bc3 Nd7 17.Nd7 Qd7 18.Nf3 Qe6 19.Be1 Rb8 20.Bb4 Rfc8 21.Be7 Qe7 22.Qb4 Qe6 23.g3? (better is 23.a4+=) 23...Ne3!–+ 24.Ng5 (24.fe3 Qe3 Double attack (24...Rc1 Decoy)) 24...Qe8 (24...Qg6!? 25.fe3 Qg5–+) 25.Bh5–/+ g6 26.Re1 Qd8 27.Re3 Qg5 28.Bf3 Be6 29.Re5 Attacking the isolated pawn on d5 29...Rc1 30.Rc1 Qc1 31.Kg2 Rd8 32.Qe7 Qc8 33.h4 Qd7 34.Qf6 Rc8 35.h5 Rc6 36.Qh4 (36.Kg1!? Bf5 37.Qh4=) 36...f6!–/+ 37.Re3 (37.Qf6 Bh3 Double attack (37...Bh3 Decoy)) 37...g5 38.Qh1 Rc4 39.Qe1 Kf7 40.h6 (better is 40.Qd1!?–/+) 40...g4–+ (40...Rd4?! 41.Bh5 Ke7 42.Bg6+=) 41.Bd1 Rd4 42.Bc2 f5?? (42...Bf5 43.Qa1 Rc4–+ (43...Bc2?! 44.Qd4 Kg6 45.Kg1+=)) 43.Qc3+/– Rc4?? (better is 43...Re4 44.Qg7 Ke8 45.Qh8 Ke7 46.Be4 de4 47.Qh7 Kf6 48.Qd7 Bd7+–) 44.Qg7+– Ke8 45.Qg8 Ke7 46.Bf5 Re4 47.Qh7 Kd6 48.Qd7 Kd7 (48...Bd7?? 49.Be4 Bc6 50.h7 de4 51.h8Q+–) 49.Be4 de4 (49...Bg8 50.Bf5 Kd8 51.Bg4+–) 50.h7 1–0. Kamaletdinov,Farit (1950) – Shahnazarov,Valery, Astrakhan Reg. Championship Open, 2007.

7.d4 Be7 8.Nf3 Nbd7 9.cd5 Nd5 10.Nfd2 (10.Qb3 Rc8 11.Bc4 Qb6 12.Qb6 N5b6 13.Bb3 Bc2 14.Nbd2 Bb3 15.Nb3–/+; 10.Nc3 Qa5 11.Qd2 Rc8 12.e4 Nc3 13.ef5 Nf6 14.Bd3 Nfd5 15.fe6=; 10.Nbd2 Qb6 11.Nc4 Qa6 12.Qb3 0–0 13.Ncd2 Qa5 14.Be2 N7b6 15.Rc1=) 10...Qb6 11.Nc4 Qc7 12.Nbd2 b5 13.Ne5 Ne5 14.de5 Qa5 15.a4 +=.

7.cd5 ed5 8.Qb3 Bb6 =.

7.Nf3 0–0 8.Qb3 +=.

7.Nf3 Nbd7 8.Be2 (8.cd5 ed5 9.Nd4 Bg6=) 8...0–0 9.0–0 dc4 10.Bc4 Rc8 11.d4 Be7 12.Bb3 Qb6 13.Nc3 Bg4 14.Rb1 Bf3 15.gf3 Rfd8 16.f4 Ba3 17.Ba3 Rc3 18.Be7 Rdc8 19.Ba4 (19.f5!? Qa6 20.fe6 fe6 21.Bb4=) 19...Qc7–/+ 20.Bb4 Rc4 (20...Nd5–/+) 21.Qb3?? (better is 21.Bb5!?=) 21...Nd5 (21...a6 22.Qa3–+) 22.Be1 N7b6 23.Bb5 Rc2 24.Bd3 Rc1 (24...Rc6 25.Bb5 Rd6 26.Bb4 Nb4 27.Qb4–/+) 25.Bd2 (25.Rc1 Qc1 26.Bb4 Qc7+=) 25...Rf1 26.Kf1 g6 (26...Qd6 27.Ra1 a6 28.e4–/+) 27.Rc1+= Qd7 28.Ra1 a6 (better is 28...Ra8!?+=) 29.e4+= Nf4 (better is 29...Rc6!? 30.ed5 Qd5 31.Qd5 Nd5+=) 30.Bf4+/– Qd4 31.Rd1 (31.Ra3 Qd8+/–) 31...Rc3 (31...Qa4 32.Qb1 Nd5 33.Be5+/–) 32.Qb1 Nc4 (32...Qa4 33.Be5 Rc8 34.Kg1+/–) 33.Be2+– Qf6 34.Bc1 (better is 34.Qa1!? Qf4 35.Qc3+–) 34...Qh4+= 35.Kg1 (35.Qa1 Rc2 36.Bh6 Rb2+=) 35...b5= 36.Rd3 Rd3 37.Qd3 (37.Bd3 Qg4 38.Kh1 Qd1 39.Kg2 Ne5–+) 37...Qf6 38.Be3 (better is 38.Kg2!?=) 38...Ne3+= 39.Qe3 Qa1 40.Kg2 b4 41.Qb3 (41.Qa7 a5+=) 41...a5–/+ 42.Bb5 Qd4 43.Qc4 (43.Kf3!?–/+) 43...Qc4 44.Bc4 a4 45.Kf3 Kg7 (45...e5 46.Ke2 Kg7 47.Kd3=) 46.Kf4 (46.Ke3 e5–/+) 46...Kf6 47.e5 Ke7 (better is 47...Kg7–/+) 48.Kg5? (48.Ke4 f6=) 48...h5 (better is 48...b3!?–+) 49.Bb5+= a3 50.Bc4 Ke8 51.f4 Ke7 52.h4 Ke8 53.Kf6 Kf8 54.Bb3 Ke8 ½–½. Bartle,Georg (1710) – Berwanger,Tobias, Baden–ch AT3, 2005.

6.cd5 ed5

7.Bb5 Nbd7 8.bc5 Bc5 9.Nf3 0–0 10.0–0 Qb6 11.Bf6 Nf6 (Black gets deadly initiative) 12.Qa4 a6 13.Be2 h6 (13...Ne4 14.Ra2=+) 14.d4 (14.Nc3 Rac8=) 14...Bd6=+ 15.Nbd2 Rfc8 16.Bd1? (better is 16.Qd1–/+) 16…Rc3–+ (17.Ne5 Qb2–+) 0–1. Hamers,Herman H – Smit,Dick, corr, 1946.

7.bc5 Bc5 =.

5.a3 Nc6

6.Nf3= a6 7.cd5 ed5 8.Be2 =.

6.Nf3 Be7

7.cd5 Qd5 8.b5 Nd8 =.

7.cd5 Qd5 8.Nc3 Qd6 9.b5 Nd8 10.d3 =.

7.cd5 Qd5 8.Nc3 Qd7 (8...Qd6 9.Nb5 Qd8 10.Ne5 Ne5 11.Be5+=) 9.Bb5+= 0–0 (9...Bg4 10.h3 Bf3 11.Qf3+=) 10.Nd4 (10.Ne5 Qe8+=) 10...Bg6 (better is 10...e5!? 11.Nf5 Qf5 12.Bc6 bc6=) 11.Qa4+/– Rfd8 12.Bc6 (12.0–0 a6 13.Bc6 bc6 14.Nc6 Re8+/–) 12...bc6 13.Qc6 Qc6 (better is 13...Qc8!?+/–) 14.Nc6+– ½–½. Reimer,Karl – Stahl,Michael, Pfalz–op, 1996.

7.cd5 Qd5 8.Nc3 Qd8 9.Bb5+= 0–0 10.Bc6 bc6 11.Nd4 Qd6 (11...c5 12.Nf5 ef5 13.bc5 Bc5 14.d4=) 12.Qf3 (12.Nf5 ef5 13.Qc2 Rfd8+=) 12...a5 (12...c5 13.Nf5 ef5 14.bc5 Qc5 15.0–0+=) 13.Nc6 (13.ba5 Rfb8 14.Ra2 Ra5 15.Qc6 Qd8+=) 13...ab4 (13...Bg4 14.Ne7 Qe7 15.Qf4+=) 14.Nb4 (14.ab4 Ra1 15.Ba1 Bg4 16.Ne7 Qe7+=) 14...Rab8 15.Bc1 (15.Qc6 Qd8+=) 15...Bg4 (15...Rb6 16.d4=) 16.Qc6+= Rb6 (16...Bf5 17.d3+=) 17.Qd6+/– Bd6 18.Nc2 (18.f3 Bh5+/–) 18...Bf5+= 19.Nd4 Bd3 20.Nde2 (20.Na4 Rb7+=) 20...Ra8= 21.0–0 Rba6=+ 22.f3 Ba3 23.Ba3 Ra3 24.Ra3 Ra3 25.Kf2 h5 26.Rc1= Kh7 27.Nd4 c5=+ 28.Nc2 Rb3 29.Ne1 c4 30.e4 Rb7 31.Nd3+/– cd3 32.Ke3 g5 33.Kd3 Kg6 34.Ke3 e5 35.Ne2 Rb2 36.Rc5 Nd7 37.Rc7 Nf8 38.g3 Ne6 39.Rc6 Kg7 40.h3 Rb1 41.f4 ef4 42.gf4 Rh1 43.f5? Rh3–/+ 44.Kf2 Rh2 45.Kf1 Re2–+ 46.fe6 Re4 47.ef7 Kf7 48.Kf2 h4 49.Rd6 g4 50.Rh6 g3 51.Kf3 Rd4 52.Ke3 Rf4 (53.Kf4 g2 54.Rh7 Kf6 55.Rh6 Kf7 56.Rh7 Kf8 57.Rh8 Kf7 58.Rh7=; 52...Rg4 53.Kf3 g2 54.Kg4 g1Q 55.Kf4 Qd4 56.Kf3 Kg7–+) 0–1. Manninen,Juha – Kusmierek,Jozef, corr 3GMM–20, 1997.

5.a3 Nbd7

6.Nc3 a5 7.ba5 Ra5 8.Nf3 +=.

6.Nc3 Nb6 7.cd5= ed5 8.d3 (8.Nb5 Nbd7=) 8...Qe7 9.Be2 g6 (better is 9...a5!?=) 10.g4+/– Be6 11.g5 Nfd7? (better is 11...Nh5 12.Bh5 gh5+/–) 12.Nb5+– Rg8 13.Nc7 Kd8 14.Na8 Na8 15.Nf3 Bg4 (15...Nab6 16.Rc1+–) 16.h4 Nc7 17.Rc1 Nb5 (17...Bg7 18.Bg7 Rg7 19.Qc2+–) 18.Qc2 (better is 18.Qa4 Nd6 19.Qa7+–) 18...Nb6 (18...Nd6+–) 19.Bf6 Na3 (19...Qf6 20.gf6 Bd6 21.Ng5+–) 20.Be7 (20.Qc7! Ke8 21.Qb8 Kd7 22.Rc7 Kd6 23.Re7 Kc6 24.Nd4) 20...Be7+– 21.Qc7 Ke8 22.Ne5 (22.Ne5 Be2 23.Ke2+–) 1–0. Aubertin,Tim (1740) – Mischke,Daniel, Saarlouis op 6th, 2003.

6.Nc3 c5 7.Qb3 d4 8.ed4 cd4 9.Nce2 e5 10.f4 ef4 11.Nd4 Bg6 12.Qf3 Bd6 13.Qb7 0–0 14.Be2 (better is 14.Nc6!? Qe8 15.Ne2=) 14...Be4–/+ 15.Qa6 Bg2 16.Qd6 Bh1 17.Qf4 Be4 18.0–0–0 Rc8 19.Ngf3 Nb6 20.d3 Bg6 21.Nb5 Qe7 22.Bf1 Nbd5 23.Qd2 Rfd8 24.Bh3 Ne3 25.Bc8 Nd1 26.Kd1? (better is 26.Bd4 Rc8 27.Na7+=) 26...Rd3–+ (26...Rc8?! 27.Qe2 Qd8 28.Bd4–/+) 27.Bf6 Qf6 28.Nbd4 Rd2 (28...Rf3?! 29.Nf3 Qf3 30.Qe2 Qb3 31.Ke1+=) 29.Kd2 Qf4 30.Kc3 Be4 31.a4 Bf3 32.Nf3 Qf3 33.Kd4 Qf6 34.Kc5 Qb6 (34...Qb6 35.Kd5 Qd8 36.Ke5 Qc8–+) 0–1. Delphin,Nils Hakon – Einarsen,Kenneth (1645), Oslo ASKO Hostturnering, 2006.

6.c5 e5 7.Nf3 Qe7 8.Be2 g6 (8...Bg4 9.0–0=) 9.0–0 Bg7 10.Nh4 Be6 11.f4 ef4 12.ef4 Nh5 13.Bg7 (13.Bh5?? Bb2 14.Ra2 Bd4 (14...Qh4?! 15.Rb2 gh5 16.Qe1 Qe1 17.Re1–+) 15.Kh1 Qh4–+ (15...gh5?! 16.Nf3 Bg7 17.c6 bc6 18.Qc2–+)) 13...Ng7 14.g3 0–0 15.Bd3?? (better 15.Re1=) 15...Qf6–+ 16.Qb3 (16.f5 Qa1 17.fe6 fe6–+) 16...Qa1 17.Nc3 d4 18.Nd5 (18.Ra1 Bb3 19.Nb5 a5–+) 18...Bd5 19.Qd5 (19.Ra1?? Bb3 20.Nf3 Ne6–+) 19…Qa3 (19...Qa3 20.Bb5 c6 21.Qd7 Qb4–+) 0–1. Zak,P (1735) – Kanicki,K (2095), Wroclaw Open Poland, 2018.

6.c5 Be7 =.

6.d4 Be7 7.Nf3 h6 (7...a5 8.ba5 Ra5 9.Nc3=+) 8.c5 (8.cd5 ed5 9.Bd3 Ne4=) 8...c6 9.Bd3 0–0 10.Bf5 ef5 11.0–0 Re8 12.a4 Qc7 13.Nbd2 Ne4 14.Rc1 Bf6 15.Re1 (15.Qc2 b6=) 15...g6 (15...a5 16.Ba3=) 16.Nf1 (16.Qb3 f4=) 16...Kg7 (16...a5 17.Ba3=+) 17.g3 (17.Qc2 f4=) 17...h5 (17...a5 18.b5=+) 18.h4 Rh8 19.Kg2 g5 20.hg5+/– Bg5 21.N1d2 Ndf6 22.Rh1?? Be3!–+ 23.Ne4 Ne4 24.Nh4 Bf2 25.Nf5=+ Kg6?? 26.Qf3+/– Rag8 27.Rh3 f6? 28.Rf1 Bg3+/– 29.Rg3 Ng3 30.Ng3 Kf7?? 31.Qf6+– (31...Ke8 32.Re1 Kd7 33.Re7 Kc8 34.Rc7 Kc7 35.Qe5 Kc8 36.Bc1+–) 1–0. Strebel,Hans – Hartmann,W, RH–ch Wallertheim, 1994.

6.cd5 ed5 7.Nf3 c6 (7...Bd6 8.Be2=+) 8.Be2= Bd6 9.0–0 (9.Nd4 Bg6=) 9...Qc7 10.d3 (10.Nc3 Be4=) 10...Ne5 (10...0–0 11.Nc3=) 11.Ne5 (11.Nd4 Bd7=) 11...Be5 12.Be5 Qe5 13.d4 Qe7 (13...Qe6 14.b5=) 14.Nd2 (14.b5 0–0=) 14...0–0 15.Qb3 Ne4 (15...a6 16.Rfc1=) 16.Ne4 Be4 17.Bd3 (17.Rac1 Rfe8=) 17...Rfe8 (17...f5 18.b5=) 18.Qc2 (18.Be4 Qe4 19.Rac1 a6=) 18...f5 (18...Qg5 19.Be4 Re4 20.Rfe1=) 19.Be4 (19.Qc3 Qg5 20.Be4 Re4=) 19...fe4 20.Rfc1 (20.Rab1 a5=) 20...Qh4 (20...Rf8 21.Rab1=+) 21.Kh1 Re6 22.g3 Qh3–/+ 23.Rg1 Rh6 24.Rg2 Rf8 25.Qe2 Rf5 26.Qd1 Rfh5 27.Kg1 Qg2! 28.Kg2 Rh2 29.Kf1 Rh1 30.Ke2 Rd1 31.Rd1 Kf7 32.Rc1 Ke7 33.b5 Kd7 34.bc6 Rc6 35.Ra1 b5 36.Kd2 Ra6 37.Kc3 Rf6 38.Rf1 Kc6 39.Kb3 Kb6 40.Kb4 a5 41.Kb3 a4 42.Kb2 Ka5 43.Kb1 b4 44.Kb2 Rc6 45.Ra1 b3 46.Rc1?? Rc1 47.Kc1 Kb5 (48.g4 h6–+) 0–1. Eisenhauer,Erik – Erbs,Axel, SJRH–ch U18 Worms, 2001.

6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 Nbd7 6.a3).

5.a3 Be7

6.d4 0–0 7.Nf3 c6 (7...a5 8.Qb3=+) 8.Nbd2 (8.Nc3 Bd6=+) 8...Ne4 (8...a5 9.Bc3=+) 9.Ne4= Be4 10.Nd2 Bf5 11.Be2 (11.Qf3 a5 12.b5 cb5 13.cd5 b4= (< 13...Qd5 14.e4 Be4 15.Qe4+–)) 11...a5 12.c5 (12.ba5 Qa5 13.c5 b5=) 12...b6 (12...ab4 13.g4 Bg6 14.ab4 Ra1 15.Qa1=+) 13.0–0= e5 (13...ab4 14.ab4 Ra1 15.Qa1=) 14.Nb3 (14.ba5 Ra5 15.Nb3 Ra7=) 14...e4 (14...ab4!? 15.ab4 Ra1 16.Ba1 bc5 17.dc5 Nd7=) 15.ba5 bc5 16.dc5 Bc8 (16...Nd7 17.Nd4 Bf6 18.Nc6+/– (18.Nf5?! Bb2 19.Rb1 Bc3=)) 17.Rb1 Bf6 18.Bf6 Qf6 19.Qd4 Qg5 20.f4 (20.f3 Bf5 21.Rb2 ef3 22.Bf3 Re8=) 20...ef3 21.Bf3 Be6 22.Qf4 Qf4 23.ef4 Rd8 24.Kf2 Bf5 25.Rb2 Na6 26.g4 Rab8? 27.gf5+= Nc5 28.Nc5 Rb2 29.Be2 Rc2 30.Nd3 c5 31.a6 f6 32.Rb1 Re8 33.a7?? Rce2–+ 34.Kf1 R2e7 35.Rb8+/– Ra7 36.Re8 Kf7 37.Rc8 c4 38.Nb4 Ra5 39.Rc7 Kg8 40.Nc2 Rb5 41.Nd4 Rb1 42.Ke2 Rb2+/– 43.Ke3 Rh2 44.Ne6 Rh3 45.Kd4 Ra3 46.Kd5 Rd3 47.Ke4 Rg3 48.Rc4 h5 49.Rc8 Kf7 50.Rh8 Ra3 51.Rh5 Ra4 52.Kf3 Ra5 53.Kg4 Ra1 54.Rh8 Rg1 55.Kf3 Ke7 56.Rg8 Kf7 57.Rc8 Ke7 58.Rc7 Kd6 59.Rg7 Rf1 60.Kg4 Rg1 61.Kh5 (61...Rd1 62.Kg6+–) 1–0. Boehnke,Hartmut – Bechler,Falk, DESC, 2001.

6.Nf3 dc4 7.Bc4 Nbd7 8.d4 Nb6 Black threatens to win material: Nb6xc4 9.Bb3 (9.Bd3 a6=) 9...Qd7 (9...a5 10.ba5 Ra5 11.Nc3=) 10.0–0 c6 Consolidates d5 11.Nbd2 Rd8 (11...0–0 12.Qe2=) 12.Re1 Qc7 13.e4 Bg6 14.Ne5 Nbd7 15.Ng6 hg6 16.e5 White threatens to win material: e5xf6 (16.Nf3 a5+=) 16...Nb6 (16...Nd5 17.Qc2+=) 17.Qf3 (17.ef6 Qh2 18.Kf1 Bf6+/–) 17...Nfd5 A sound move 18.Ne4 Rh5 Black loses the right to castle 19.Rad1 Nd7 White has an active position 20.Ng3 White threatens to win material: Ng3xh5 20...Rh8 21.b5 White has an active position 21...Nb8 Black has a cramped position 22.Rc1 (22.Ne4 Kf8+/–) 22...Qa5 23.bc6 Nc6 White has an active position. 24.Qd1 (24.Ne4 Rh5=) 24...Kf8 25.Ne4 Nf4 26.Qf3 g5 27.g3 White threatens to win material: g3xf4 27...Nh3 28.Kg2 Nd4?? (28...g4 29.Qg4 Qb6+/–) 29.Bd4+– Rd4 30.Be6 Nf4 31.gf4 fe6 32.fg5 Ke8 33.Re3 Kd8?? terrible, but the game is lost in any case 34.Rec3 Qe5 35.Rc8 Kd7 36.Nf6!! Clearance: e4 36...gf6 37.Qb7 (37.Qb7 Kd6 38.Qc6) 1–0. Martinez Rodriguez,E – Gonzalez Fernandez,MA, Asturias–chT Preferente, 2001.

6.Nf3 Nbd7 7.d3 c6 8.Nbd2 0–0 9.Be2 a5 10.Qb3 Ne8 11.e4 dc4 12.Nc4 a4 13.Qc3 Bf6 14.e5 Bg5 15.Bc1 Bc1 16.Rc1 Nb6 17.Ne3 Bg6 18.0–0 Nc7 19.Rfd1 Nbd5 20.Nd5 Nd5 21.Qc4 Bh5 22.Rc2 Qc7 23.g4 Bg6 24.Rcd2 f6 25.Qd4 Rad8 26.ef6 Nf6 27.Qc4 Nd5 28.Ng5 Qe7 29.Nh3 Qd6 30.Bf1 Rd7 31.Re1 Rf6 32.Rde2 Bf7 33.Re5 h6 34.f4 b5 35.Qe4 Nc3 36.Qe3 Rg6 37.g5 Nd5 38.Qf3 Nc3 39.Qe3 ½–½. Lien,Gaute – Dyrnes,Jussi, Blindern, 2002.

6.Nf3 h6 7.Be2 c6 (7...0–0 8.Nc3=) 8.d4 (8.Nd4 Bg6=) 8...0–0 9.0–0 Ne4 10.Nc3 Nd7 11.c5 b5 (11...Ndf6 12.Ne4 Be4 13.Bd3=) 12.cb6 (12.a4!? a6 13.Bd3+=) 12...ab6+= 13.Ne4 Be4 14.Nd2 (14.Bd3 Bd3 15.Qd3 c5+=) 14...Bh7 15.Nb3 Qc7 16.Rc1 Rac8 (16...Bd6!? 17.f4 Rfc8+=) 17.Ba6= Ra8 18.Bb5 Nb8 19.Rc3 Rc8 20.Qc1 (20.Qh5 Bg6 21.Qg4 Bd6+=) 20...Ra7 21.Bc6 (21.f3+=) 21...Qd8?? (21...Nc6 22.b5 Qd7 23.bc6–/+) 22.b5?? (better is 22.Bb5 Rcc7 23.Rc7 Rc7 24.Qa1+=) 22...Rac7–/+ 23.Nd2 (23.f3 Nc6 24.bc6 Qe8–/+) 23...Qd6 24.a4 Nc6 (24...Rc6? 25.bc6 Rc6 26.Ba3 Rc3 27.Bd6 Rc1 28.Rc1 (28.Be7 Rc2 29.Nb1 Nc6+=) 28...Bd6 29.Rc8 Bf8 30.Rb8+–) 25.Ba3 (better is 25.bc6 Rc6 26.Nb1–/+) 25...Qd8 (better is 25...Nd4 26.Bd6 Ne2 27.Kh1 A) 27...Nc1?? 28.Rc7 (28.Bc7 Na2 29.Rc6 Nb4+/–) 28...Rc7 29.Bc7+–; B) 27...Rc3 28.Qc3 Nc3 (28...Rc3 29.Be7 Rc2 30.Nf3–/+) 29.Be7 Na4–+) 26.bc6+= Ba3 27.Qa3 Rc6 28.Rfc1 Rc3 29.Rc3 Rc7 30.Qc1 Rc3 31.Qc3 g5 (31...Qa8 32.Nb3=) 32.h3 Kg7 33.Nf3 Bg6 (33...Qd7!?=) 34.Qc6+= Qb8 35.Ne5 h5 36.Nd7 Attacks the isolani on b6 36...Qe8 37.Qb5 (better is 37.Qd6!? Qd8 38.Qe5 Kh6 39.Nf6+/–) 37...Bd3= 38.Qc6 Bc4 (38...Bg6 39.Qd6 Qd8 40.Qe5 Kh6 41.Nf6+/–) 39.Qd6 (better is 39.f3+=) 39...b5?? (better is 39...Qd8=) 40.Qe5+– Kh6 41.Nf6 Qa8?? (41...Qd8 42.a5! b4+– (worse is 42...Qa5 43.Ne8 Qe1 44.Kh2 Qh1 45.Kh1 h4 46.Qg7 Kh5 47.Nf6)) 42.h4! gh4 43.Qh5 Kg7 44.Qg5 Kh8 45.Qh6 1–0. Bartle,Georg (1675) – Schumacher,Ursula, 2rd Berlin Germany, Senior Championship, 2010.

6.Nc3 0–0

7.cd5 ed5 8.Nf3 c6 (8...a5 9.b5=) 9.Be2= Nbd7 10.Nd4 Bg6 11.Nb3 (11.f4 c5 12.bc5 Nc5=) 11...Ne4 12.0–0 Qb6 13.Ne4 Be4 (13...de4 14.d3=) 14.d3 Bg6 15.d4 (15.Bd4 Qb5+=) 15...a5 (15...Bd6 16.Rc1=) 16.ba5 Qc7 17.Bc3 Bd6 18.g3 (18.h3 Rfe8+=) 18...Nf6 19.Bb4 Qe7 20.Bd6 Qd6 21.Nc5 Rfb8 22.a4 (22.Qb3 Ne4 23.Ne4 Be4+=) 22...Ra5= 23.Bd3 (23.Qb3 Qc7=) 23...Bd3 24.Qd3 b6 25.Nb3 Ra7 (25...Raa8 26.Rfc1=) 26.Nd2 (26.a5!?=) 26...Rba8–/+ 27.Rfb1 b5 (27...Ra4?! 28.Ra4 Ra4 29.Rb6=) 28.Qc2 Ra4 29.Ra4 Ra4 30.Rc1 Ra6 31.Nb3 Nd7 32.Qc3 h6 33.Nc5 (33.Qc2!?–/+) 33...Nc5–+ 34.dc5 Qe7 35.Rb1 Ra4 36.Rb4 Qa7 37.Ra4 Qa4 (37...ba4 38.Qa3–+) 38.Qe5 Qa8 39.e4 de4 40.Qe4 Qa1 41.Kg2 Qf6 42.Qb4 Qe6 43.g4 Qd5 44.f3 Qa2 (44...g5 45.Qc3–+) 45.Kg3–/+ Qa4 46.Qe1 Qa8 47.h4 (47.Qe4 Qb8 48.Kg2 Qc8–/+) 47...Qc8 (47...Qb8 48.Kg2–+) 48.Qb4 Qe6 49.h5 (49.Kf2 g5 50.hg5 hg5–/+) 49...Qd5 (better is 49...Qe3!?–+) 50.Qc3–/+ Kf8 51.Qa3 (51.Kf2 f5–/+) 51...Ke7 (51...Qe5 52.f4 Qe1 53.Kh3 Qf1 54.Kg3 Qg1 55.Kh3 Qh1 56.Kg3–+) 52.Qc3–/+ f6 53.Qa3 Ke6 54.Qa7? (better is 54.f4–/+) 54...Qd7?? (better is 54...f5 55.Qb6 Qe5 56.Kh3 Kd5–+) 55.Qa2= Qd5 56.Qa7 Qe5 (56...f5 57.Qb6–+) 57.Kg2 Qe2 (better is 57...f5!? 58.Qa2 Kf6–+) 58.Kg3–/+ Qe5 59.Kg2 Qe2 (59...f5 60.Qa2 Qd5 61.gf5 Kf6 62.Qf2–+) 60.Kg3–/+ Qe5 (60...Qe1 61.Kg2 Kd5 62.Qg7 Qe2 63.Kg3 Qe5 64.Kg2 Qf4+= (worse is 64...Kc5 65.Qh6 b4 66.Qd2=)) 61.Kg2= Qe2 ½–½. Buck,Klaus Michael (1705) – Wood,Peter C (1940), EU–chT Seniors, 2007.

7.Nf3 Nbd7 8.cd5 ed5 9.Be2 h6 10.Nd4 Bg6 11.0–0 a5 12.b5 Rc8 13.Rc1 c5 14.bc6 bc6 15.d3 Re8 16.Na4 Attacking the backward pawn on c6 16...c5 17.Nb3 Bf8 18.Bf3 (18.Qd2 Bd6+=) 18...d4 (18...c4!? 19.dc4 dc4=) 19.ed4+= cd4 20.Rc8 Qc8 21.Bd4 Qa6 Attacks the isolani on d3 22.Bf6 Qf6 23.Be4 Be4 24.de4 Rd8 25.Qf3 (25.Na5 Ne5 26.Qc2 Ba3+=) 25...Qc6 (25...Qf3 26.gf3 A) worse 26...Ba3 27.Rd1+= (worse 27.Na5 Ra8–/+); B) 26...Rb8=+) 26.Nc3+= Ne5 27.Qg3 a4 28.Nc1 Nc4 29.N1e2 Na3 30.Nd5 Nc2 31.Qc3 (31.Rc1 Nd4 32.Nec3 Ra8=) 31...Rc8 (31...Qc3 32.Nec3 a3 33.Rc1–/+) 32.Qc6 (32.Rc1!? Qa6 33.Qh3=) 32...Rc6–/+ 33.Rc1 a3 34.Nec3 Nb4 35.Nb4 Bb4 36.Na2 Rc1 37.Nc1 Kh7 38.Kf1 Kg6 39.Ke2 Bc5 40.f3 f5 41.Kd3 fe4 42.fe4 Bd6 43.h3 Kg5 44.Kd4 Bc7 45.e5 Kf5 46.g4 Ke6 47.Ke4 Be5 48.h4 (48.Na2 g6–+) 48...Bf6 (better 48...g6 49.Na2–+) 49.g5? (49.h5–+) 49...hg5 50.h5 g4 51.Na2 Bg5 52.Nb4 Bh6 53.Kd3 g3 54.Ke2 g2 55.Kf2 Kd6 0–1. alekhinebattery (2295) – yodagm (2190), gameknot.com, 2020.

6.cd5 ed5

7.Nc3 a5 =+.

7.Nf3 0–0 8.Be2 c6 9.0–0 Nbd7 10.d3 a5 11.b5 cb5 12.Nd4 Bg6 13.Nb5 Qb6 14.a4 Nc5 15.Ba3 Rfe8 16.N1c3 Ne6 (16...Rac8 17.Rc1 Qe6 18.d4=) 17.Qb3 Exerts pressure on the isolated pawn 17...Ba3 18.Qa3 (18.Ra3 Rad8=) 18...Rac8 (18...d4 19.ed4 Nd4 20.Nd4 Qd4 21.Nb5+=) 19.Rfc1 (19.d4 Rc6=) 19...Nc5 (19...d4!? 20.ed4 Nd4 21.Nd4 Qd4+=) 20.d4+= Nce4 21.Bf3 (21.Ne4 Ne4 22.Qb3 Rcd8+=) 21...Nc3 22.Rc3 Rc3 23.Qc3 Qc6? (23...Be4!?+=) 24.Qa5 (24.Qc6 bc6 25.Na7 Ra8 26.Nc6 Kf8+/–) 24...b6 25.Qc3 Qc3 26.Nc3 Be4 27.Be4 de4 28.Rb1 Nd7 (28...Rc8 29.Ne2 Nd7 30.Ng3+–) 29.Kf1 f5 30.Ke2 Kf7 31.Nd5 (31.f3 Rc8 32.Kd2 Rc4+–) 31...Ra8+/– 32.Rb4 Ra6 33.Kd2 Ra5 34.Nc3 Ke6 (34...h6 35.f3 ef3 36.gf3+–) 35.f3 ef3 36.gf3 g6 37.Kd3 Kd6 38.Kc4 White prepares d5 38...Kc6 39.e4 White intends d5 39...fe4 40.d5 (40.fe4!? Rh5 41.Rb2 Nf6+–) 40...Kc7 41.fe4 Rc5 (41...Ne5 42.Kb3 Nd3+–) 42.Kd4 1–0. Pereira,Celestino Leal – Marialves,Lonnyane Ramos, Manaus BRA, Open Ch, 2011.

6.cd5 Qd5

7.Nc3 Qd8 8.Nf3 0–0 9.Bc4 Nc6 (9...Nbd7 10.0–0=) 10.0–0 a6 11.Re1 (11.d4 Bd6=) 11...b5 12.Bb3 (12.Be2 Qd6=) 12...Bg4 (12...Bd3 13.Bc2=) 13.d4= a5 14.Nb5 ab4 15.a4? (better is 15.Bc4=) 15...Na5–/+ 16.Bc2 (better is 16.e4–/+) 16...Nd5?? (16...Nc4 17.Qc1 Bf3 18.Bh7 Kh7 19.Qc4–+) 17.Be4? (17.Qd3 Nf6 18.Ne5 Bh5=) 17...c5?? (better is 17...c6–+) 18.Qc2 (18.dc5 Bc5 19.h3 Bh5=) 18...cd4 (18...f5 19.Ne5 b3 20.Qb1=) 19.Bd4 (19.Bh7 Kh8 20.Ne5 de3 21.Ng4 f5 22.Ne3 Kh7 23.Nd5 ed5+/–) 19...Bf6 (19...f5!? 20.Bd5 ed5+=) 20.Bf6 (20.Bh7 Kh8 21.Be4 Bf3 22.Bf3 Bd4 23.Nd4 Rb8+/–) 20...Qf6 21.Bh7 Kh8 22.Be4 Rac8 (22...b3 23.Qb1 b2 24.Ra2+=) 23.Qe2 (23.Qb1 Bf3 24.Bf3 b3+/–) 23...Nc3 (better is 23...Rfd8+=) 24.Qd3?? (24.Nc3 Qc3 25.h3 f5 26.hg4 fe4+/–) 24...b3 (24...Nb3 25.Nc3 Na1+=) 25.Nd2?? (25.Nc3 Bf3 26.Bf3 Qc3+/–) 25...Rcd8?? (25...Rfd8 26.Nd4 A) 26...Ne4 27.Qe4 Bf5 A1) worse is 28.Nf5 ef5 (worse is 28...Qf5 29.Qh4 Qh7 30.Qb4+=) 29.Qb4 Nc6 30.Qb3 Rd2–/+; A2) 28.Qf3=; B) 26...e5–+) 26.Qc3 (26.Nd4 Ne4 27.Qe4 Bf5+=) 26...Qc3 27.Nc3 Rd2 28.Rab1 (28.f3 Bf5 29.Bf5 ef5=) 28...Rb8 (28...f5 29.h3 Bh5 30.Bf3 Bf3 31.gf3=) 29.Rec1 (29.h3 Bf5 30.Bf5 ef5+=) 29...Nc4 (better is 29...b2!? 30.Rc2 Nc4=) 30.Nb5+/– Nb6 (better is 30...Nb2!?+/–) 31.Rb3+– Na4 (better is 31...Bd1 32.Rb4 Ba4+–) 32.Rcb1?? (better is 32.Nd6! Rf8 33.Nf7 Kg8 34.Ng5+–) 32...Nc5+= 33.Rb4 Ne4 34.Re4? (better is 34.f3 Bf3 35.gf3–/+) 34...Rb5!–+ 35.Re1 (35.Rb5 Rd1 Mate attack) 35...Bf5 36.Rh4 Kg8 37.e4 (37.h3 Rbb2 38.e4 Bg6–+) 37...Bg6 (better is 37...g5 38.Rh6 Kg7 39.ef5 Kh6 40.fe6–+) 38.h3 Rbb2 (38...Kf8 39.Rh8 Ke7 40.e5–+) 39.Rc1 Kf8?? (better is 39...f5 40.Rc8 Kf7–+) 40.Rc7= Bh7 (better is 40...Bh5! 41.Rh5 g6+=) 41.Rh7+/– Kg8 42.Rh4 g6 (better is 42...Rbc2 43.Rb7 Rb2 44.Rb2 Rb2+/–) 43.e5?? (better is 43.Rf4 f5 44.ef5 ef5 45.Ra4+/–) 43...Rf2+= 44.Rc8 Kg7 45.Rch8 (better is 45.Rg4–/+) 45...g5 (better is 45...Rg2 46.Kf1 g5 47.R8h7 Kg6 48.R4h6 Kf5 49.Rf7 Ke5–+) 46.R4h7= Kg6 47.Rh6 Kf5?? (better is 47...Kg7 48.R6h7 Kg6 49.Rh6 Kg7 50.R6h7=) 48.Rf6+– Ke5 1–0. wlittle (2160) – smungiu (2055), net–chess.com, 2005.

7.Nc3 Qd8 8.Nf3 0–0 9.d4 Nc6 10.Bd3 Bd3 11.Qd3 a6 12.0–0 b5 13.Rac1 Re8 14.Ne2 Na7 15.Ne5 Qd6 (15...Bd6 16.Rfd1 Qe7 17.e4+=) 16.Rfd1 Nd5 17.e4 Nb6 18.Nf4 (18.Qc2 f6+=) 18...Bg5 19.Qg3 f6 20.Ned3 Nc4 21.Rc2 Nb2 22.Rb2 Qd4 23.Qf3 (23.Rc2 Rac8 24.Qf3 Qd6+=) 23...Nc6=+ 24.Rbd2 (24.Ne2 Qc4–/+) 24...Ne5 25.Ne5 Qe5 26.g3 c5 (26...f5 27.ef5 Bf4 28.Qf4 Qf4 29.gf4 ef5 30.Rd7=+) 27.h4 (27.Rd7!? c4 28.Qh5=+) 27...Bh6–/+ 28.bc5 Qc5 29.Rd3 a5 30.Rc3 Qb6 31.Rb3 g6 (31...Bf4!? 32.Qf4 Rac8–/+) 32.Rdb1 b4 33.ab4 a4 34.Ra3 Bf8 35.Qc3 Kf7 36.Ra2 (36.h5 Qb5=) 36...Rec8=+ 37.Qd2 Rc4 Increasing the pressure on the isolated pawn on b4 38.Qd7 Attacking the isolated pawn on a4 38...Be7 39.Nd5 Threatening mate... how? 39...Qd6?? (39...Qd8 40.Qe7 Qe7 41.Ne7 Ke7 42.f3=+) 40.Qb7 (better 40.Qd6 Bd6 41.Nb6 Rb4 42.Rb4+–) 40...Rb8 (40...Re8!? 41.Ne7 Re7=) 41.Qe7+= Qe7 42.Ne7 Ke7 43.Ra4 Rb7 44.f3 e5 45.g4 f5 46.gf5 gf5 47.ef5 The passed pawn on f5 will become decisive later (47.Ra5 Kf6 48.Ra6 Kf7 49.ef5 Rcb4 50.Rb4 Rb4+=) 47...Kf6 48.Kg2 Kf5 49.Kg3 h5 50.Rb3 Rb6 51.Rb2 Rg6 52.Kh3 Rb6 53.Kg3 Rg6 54.Kh3 Rb6 55.Rb3 Kf4 56.Kg2 (better 56.Ra8!? Kf5 57.Rf8 Kg6 58.Rg8 Kf6 59.Rh8 Rbb4 60.Rb4 Rb4 61.Rh5+=) 56...Rg6=+ 57.Kh3 (57.Kf1 Rc1 58.Kf2 Rc2 59.Kf1 Rgg2=+) 57...Rg3–/+ 58.Kh2 e4 The mate threat is Rc2 59.Raa3?? (better 59.Rb2 Rf3 60.Ra8–/+) 59...Rc2 60.Kh1 ef3 (60...Rh3 61.Kg1 Rc1 62.Kg2 Rch1 63.fe4 R3h2) 61.Rc3 (61.Rf3 Rf3 62.Ra1 Rh3 63.Kg1 Rch2 64.Kf1 Rh1 65.Ke2 Ra1 66.b5 Ra2 67.Ke1 Rh1) 61...Rh3 62.Kg1 Rg2 63.Kf1 Rh1 0–1. workchess – ctrotter, net–chess.com, 2020.

6.Be2 0–0

7.Nf3 Nbd7 8.d3 dc4 9.dc4 c5 10.b5 =+.

7.Nf3 Nbd7 8.d3 c6 9.Nbd2 dc4 10.Nc4 c5 11.bc5 Nc5 12.Nd4 =.

7.Nf3 Nbd7 8.d3 c6 9.Nbd2 Qc7 10.Nh4 Bg6 11.Ng6 fg6 12.Nf3 Rad8? (12...dc4 13.dc4 c5 14.Ng5+=) 13.Nd4 (13.Ng5 Rfe8+/–) 13...Qe5? (13...Kf7!?+=) 14.Qb3 dc4+/– 15.dc4 Kh8 16.Nc6!+– Qf5? 17.Ne7 Qg5 18.Bf3 Ne5 19.Be5 Qe5 20.0–0 Qc7 21.Ng6 hg6 22.c5 e5 23.Qc2 Qf7 24.Rac1 g5 25.h3 g6 26.Rfd1 Kg7 27.Rd8 Rd8 28.Qc4 Qc4 29.Rc4 Kf8 30.c6 bc6 31.Rc6 Ke7 32.Rc7 Rd7 33.Rd7 Kd7 34.b5 Kc7 35.a4 Kb6 36.Bd1 Nd5 37.Bc2 Ne7 38.Kf1 Kc5 39.Ke2 Kc4 40.Kf3 (40...Kc3 41.Be4+–) 1–0. Skaug,T – Johansen,B, Roros, 2002.

7.Nf3 Nbd7 8.d3 c6 9.Nbd2 h6 10.0–0 Re8 (10...a5 11.Qb3=) 11.Re1 (11.Qc2 a5=) 11...Bf8 (11...c5 12.Qb3=) 12.d4 (12.Qc2 Bg6=) 12...a5 13.b5 cb5 (13...Qc7 14.Rc1=) 14.cb5 (14.c5 b4+=) 14...Qb6 (14...Rc8 15.Rc1+=) 15.Rc1 Rac8 16.Qa4 Qa7 17.Ne5 Ne5 18.de5 Nd7 19.Bd4 (19.Nb3 b6 20.Nd4 Nc5=) 19...Nc5+= 20.Bc5 Bc5 21.Nb3 Bb6 22.Nd4 Bg6 23.Qb3? (better is 23.f4+=) 23...Bd4–+ 24.ed4 Qd4 25.Rc8 (25.Qe3 Qb2 26.Rcd1 Rc2–+) 25...Rc8 26.Qe3 Qe3 27.fe3 Rc3 28.Kf2 Ra3 29.Rc1 Ra2 30.Rc8 Kh7 31.Ke1 a4 32.Rb8 a3 33.Rb7 Rb2 34.Ra7 a2 35.Bd1 Bc2 36.Bc2 Rc2 37.Kd1 Rb2 38.b6 Kg6 39.b7 Rb7!! 40.Ra2 Kf5 41.Ke2 Ke5 42.Kf3 f5 43.Ra8 Rf7 44.Rh8 f4 45.Rh7 fe3 46.Ke3 Kf5 47.Rh8 e5 48.Re8 Ra7 49.Rf8 Kg6 50.Rd8 Ra3 51.Ke2 d4 52.Rd5 Kf5 53.h3 Ke4 54.Rd7 Ra2 55.Kf1 g5 56.Rd6 d3 57.Re6 Kd4 58.g3 e4 59.Rh6 Ke3 60.Rb6 Kf3 61.Rb1 e3 62.h4 gh4 63.gh4 Rh2 64.Kg1 Rh4 65.Rd1 d2 66.Rf1 Ke2 67.Kg2 Rg4 68.Kh3 Kf1 69.Kg4 0–1. Bartle,G (1720) – Josting,F (2025), 7th ch–Euro Senior, Hockenheim GER, 2007.

6.Nf3 0–0

7.Nc3 c5 8.cd5 cb4 9.ab4 Nd5 10.Nd5 Qd5 11.Bc3 (11.Ra5!? Qe4 12.Re5+=) 11...Nc6–/+ 12.b5 Nb4 13.Bb4 Bb4 14.Ra4 Qd6 (better is 14...Qc5!? 15.Nd4 Bg6–/+) 15.Qb3= Rac8 16.Qb2 (16.Rb4 Rc1 17.Ke2–+) 16...Rc2–+ 17.Qd4 (17.Qb4?? Rc1 18.Ke2 Qd3) 17...Rd8 18.Qd6 (18.Rb4? Qc7 19.b6 ab6–+; 8.Qb4?? Rc1 19.Ke2 Qd3) 18...Rd6 19.Nd4 (19.Rb4?? Rc1 20.Ke2 Bd3) 19...Bd2 20.Ke2 Rb2 (20...Bc3!? 21.Kf3 Bd4 22.ed4 h5–+) 21.Ra7 g5 22.Kf3 (22.Nf5 ef5 23.Kf3 Be1–+) 22...Bc3 23.g4 Bd4 (23...Bg6!? 24.Ne2 Bf6–/+) 24.Ra8+= Kg7 25.gf5 Bc5 26.Rg1 Kf6 ½–½. Svensek,M (2055) – Lazar,Ales ST (2135), TCh–SLO East 1st League, Sentjur SLO, 2009.

7.d4 b6 8.Nc3= c5 9.cd5 (9.dc5 bc5 10.cd5 cb4 11.ab4 Bb4 12.de6 fe6=) 9...ed5 (9...cb4 10.ab4 Nd5 11.Bd3 Bb4 12.Rc1=+) 10.Bb5 (10.dc5!? bc5 11.Bb5=) 10...a6=+ 11.Ba4 (11.Bd3 Bd3 12.Qd3 c4=+) 11...b5 12.Bc2 Bc2 13.Qc2 cb4 14.ab4 Bb4 15.0–0 Nbd7 16.Ng5 (16.Qb3 Bc3 17.Bc3 Qc7=+) 16...g6 (16...Nb6 17.Rfc1–/+) 17.Qb3 Bc3 18.Bc3 Nb6 19.Ba5 Qd6 (better 19...Qb8–/+) 20.Bb4+= Qd8 21.Bf8 Qf8 22.Nf3 Nc4 23.Qc3 b4 24.Qd3 a5 25.Ne5 Ne5 26.de5 Ne4 27.Qd5 Nc3 Black prepares the advance a4 28.Qc4 a4 29.e6 fe6 30.Qe6 Qf7 31.Qe5 Qc4 (better 31...a3=+) 32.Kh1?? (better 32.f4=) 32...b3–+ 33.Rac1 (33.Qe7 a3 34.Rfe1 a2–+) 33...Rc8 34.Rfd1?! (34.Rfe1–+) 34...b2 35.Rc3 Qc3 36.Qd5 (36.Qe6 Kh8 37.h3 Rb8–+) 36…Kg7 (36...Kg7 37.Qd7 Kh8 38.Qa4 Qf6–+) 0–1. Fettito (1800) – Grig77 (1765), lichess.org, 2019.

7.d4 c6 8.Nc3 b6 9.Be2 c5 (9...dc4 10.Bc4 a5 11.b5=) 10.bc5+= bc5 11.cd5 cd4? (better 11...Nd5!? 12.Nd5 Qd5 13.dc5 Qc5+=) 12.Nd4+– Nd5? (better 12...Qb6 13.de6 fe6+–) 13.Nf5 Nc3 14.Ne7 (14.Bc3 ef5 15.Bf3 Qd1 16.Kd1 Nc6+–) 14...Qe7 15.Bc3 Rd8 16.Qb3 Nc6 17.0–0 Rab8 18.Qc4 Qc7 19.Qg4 (19.Rfc1 Rbc8+–) 19...f5 (19...Ne5 20.Be5 Qe5 21.Rad1+–) 20.Qg3 (20.Qc4 Qf7+–) 20...e5 (20...Qg3 21.hg3 Kf7 22.Rab1+–) 21.Rac1 f4 (21...Qe7 22.a4+–) 22.ef4 ef4 23.Qf3 Rb3 (23...Rbc8+–) 24.Bc4 Kh8 25.Bb3 Qd6 26.Bg7! (26.Bg7 Kg7 27.Rc6+–) 1–0. moss42 (1985) – Filonek (1705), ChessWorld.net, 2013.

7.d4 c6 8.Bd3 Bd3 9.Qd3 dc4 10.Qc4 Nbd7 (10...a5 11.ba5 Qa5 12.Bc3=+) 11.Nbd2 Nb6 12.Qb3 Rc8 13.0–0 h6 (13...Qd5 14.Qc2=) 14.Rac1 (14.e4 Bd6=) 14...Nfd5 15.Nc4 Nc4 16.Rc4 b5 17.Rc2 Nb6 (17...a5 18.e4 a4 19.Qd3+=) 18.Rfc1 (18.Ne5 Qd5 19.Qd3 Rfd8+=) 18...Nc4 19.Nd2 Nb2 20.Qb2 Qd7 21.Rc3 Rc7 (21...Rfd8 22.Qc2+=) 22.Qc2+/– Rfc8 23.a4?? (better is 23.Nb3+/–) 23...Bb4–/+ 24.Rb3? Bd2 25.Qd2–/+ ba4 26.Ra3 c5–+ 27.f3 cd4 28.Rc7 Qc7 29.ed4 Qc1 30.Qc1 Rc1 31.Kf2 Rc2 32.Kg3 Rc4 33.Rd3 a5 34.d5 ed5 35.Rd5 Rc1 36.Ra5 Ra1 37.h4 a3 38.Kg4 a2 39.f4 g6–+ 40.f5 gf5 41.Kh5 Kg7 42.g3 Kh7 43.Ra6 Kg7 44.Ra5–/+ Kh7 45.Ra6= ½–½. Istvanny (1670) – tonjan (1665), internet, 2007.

7.d4 Nbd7 8.Be2 (8.Nc3 a5 9.b5 Ne4=) 8...Bg6 (8...dc4 9.Bc4 Bd6 10.0–0+=) 9.Nbd2 dc4 (9...a5 10.b5=) 10.Bc4 (10.Nc4 a6=) 10...Nb6 11.Be2 Nbd5 (11...Bd6 12.Ne5=) 12.0–0 h6 (12...Ng4 13.Qb3=) 13.Ne5+= Bh7 14.Ndf3 Ne4 15.Bd3 c6 16.Qc2 Nef6 17.Bh7 Nh7 18.Rfe1 (18.e4 Nc7+=) 18...Nhf6 (18...Ng5 19.Ng5 Bg5 20.e4+=) 19.Rad1 (19.e4 Nb6+=) 19...Rc8 (19...a5 20.e4 Nb6 21.ba5 Ra5 22.Rd3+=) 20.h3 (20.e4 Nb6+=) 20...Bd6 (20...Nc7 21.Nd3+=) 21.Nd3 Bb8 22.Nde5 Qc7 (22...Bd6 23.e4 Ne7 24.Nd3+=) 23.Rc1 (23.e4 Nb6+=) 23...Rfd8 24.Red1 Nd7 25.Kf1 Ne5 26.de5 Rd7 27.e4+= Ne7 28.Rd7 Qd7 29.Rd1 Qe8 30.Qd2 Bc7 31.Qd7 Qd7 32.Rd7 Kf8 33.Ke2 Ke8 34.Rd1 Rd8 35.Rd8+= Kd8 36.Kd3 Ng6= 37.g3 Kd7 38.Kc4 b5 39.Kd3 h5 40.h4 a5= 41.Bc3 ab4 42.ab4 Kc8 43.Kc2 Kb7 44.Ng5+= Be5 45.Nf7+/– Bc3 46.Kc3 Kc7 47.Kd4 Nf8 48.f3 Ng6 49.Ne5 ½–½. Schiffner,Kevin – Schmitt,Philipp (1610), GER–chT U12, 2004.

7.Be2 dc4 8.Bc4 (8.Nc3 a5 (8...c5 9.Bc4 cb4 10.ab4 Nc6 11.b5 Nb4 12.0–0) 9.Bc4 ab4 10.ab4 Ra1 11.Qa1 Nc6 12.b5; 8.0–0 a5 (8...Bd3 9.Ne5 Nc6 10.Nd3 cd3 11.Bf3 Nd7 12.Qb3) 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Bb4 12.Bc4) 8...c5 (8...Nbd7 9.Nc3 Nb6 10.Be2 a5 11.b5 Nbd5 12.0–0; 8...a5 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Bb4 12.Qa7) 9.bc5 Bc5 (9...Nc6 10.Nc3 Bc5 11.d4 Be7 12.0–0) 10.d4 (10.Nc3 Nbd7 11.Be2 Rc8 12.0–0) 10...Bb6 (10...Bd6 11.Nc3+= Nbd7 12.Nb5) 11.0–0 (11.Nc3 Nc6 12.0–0) 11...Nc6 12.Nc3 Rc8 13.Ba2 h6 14.d5 ed5 15.Nd5 Nd5 16.Qd5 Qd5 17.Bd5 Rfe8 18.Rac1 Be4 19.Be4 Re4 20.Ne5 f6 21.Nc6 Rc6 22.Rc6 bc6 23.Rc1 Re6 24.Kf1 Kf7 25.Ke2 Rd6 26.Rc4 c5 27.Bc3 Rd7 28.Ra4 Ke6 29.f3 Kd5 30.e4 Kc6 31.e5 fe5 32.Be5 Kd5 33.Bb2? c4–+ 34.Rb4 Kc5 35.Bc1? Re7–+ 36.Kf1 Ba5 37.Rb1? Re1 38.Kf2 Bd2!! 39.Rb5 Kb5 40.Bd2 Re6 41.Bc3 g6 42.g4 Ka4 43.Bb2 Kb3 44.Bc1 h5 45.gh5 gh5 46.Kg3 Re1 47.Bh6 Ka3 48.Kh4 Rh1 49.Bf8 Kb3 50.Kg3 c3 51.Kg2 c2 52.Bh6 c1Q 53.Bc1 Rc1 54.Kg3 a5 55.Kh4 Rh1 56.Kh5 Rh2 57.Kg5 Rf2 58.f4 a4 59.f5 Rf5! 60.Kf5 a3 (60...a3 61.Ke4 a2 62.Kd4 a1Q 63.Kd5 Qd1 64.Ke4 Qh1 65.Kd3 Qa1 66.Ke2 Qe5 67.Kf3 Qf6 68.Ke3 Qf5 69.Ke2 Kc4 70.Kd1 Qf2 71.Kc1 Kc3 72.Kd1 Qd2) 0–1. Makoveev,Ilya – Badalyan,Vazgen (1910), Kislovodsk RUS, Open, 2013.

7.Be2 c5 8.b5 (8.bc5 dc4 9.Bc4 Bc5=+) 8...Nbd7 9.0–0 dc4 10.Bc4 Nb6 11.Be2 c4 12.a4 Bd3 13.Re1 (13.Bd4 Ne4=) 13...Nbd5 (13...Rc8 14.a5 Nbd5 15.a6 ba6 16.Ra6 Be2 17.Re2=) 14.Ba3 (14.Ne5 Be2 15.Qe2 Nb4=) 14...Rc8 (14...Nb4 15.Bb4 Bb4 16.Nc3=+) 15.Bd3= cd3 16.Qb3 Ba3 17.Na3 Nb6 (17...Ne7 18.Ne5=) 18.a5 (18.e4 Nh5=) 18...Nbd5 (18...Qd5 19.Qd5 Nbd5= (19...ed5?? 20.ab6 ab6 21.Ne5+–)) 19.Nc4+= Qe7. Zaichenko,Andrey – Denchev,Stanimir, FICGS, 2008.

7.Be2 Nbd7 8.0–0 c6 9.d4 Ne4 10.Nbd2 Ndf6 11.Nh4? (better 11.Ne4 Ne4 12.c5=) 11...Nd2–/+ 12.Qd2? (better 12.Nf5 Nf1 13.Ne7 Qe7 14.Qf1–/+) 12...Ne4–+ 13.Qc1 Bh4 14.f3 Nf6 (better 14...Ng3!? 15.Re1 Ne2 16.Re2–+) 15.g3? (15.e4 Ne4! 16.fe4 Be4–+) 15...Bh3 (better 15...Bg5!? 16.f4 Bh6 17.Qd1–+) 16.gh4 Bf1 17.Qf1 Nh5 18.Qh3 f5 19.f4 Nf6 20.Kh1 (20.h5 Ne4–+) 20...Ne4 21.Rg1?? (21.Kg1–+) 21…Nf2 (21...Nf2 22.Kg2 Nh3 23.Kh3 a5–+) 0–1. moss42 (2010) – TomOne (1785), ChessWorld.net, 2015.

5.Qb3 Nbd7

6.Nf3 a5 7.c5 (7.ba5!? Nc5 8.Qb5 c6 (8...Nfd7 9.cd5 ed5=) 9.Qb6= Qb6+=) 7...ab4–/+ 8.d4 c6 (8...Be7 9.Qb4 b6–/+) 9.Nbd2 b6 10.cb6 Qb6 11.Ne5 (11.Nh4!?–/+) 11...Ne5–+ 12.de5 Nd7 13.e4 Nc5 14.Qe3 Be4 (14...de4?! 15.Bd4 b3 16.Rb1–+) 15.Bd4 Qa5 (15...b3 16.Nb3 Qb4 17.Ke2 Nb3 18.ab3 Ra1 19.Ba1–+) 16.Nb3 Nb3 17.ab3 Qd8 (17...Qa1 18.Ba1 Ra1 19.Ke2 Ra2 20.Ke1–+) 18.Ba6 (18.Rc1 Qd7–+) 18...Be7 (better is 18...Bg2!? 19.Rg1 Be4–+) 19.0–0 0–0 20.f3 (20.Rfc1 Qc7–/+) 20...Bg6 21.Rfc1 Qd7 22.Bc5 Bc5 23.Qc5 Qc7 24.f4 Rfd8 25.Qc6 (25.Qb4 Rab8 26.Qc5 Rb3 27.Qc6 Qc6 28.Rc6 Rb2–+) 25...Qa7–+ 26.Kf1? (better is 26.Qc5–+) 26...Qe3 27.g3 Ra6! 28.Qd7 Rf8 29.Ra6 Qf3 30.Ke1 Bd3 (30...Bd3 31.Qf7 Kf7 32.Rc7 Kg8 33.Rg7 Kg7 34.Ra7 Rf7 35.Ra2 Qe3 36.Kd1 Rc7 37.f5 Rc1#) 0–1. Kokje,Aron – Arnett,David A, Bermuda–B, 1995.

6.Nf3 a6 7.c5 a5 8.a3 ab4 9.ab4 Ra1 =.

6.Nf3 dc4 7.Bc4 Nb6 8.Be2 Bd6 9.0–0 0–0 =.

6.Nf3 c6 7.Nc3 a5 8.ba5 dc4 9.Qc4 Qa5 +=.

6.Nf3 Be4 7.d4 Bf3 8.gf3 dc4 9.Bc4 Nb6 +=.

6.Nf3 Be7 7.Nc3 (7.cd5 ed5 8.Nd4 Be4=) 7...c6 (7...a5 8.a3+=) 8.d4 (8.cd5 ed5 9.Nd4 Bg6+=) 8...a6 (8...0–0 9.Rc1+=) 9.Be2 0–0 10.0–0 Qc7 11.a4 Ne4 (11...dc4 12.Qc4 Qd6 13.b5=) 12.Rac1 (12.Ne4 de4 13.Nd2 a5=) 12...Qb6 (12...dc4 13.Bc4 Qd6 14.Ne4 Be4 15.Nd2=) 13.c5 Qc7 14.Ne4 Be4 15.b5 Bf6 (15...cb5 16.ab5 ab5 17.Nd2=) 16.Nd2 Bf5 17.f4 (17.b6 Qb8+=) 17...Kh8 (17...cb5 18.ab5 a5 19.g4+/–) 18.Nf3 (18.b6 Qc8+/–) 18...Rg8 (18...ab5 19.ab5 cb5 20.Bb5=) 19.Bd3 (19.Ne5 Rgf8+=) 19...Bd3= 20.Qd3 ab5 21.ab5 Ra2 (21...cb5 22.Qb5 Qc6 23.Qe2=) 22.b6+= Qd8 23.Qb3 Ra6 24.Ra1 Nb8 25.Bc3 (25.Qd3 Rf8+=) 25...Ra1 26.Ra1 Na6 27.Be1 (better is 27.Qc2+=) 27...Nc5!–/+ 28.Ng5 (28.dc5 Ba1 Pinning (28...Ba1 Deflection)) 28...Bg5 (28...Nb3?? 29.Nf7) 29.dc5 Bf6 (29...Be7 30.Bb4+=) 30.Ra7 (30.Bc3 Be7 31.Bd4 Qf8+=) 30...Qd7 (30...Qe7 31.Qc2–/+) 31.Qd3 (31.Bc3 Bc3 32.Qc3 f6=) 31...e5 (31...Qe7 32.Bb4–/+) 32.Bc3+= Be7 (32...e4 33.Qd2+=) 33.Be5 Bc5 34.Qc3 f6 (34...Bf8!?+=) 35.Qc5= fe5 36.fe5 Re8 37.Qd6 Qf7 (37...Qg4 38.h3 Qg5 39.Qa3 Qe5 40.Rb7=) 38.h3+= h6 (better is 38...Kg8!?+=) 39.Qc6!+/– Re7 (39...bc6 40.Rc7 Double attack (40.Rf7 Pinning; 40.Rf7 Deflection; 40.Rc7 Decoy)) 40.Ra8 (40.Qd6 Kh7+/–) 40...Kh7+/– 41.Qc2 Qg6?? (better is 41...g6+/–) 42.Rh8!!+– (42.Rh8 Kh8 43.Qg6 Re5 44.Qf7 Re3 45.Qb7 Re1 46.Kh2+–) 1–0. Camci,Ali Ammar – Ozdemir,Utku, Istanbul TUR, 2011.

5.Qb3 Be7

6.Nf3 h6 7.c5 (7.cd5 Qd5 8.Bc4 Qd6=) 7...0–0+= 8.Be2 b6 9.d4 Ne4 10.0–0 Bf6 (10...a5 11.cb6 a4 12.Qd1 Bb4 13.bc7 Qc7 14.Ba3+=) 11.Nbd2 (11.Nc3 Bg4 12.Qc2 Nc3 13.Qc3 a5+=) 11...bc5 (11...Nd2 12.Nd2 bc5 13.dc5=) 12.dc5 Nd7 13.Rfd1 (13.Ne4 Be4 14.Nd4 Be5=) 13...Rb8 14.Bf6 Ndf6 (14...Qf6 15.Rac1=) 15.Ne4+= Ne4 16.Rac1 (16.Ne5 Nc5 17.Qa3 Qd6=) 16...Bg4 (16...Qf6 17.Qa3=) 17.Nd4 (17.Qa4 c6=) 17...Be2+= 18.Ne2 c6 (18...Qh4 19.g3 Qf6 20.f4+=) 19.f3= Nf6 20.Nd4 (20.Qa4 Qc7+=) 20...Qc7= 21.a4 Rfc8 22.Rd2 g6 23.Rb2 e5 24.Ne2 Qe7 25.Qc3 Nd7 26.Ng3 a5 27.ba5 Rb2 28.Qb2 Rb8 29.Qc3 Qd8 30.Rc2 Ra8–/+ 31.e4 d4 32.Qd2 Kg7 33.f4 Ra5 34.Rc4 Rc5–+ 35.Rc5 Nc5 36.fe5 Na4 37.Ne2? d3 38.Nf4 Qd4 39.Kf1 Nc5 40.e6 fe6 (40...fe6 41.Qf2 Qe4–+; 40...Ne4 41.Qe2 de2 42.Ke2 Qd2 43.Kf3 Ng5 44.Kg4 f5 45.Kh4 Qf4 46.g4 Qg4#) 0–1. Buczko,J – Gerencer,Jozef (2155), Szekszard op, 1998.

6.Nf3 0–0

7.a3 =+.

7.Nc3 a5 8.b5 +=.

7.Nc3 c6 8.Be2 (8.d3 Nbd7+=) 8...h6 (8...dc4 9.Qc4 b5 10.Qb3+=) 9.Nd4 (9.cd5 cd5 10.Rc1 Nc6=) 9...Bh7 10.f4 (10.d3 dc4 11.dc4 a5=) 10...Nbd7 (10...dc4 11.Bc4 b5 12.Be6+=) 11.cd5= cd5 (11...ed5 12.0–0=) 12.0–0 a5 13.a3 ab4 14.ab4 Qb6 15.Ndb5 Rfc8 16.Na4 Qd8 17.d3 Nb6 18.Bd4 Na4 19.Ra4 Ra4 20.Qa4 Ra8 21.Qb3 Qd7 22.Nc3 Ne8 23.Bc5 Nd6 24.Rc1 Nf5 25.Nd1 Bg6 26.d4 Bd8 27.b5 Nd6 28.Nb2 Ra5 29.Bb4 Ra8 30.Bc5 Ra5 31.Bd6 Qd6 32.Rc8 Kh7 33.Na4= Qd7 34.Rc1 Ra8 35.Nc5 Qe7 36.b6 f5 37.Rb1+= Be8 38.Bb5 Bb5 39.Qb5 Kg8 40.Qd7 Qd7 41.Nd7 Ra6 42.Nc5 Rb6 43.Ra1 Be7–/+ 44.Ra8 Kf7 45.Ra7 Bc5 46.dc5 Rb1 47.Kf2 Kf6 48.h3 Rb5–+ 49.g4 g5 50.c6 Rb2 51.Kf3 bc6 52.Rh7 fg4 53.hg4 gf4 54.Rh6–/+ Ke7 55.ef4 Rb3 56.Kf2 c5 57.g5 d4 58.Rh7 Kd6 59.g6 Rb8 60.Rf7 Rg8 61.g7 Kd5 62.Ke2 Ke4–+ 63.Kd2 c4 64.Kc2 Ke3–+ 65.Rd7 Ra8 66.Ra7 Rg8 67.Rd7 c3 68.Rd6? Rg7 69.Re6 Kf4 70.Kd3 Rc7 71.Re1 c2 72.Rc1 Kf3 73.Rf1 Kg2 74.Rc1 Kf2 75.Kd2 Rc3 76.Rh1 c1Q! 77.Rc1 Rc1 78.Kc1 Ke2 (78...Ke2 79.Kc2 d3 80.Kb1 d2 81.Ka2 Kd3 82.Kb3 d1Q 83.Kb2 Qa4 84.Kb1 Qb5 85.Ka2 Kc3 86.Ka3 Qb3#) 0–1. Althoff,Guntram (2185) – Labahn,Dieter (2040), Wichern op, 1999.

7.Be2 dc4 8.Qc4 Nc6 9.b5 =+.

7.Be2 Nbd7 8.0–0 dc4 9.Bc4 Nb6 10.Be2 Nfd5 11.a3 Bg4 (11...c5 12.bc5 Bc5 13.d3=+) 12.d4 Qe8 (12...a5 13.e4 Nf4 14.Bb5=) 13.Nbd2 a5 14.b5 Bd6 15.Rfc1 a4 16.Qc2 Ra5 17.Bd3 h6 (17...Rb5 18.e4 Nf4 19.Bb5 Qb5 20.Rcb1=) 18.Ne5+= Be5 19.de5 Ra8 20.Bd4 Qb8 (20...Rd8 21.Bc5 Ne7 22.Bh7 Kh8 23.Be4+/–) 21.h3 Bh5 22.g4 Bg6 23.Bg6 fg6 24.Qg6 Qe8 (24...Qc8!?+/–) 25.Qe8+– Rae8 26.Ne4 Nd7 27.Rc4 Ra8 28.Nc3 N7b6 29.Bb6 Nb6 30.Rc7 Rf7 31.Rf7 Kf7 32.Ne4 Nc4 33.f4 Ke7 34.Kf2 Rd8 35.Nc5 Rd2 36.Kf3 Rb2 37.Nb7 Rb5+/– 38.Rc1 Nd2? 39.Ke2+– Rb7 40.Kd2 Rb2 41.Kd3 Rh2 42.Rc4 Rh3 43.Ra4 Rg3 44.f5 h5 45.Ra7 Kf8 46.gh5 ef5 47.Kd4 Rh3 48.Kd5 Rh5 49.Ke6 Kg8 50.a4 Rh3 51.Ra8 Kh7 52.Kf5 Re3 53.a5 Re1 54.a6 Rf1 55.Ke6 g5 56.a7 Ra1 57.Kf5 Ra5 58.Kg4 Kg7 59.e6 (59...Ra4 60.Kg5 Ra5 61.Kf4+–; 59.Kg5?! Re5 60.Kf4 Ra5+–) 1–0. Kreuzer,Uwe – Haller, Landesliga, 1992.

7.Bf6 gf6 8.cd5 Qd5 9.Qd5 ed5 10.Nc3 +=.

7.Bf6 Bf6 8.d4 Be7 +=.

6.Nf3 Nbd7

7.Nc3 a5 8.Nd4 ab4 9.Nd5 Nc5 =+.

7.Nc3 a5 8.Nd4 ab4 9.Nd5 ed5 10.Nf5 Nc5 11.Qc2 +=.

7.Nc3 a5 8.Nd4 ab4 9.Nd5 ed5 10.Nf5 Nc5 11.Ng7 Kf8 12.Qd1 Kg7 –+.

7.Be2 dc4 8.Bc4 Nb6 9.Bf6 Bf6 10.d4 =+.

7.Be2 h6 8.0–0 (8.cd5 Nd5 9.Bg7 Rg8=+) 8...0–0 (8...dc4 9.Bc4 a5 10.a3=) 9.d4 (9.d3 a5 10.a3 a4=) 9...dc4 10.Bc4 (10.Qc4 Nb6 11.Qb3 Nfd5=) 10...Nb6 11.Be2 Qd5 (11...Nfd5 12.b5=) 12.Qd5 ed5 13.Bc3 (13.b5 Rfe8=) 13...Na4 14.Be1 Bd6 15.a3 a6 16.h3 Rfe8 17.Nc3 Nb6 18.Nd2 c6 19.Nb3 Nc4 20.Na5 Na5–/+ 21.ba5 c5 22.dc5=+ Bc5 23.Na4 Ba7 24.Ra2 d4 25.Nb6 Rad8 26.ed4=+ Rd4 27.Bc3 Rd6 28.Bb4 Rc6 29.Bf3 Be4 30.Be4 Re4 31.Na4 Nd5–/+ 32.Rb1 Rec4 33.Rd2=+ Rc1 34.Rc1 Rc1 35.Kh2 Nb4 36.ab4 Rc4 37.Rb2 Bd4 38.Rb3 Bf2 39.Nb2 Rc2 40.b5? h5 41.Nd3–/+ Bd4 42.ba6 ba6 43.Nb4 Be5 44.Kg1 Rc5 45.Na6 Ra5 46.Nb8 Ra1 47.Kf2 h4 48.Nc6 Bg3 49.Kf3 Rf1 50.Kg4 g6 51.Rg3 hg3 52.Kg3 Kg7 53.Ne5 Ra1 54.Nf3 Ra3 55.Kg4 Kf6 56.Kf4 Ra4 57.Kg3 g5 58.Kh2 Kf5 59.Ng1 Ra3 60.Ne2 Ke5 61.Ng3 f5 62.Ne2 g4 63.hg4 fg4 (Black gets strong initiative) 64.Ng3 Kf4 65.Nh5 Kg5 66.Ng3 Rb3 67.Ne2 Kh4 68.Kh1 g3 69.Ng1 Kg4 70.Nh3 Kf5 71.Ng1 Ke4 72.Ne2 Ra3 73.Ng1 Ke3 74.Nh3 Ra8 (75.Ng1 Rh8 76.Nh3 Rh3 77.gh3 Kf2 78.h4 g2 79.Kh2 g1Q 80.Kh3 Qg3#) 0–1. Mehlhorn,Uwe (2180) – Fuhrmann,Daniel (2325), Oberliga Ost–A, 2002.

5.b5 a6

6.a4 c6 7.Nc3 Nbd7 (7...Bd6 8.Nf3=+) 8.Nf3 Be7 (8...ab5 9.ab5 Ra1 10.Qa1=) 9.Be2 (9.cd5 cd5 10.Nd4 Bg4=) 9...0–0 (9...dc4 10.bc6 bc6 11.Bc4=) 10.0–0 (10.bc6 Qb6+=) 10...ab5 (10...dc4 11.bc6 Qb6 12.Nd4=) 11.ab5 Qc7 (11...Ra1 12.Qa1 dc4 13.bc6 bc6 14.Bc4=) 12.d3 (12.cd5 Nd5 13.Nd4 Bg6=) 12...h6 (12...e5 13.Qd2=) 13.Qd2 (13.Nd4 Bg6=) 13...dc4 14.dc4 Nc5 15.Ra8 (15.Nd4 Nfe4 16.Ne4 Ne4=) 15...Ra8=+ 16.Nd4 Bg6 (16...Rd8 17.Qe1=+) 17.bc6 (17.Rd1 e5 18.Nf3 Nb3–/+) 17...bc6=+ 18.Bf3 (18.f4 Nfe4 19.Qc1 Nc3 20.Bc3 Ra2=+) 18...Bd6 (18...Rd8 19.Qe1 (19.Bc6? Nb3 20.Ncb5 Nd2 21.Nc7 Nf1 22.Kf1 Bd3 23.Kg1 Bc4–+) 19...Nd3 20.Qa1=+) 19.h3 (19.Nc6 Bh2 20.Kh1 Nce4 21.Ne4 Be4 (21...Ne4? 22.Qd4 f5 23.Be4 fe4 24.g3+–) 22.Bf6 Bf3 23.gf3 gf6=) 19...Rd8 20.Qc1 e5 21.Nc6= e4 22.Be4 Nfe4=+ 23.Nd8 Qd8 24.Nd5 Qg5 (25.f4 Qd8=+). Brisson – McMahon,Daire (2275), Massy op2, 1993.

6.cd5 ed5 7.ba6 Na6 =+.

6.a4 ab5

7.ab5 Ra1 8.Ba1 dc4 9.Bc4 Bd6 10.Nf3 0–0 11.0–0 Nbd7 12.d3 Nb6 13.e4 Be4?? (better 13...Nc4 14.ef5 Nb6 15.fe6 fe6=) 14.de4+– Nc4 15.e5 (15.Qe2 Nb6 16.e5 Nfd5 17.ed6 Qd6+–) 15...Nd7 (15...Ne5!? 16.Ne5 Nd5+–) 16.ed6+– Nd6 17.Nc3 Nf6 18.Qe2 Qe7 19.Rd1 Rd8 20.Rd4 Nf5 21.Rd8 Qd8 22.h3 h6 23.Qb2 (23.Qa2 c5+–) 23...Ne8 24.Ne2 (24.Qa3 Qd3+–) 24...f6 25.Ned4 (25.Qc2 Qd7 26.Nf4 Qf7+–) 25...Qd5 26.Nf5 Qf5 27.Nd4 Qe4 (27...Qd5 28.Qe2 e5 29.Nf5+–) 28.Qa2+– Qd5 29.Qe2 (29.Qd5!? ed5 30.Ne6 b6+–) 29...e5+– 30.Nf5 Qc5 (30...Qb3 31.Kh2+–) 31.Bb2 (31.Qa2!? Kf8+–) 31...Nd6 32.Nd6 cd6 33.Qd3 Qc7? (better 33...d5+–) 34.Ba3+– Qd7 (34...Kf7 35.Qd6 Qd6 36.Bd6+–) 35.Qd5 Kh7 36.Bd6 Qc8 (36...Kg6 37.f3+–) 37.Qc5 (37.Bc5!? Kg6+–) 37...Qc5 38.Bc5 Kg6 39.f3 Kf5 40.Kf2 g6 (40...Ke6 41.Ke2+–) 41.Ke3 Ke6 42.Bb6 Kd5 (42...Kd7 43.Ke4 Kd6 44.h4 f5 45.Kd3+–) 43.Bd8 f5 44.h4 Kc4 45.b6 Kd5 (45...h5 46.Bc7 Kd5 47.Kd3+–) 46.g4 h5 47.gh5 gh5 48.Bc7 Ke6 49.f4 e4 50.Kd4 Kf6 (50...e3 51.Ke3 Kd5+–) 51.Kd5 e3 52.Be5 Ke7 53.Bc3 e2 54.Ke5 Kd7 55.Kf5 Kc6 56.Ke6 Kb6 57.f5 (57.f5 Kb5 58.f6 Ka6 59.f7 e1N 60.Be1 Ka7 61.f8Q Kb6 62.Kd7 Ka6 63.Qa3 Kb5 64.Qb4 Ka6 65.Qa5) 1–0. Sokac,Marko (2065) – Lausic,Mirko (1815), Durdevac Croatia, Team Youth Championsh, 2013.

7.ab5 Ra1 8.Ba1 c5 9.Nf3 Bg4 (9...Be7 10.cd5 ed5 11.Be2=+) 10.h3 Bh5 11.Be2 (11.d3 Bd6=) 11...Bf3 (11...dc4 12.0–0=) 12.Bf3+= Bd6 (12...Nbd7 13.0–0=) 13.0–0 (13.cd5 e5 14.0–0+=) 13...Qc7? (13...Nbd7 14.d4+=) 14.d3 (better 14.Bf6!? gf6 15.cd5+–) 14...Nbd7+= 15.Nd2 (15.cd5 ed5 16.Bf6 Nf6+=) 15...0–0= 16.cd5 (16.g4 dc4 17.Nc4 Rb8=) 16...Nd5 (16...ed5 17.Qa4=) 17.Nc4 N5b6 (better 17...N7b6!?=) 18.Nd6+– Qd6 19.Bb7 Ne5 (19...Rb8 20.Bc6+–) 20.d4+– cd4 (20...Nec4 21.Qg4 e5 22.de5+–) 21.Bd4 (21.Qd4 Qd4 22.Bd4 Nec4+–) 21...Rd8 (21...Nec4 22.Be4+–) 22.Qa1 (22.Qh5 Nec4+–) 22…f6 1–0. GuestXSBG – lavradordeideias, freechess.org, 2016.

7.ab5 Ra1 8.Ba1 Nbd7 9.Nc3 (9.Nf3 Nb6+=) 9...dc4–/+ 10.Bc4 Ne5 11.Be2 Nd3 12.Bd3 Bd3 13.Nge2 Nd5 14.Qb3 (14.Qa4 Nb4–/+) 14...Nc3 15.Nc3 Qg5 Threatening mate: Qxg2 16.g3 Qg4 17.Qd1 Qb4 18.Qc1 Bd6 19.h4 Qg4 20.Qd1 (20.Rg1–+) 20...Qg3! 21.Ne2 (21.fg3 Bg3 The nicest combinations are those leading to mate) 21...Qf3 Threatening mate... how? 22.Rg1 Bh2 The mate threat is Bxg1 (22...Bh2 23.Nf4 Qd1 24.Kd1 Bg1 25.Nd3 f6–+) 0–1. Rebber,C (2145) – Krueger,Heiner, Schloss Open, Werther GER, 2000.

7.cb5 Bb4 8.Qb3 Ba5 9.Bc3 Bc3 10.dc3 (10.Nc3 d4 11.ed4 Qd4=+) 10...0–0 11.Nd2 c6 (11...Nbd7 12.a5–/+) 12.c4 (12.bc6 bc6 13.Ngf3 Nbd7=+) 12...Nbd7 13.Ngf3 Ne4 14.Ne4 Be4 15.Nd4? (better 15.Qc3=+) 15...Qa5–+ 16.Kd1 dc4 17.Bc4 cb5 (17...Nc5!? 18.Qa3 Na4 19.Rc1–+) 18.Nb5 (better 18.Qb5!? Nb6 19.Qa5 Ra5 20.Bb3–/+) 18...Rfd8 19.Ke2 Nc5 (better 19...Ne5!? 20.Rhd1 Bg2 (20...Nc4?! 21.Qc4 Bg2 22.Qc7–/+) 21.Rd8 Rd8–+) 20.Qc3–/+ Qc3 21.Nc3 Bg2 22.Rhg1 Bh3 23.Rg3 (better 23.a5–/+) 23...Bf5–+ 24.e4 Ne4 25.Ne4 Be4 26.Re3 Bd5 (26...Bc6 27.Rb3–+) 27.Bb5 Bc6 (27...Rac8 28.Bd3–+) 28.Bc6 bc6 29.Rc1 (29.Rb3 Ra5–+) 29...Ra4 30.Rc6 h6 31.Rec3 Rad4 32.Ke3 (32.R6c4 Rc4 33.Rc4 g6–+) 32...g5 (32...Rh4!? 33.Rc7–+) 33.Rc8 Kg7 34.Rd8 Rd8 35.Rd3? (35.h3–+) 35...Rd3 36.Kd3 Kf6 37.Ke3 Ke5 38.h3 (38.Kf3 Kd4–+) 38...f5 39.f3 (39.Kf3 h5 40.Ke3 f4 41.Kf3 Kf5–+) 39...f4 (better 39...h5 40.h4 f4 41.Kf2 gh4 42.Kg2–+) 40.Kf2 (40.Kd3 Kf5 41.Ke2–+) 40...Kd4 41.Ke2 Kc3 42.Kf2 If White now only could play Kc2... 42...Kd2 43.Kg2 Ke2 44.Kh2 Kf3 45.Kg1 Kg3 (45...Ke2 46.h4 f3 47.h5 f2 48.Kg2 f1Q 49.Kg3 Qh1 50.Kg4 Qf3) 46.Kh1 e5 (46...f3 47.Kg1 f2 48.Kf1 Kf3 49.h4 h5 50.hg5 e5 51.g6 e4 52.g7 e3 53.g8Q e2) 47.Kg1–+ e4 48.Kf1 e3 49.Ke2 Kh3 50.Kf3 g4 51.Kf4 e2 52.Kf5 (52.Ke4 e1Q 53.Kd5 g3 54.Kd6 g2 55.Kc5 g1Q 56.Kb5 Qe4 57.Ka6 Qc6 58.Ka5 Qgc5) 52...e1Q 53.Kg6 Qe6 (53...g3 54.Kf6 g2 55.Kf5 g1Q 56.Kf6 Qg5 57.Kf7 Qee7) 54.Kh5 (54.Kg7 g3 55.Kh8 g2 56.Kh7 g1Q 57.Kh8 Qgg8) 54...Qe5 (54...Kg2 55.Kh4 Qf6 56.Kg4 Qg5) 55.Kg6 (55.Kh6 g3 56.Kg6 g2 57.Kf7 g1Q 58.Kf8 Qgg7) 55...g3 56.Kh7 (56.Kh6 g2 57.Kh7 g1Q 58.Kh6 Qgg7) 56...Qe7 (56...g2 57.Kh6 g1Q 58.Kh7 Qgg7) 57.Kg6 (57.Kg8 g2 58.Kh8 h5 59.Kg8 g1Q 60.Kh8 Qgg7) 57...g2 58.Kh5 (58.Kh6 g1Q 59.Kh5 Qgg5) 58…Qg5 0–1. afsharian – penguin_hunter (1810), lichess.org, 2018.

7.cb5 Bd6 8.a5 =+.

7.cb5 Nbd7 8.Nc3 c5 9.bc6 bc6 10.Nf3 Qb6 11.Ba3 Ba3 12.Ra3 c5 13.Bb5 c4 14.0–0 (14.a5 Qd6 15.Qa1 0–0+=) 14...Bd3 15.Re1 0–0 16.Qa1 Rfb8 (16...Nc5 17.a5 Qd6 18.a6–/+) 17.Nd4 (17.a5 Qd6–/+) 17...Qd6 18.a5? (better is 18.Bd7 Qd7 19.Ra2–/+) 18...e5–+ 19.Nf5 (19.Nf3 d4 20.ed4 ed4 21.Bd7 dc3 22.Ba4 cd2 23.Nd2 Ra5 24.Qc3–+) 19...Bf5 20.a6 (20.Bd7 Bd7 21.Ra2 h5–+) 20...Nc5 21.Qa2 (21.Ra5 d4 22.ed4 ed4 23.Bc4 dc3 24.Qc3 Rc8–+) 21...Nfe4 22.Ne4 Be4 (22...Be4 23.f3 Bg6 24.Bc4 dc4–+) 0–1. marinscrofan (1800) – almanzor1 (2330), gameknot.com, 2014.

5.b5 Bb1

6.Qb1 a6 7.cd5 Qd5 8.Bf6 gf6 9.e4 Qd7 10.ba6 b6 11.e5 f5 12.Bb5.

6.Qb1 Bc5 A) 7.Bd3 A1) 7...0–0 8.cd5 (8.Qc2 Nbd7 9.Nf3 g6 10.0–0 Bd6 11.cd5 Nd5 12.Bc4; 8.Nf3 Nbd7 9.Qc2 g6 10.0–0 Bd6 11.cd5 Nd5 12.Bc4) 8...ed5 9.Ne2 Nbd7 10.0–0 Bd6 11.f4 g6 12.Bd4; A2) 7...Nbd7 8.cd5 (8.Qc2 0–0 9.Nf3 g6 10.0–0 Bd6 11.cd5 Nd5 12.Bc4) 8...ed5 9.Nh3 0–0 10.0–0 Re8 11.Qc2 Bd6 12.Rab1; B) 7.Nf3 B1) 7...0–0 8.Qc2 (8.Bd3 Nbd7 9.0–0 g6 10.cd5 Nd5 11.Qc2 Bd6 12.Bc4) 8...Nbd7 9.Bd3 g6 10.0–0 Qe7 11.a4 e5 12.Be2; B2) 7...Nbd7 8.Bd3 (8.cd5 ed5 9.Be2 0–0 10.0–0 g6 11.Qc2 Qe7 12.Rac1; 8.Qc2 0–0 9.Be2 Qe7 10.0–0 Ba3 11.Bd4 e5 12.Bc3) 8...0–0 9.Qc2 g6 10.0–0 Qe7 11.cd5 Nd5 12.Bc4.

6.Qb1 Bd6 A) 7.cd5 ed5 8.Nf3 (8.Be2 0–0 9.Nf3 Nbd7 10.Qc2 h6 11.0–0 Nc5 12.Rad1; 8.Qf5 Nbd7 9.Nf3 0–0 10.Be2 Nc5 11.0–0 Qd7 12.Qc2) 8...0–0 9.Be2 Nbd7 10.0–0 g6 (10...Nc5 11.Qc2 h6 12.Rad1) 11.Qc2 (11.Bd4 Ne4 12.d3) 11...Nc5 12.d4; B) 7.Be2 B1) 7...g6 8.cd5 (8.Nf3 Nbd7 9.cd5 ed5 10.0–0 0–0 11.Bd4 Ne4 12.d3; 8.Qc2 Nbd7 9.Nf3 0–0 10.0–0 Qe7 11.a4 e5 12.cd5) 8...ed5 9.Nf3 Nbd7 10.0–0 0–0 11.Qc2 Qe7 12.Nd4; B2) 7...Nbd7 8.Nf3 (8.cd5 ed5 9.Nf3 0–0 10.0–0 Nc5 11.Qc2 h6 12.Rad1) 8...0–0 9.0–0 c6 10.bc6 bc6 11.Qc2 Rb8 12.Rab1; B3) 7...dc4 8.Bc4 (8.Nf3 Nbd7 9.Bc4 Nb6 10.Be2 0–0 11.0–0 Re8 12.Ng5) 8...Nbd7 9.Nf3 Nb6 10.Be2 0–0 11.0–0 Re8 12.Ng5; B4) 7...a6 8.Nf3 (8.cd5 ed5 9.Nf3 ab5 10.Bb5 Nc6 11.Nd4 0–0 12.Nc6) 8...ab5 9.cd5 ed5 10.Bc3 0–0 11.Bb5 Qe7 12.Bd3; C) 7.Qc2 C1) 7...0–0 8.Nf3 Nbd7 9.Be2 c6 10.bc6 bc6 11.0–0 Rb8 12.Rab1; C2) 7...Nbd7 8.cd5 (8.Nf3 Qe7 9.Be2 0–0 10.0–0 h6 11.cd5 Nd5 12.Nd4; 8.Be2 dc4 9.Bc4 Ne5 10.Be2 Nd5 11.f4 Nb4 12.Qb3) 8...ed5 9.Nf3 0–0 10.Be2 h6 11.0–0 Nc5 12.Rad1; C3) 7...g6 8.c5 Be7 9.Nf3 0–0 10.Bd4 Ne4 11.Rb1 Bf6 12.Bd3; D) 7.Nf3 D1) 7...Nbd7 8.cd5 (8.Be2 g6 9.cd5 ed5 10.0–0 0–0 11.Bd4 Ne4 12.d3) 8...ed5 9.Be2 (9.Qf5 0–0 10.Be2 Nc5 11.0–0 Qd7 12.Qc2) 9...0–0 10.0–0 g6 (10...Nc5 11.Qf5 Qd7 12.Qc2) 11.Bd4 (11.Qc2 Nc5 12.d4) 11...Nc5 (11...Ne4 12.d3) 12.Qb2; D2) 7...g6 8.h4 0–0 9.h5 Nh5 10.cd5 ed5 11.Rh5 gh5 12.Qf5; D3) 7...0–0 8.cd5 (8.Be2 Nbd7 9.0–0 g6 10.Qc2 Qe7 11.Rab1 e5 12.cd5; 8.Qc2 Nbd7 9.Be2 e5 10.cd5 Nd5 11.0–0 Qe7 12.Bc4) 8...ed5 9.Be2 Nbd7 10.0–0 Nc5 11.Qc2 g6 (11...h6 12.Rad1) 12.d4.

6.Qb1 Nbd7 A) 7.Nf3 Bd6 8.Be2 (8.cd5 ed5 9.Be2 0–0 10.0–0 Nc5 11.g3 Re8 12.Qf5; 8.Bd3 0–0 9.0–0 g6 10.Be2 Qe7 11.h3 dc4 12.Bc4) 8...0–0 9.0–0 Nc5 10.Qc2 Rc8 11.d4 Nce4 12.c5; B) 7.cd5 ed5 8.Nf3 (8.Bd3 Bd6 9.Ne2 0–0 10.0–0 g6 11.Nf4 Be5 12.Bd4) 8...Bd6 9.Be2 (9.Bd3 0–0 10.0–0 Re8 11.Qc2 Ne4 12.Be2) 9...0–0 (9...Nc5 10.0–0 0–0 11.Qc2 h6 12.Rac1) 10.0–0 Nc5 11.Qf5 Qd7 12.Qc2.

6.Rb1 Bd6 A) 7.Qc2 A1) 7...Qe7 A11) 8.Be2 Nbd7 (8...0–0 9.Nf3 Nbd7 10.0–0 g6 11.g3 e5 12.cd5 Nd5) 9.cd5 ed5 10.Nf3 Nc5 11.0–0 0–0 12.Nd4 g6; A12) 8.cd5 ed5 9.Nf3 Nbd7 10.Be2 Nc5 11.0–0 0–0 12.Nd4 g6; A13) 8.Nf3 Nbd7 9.Be2 (9.cd5 ed5 10.Be2 Nc5 11.0–0 0–0 12.Nd4 g6) 9...0–0 10.0–0 e5 (10...Rfd8 11.g3 h6 12.cd5 ed5) 11.cd5 Nd5 12.h4 N7f6; A2) 7...0–0 8.c5 Be7 9.Nf3 Nbd7 10.c6 bc6 11.bc6 Nc5 12.Bf6 gf6; A3) 7...Nbd7 A31) 8.cd5 ed5 9.Be2 0–0 10.Nf3 Nc5 11.0–0 Qe7 12.Nd4 g6; A32) 8.Be2 g6 (8...Qe7 9.cd5 ed5 10.Nf3 Nc5 11.0–0 0–0 12.Nd4 g6) 9.Nf3 0–0 10.0–0 Qe7 11.g3 dc4 12.Qc4 Rfe8; A33) 8.Nf3 0–0 (8...Qe7 9.cd5 ed5 10.Be2 Nc5 11.0–0 0–0 12.g3 g6; 8...g6 9.cd5 ed5 10.Be2 0–0 11.0–0 Qe7 12.Qb3 Rfe8; 8...h6 9.cd5 ed5 10.Be2 0–0 11.0–0 Nc5 12.Nd4 a6) 9.Be2 Qe7 10.0–0 e5 (10...g6 11.Rfe1 e5 12.cd5 Nd5) 11.cd5 Nd5 12.h4 N5f6; B) 7.cd5 ed5 B1) 8.Be2 0–0 (8...Nbd7 9.Nf3 0–0 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6; 8...a6 9.Qa4 0–0 10.Nf3 a5 11.0–0 Nbd7 12.Qc2 Qe7; 8...c5 9.bc6 Nc6 10.Nf3 0–0 11.g3 a5 12.0–0 Ne4) 9.Nf3 Nbd7 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6; B2) 8.Qc2 g6 (8...Nbd7 9.Be2 0–0 10.Nf3 Nc5 11.0–0 Qe7 12.Nd4 g6; 8...0–0 9.Nf3 Nbd7 10.Be2 Nc5 11.0–0 Qe7 12.Nd4 g6; 8...Qe7 9.Nf3 Nbd7 10.Be2 Nc5 11.0–0 0–0 12.Nd4 g6; 8...h6 9.Nf3 0–0 10.Be2 Nbd7 11.0–0 Qe8 12.Nd4 Nc5) 9.Nf3 0–0 10.Be2 Qe7 11.Bf6 Qf6 12.Qb3 c6; B3) 8.Nf3 0–0 (8...Nbd7 9.Be2 0–0 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6) 9.Be2 Nbd7 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6; C) 7.Nf3 C1) 7...0–0 C11) 8.Be2 h6 (8...Qe7 9.Qc2 Nbd7 10.0–0 g6 11.h3 e5 12.cd5 Nd5; 8...c5 9.0–0 Nbd7 10.Qc2 h6 11.g3 Re8 12.Rfc1 Qc7; 8...g6 9.Qc2 Nbd7 10.0–0 Qe7 11.g3 e5 12.cd5 Nd5) 9.0–0 Nbd7 10.Qc2 Qe7 11.cd5 Nd5 12.g3 f5; C12) 8.cd5 ed5 9.Be2 Nbd7 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6; C13) 8.Qc2 Nbd7 9.Be2 Qe7 (9...h6 10.0–0 Qe7 11.cd5 ed5 12.Nd4 g6) 10.0–0 e5 (10...h6 11.g3 Rfe8 12.Rfe1 e5) 11.cd5 Nd5 12.h4 N5f6; C2) 7...Nbd7 8.Qc2 (8.cd5 ed5 9.Be2 0–0 10.Qc2 Nc5 11.0–0 Qe7 12.Nd4 g6) 8...0–0 (8...Nc5 9.Be2 0–0 10.0–0 Re8 11.h3 h6 12.d3 a5) 9.Be2 Qe7 10.0–0 e5 (10...g6 11.h3 Ba3 12.Bd4 Bc5) 11.cd5 Nd5 12.Bc4 N5b6.

6.Rb1 Nbd7 A) 7.cd5 ed5 A1) 8.Nf3 Bd6 (8...Nc5 9.Be2 Bd6 10.0–0 0–0 11.Qc2 Qe7 12.Nd4 g6; 8...h6 9.Be2 Bd6 10.Qc2 Nc5 11.Nd4 0–0 12.0–0 a6) 9.Be2 0–0 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6; A2) 8.Be2 Bd6 (8...Nc5 9.Nf3 Bd6 10.Qc2 0–0 11.0–0 Qe7 12.Nd4 g6; 8...h6 9.Nf3 Bd6 10.0–0 Nc5 11.Nd4 Qd7 12.Nb3 Ne6) 9.f4 (9.Nf3 0–0 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6) 9...0–0 (9...Nc5 10.Nf3 0–0 11.0–0 Qe7 12.Nd4 Rfe8) 10.Nf3 Nc5 11.0–0 (11.Qc2 Qe7 12.0–0 Qe4) 11...Qe7 12.Nd4 Rfe8; B) 7.Qc2 Bd6 8.Nf3 (8.cd5 ed5 9.Nf3 0–0 10.Be2 Re8 11.0–0 Qe7 12.g3 Nc5) 8...0–0 (8...Qe7 9.cd5 ed5 10.Be2 Nc5 11.0–0 0–0 12.Nd4 g6; 8...Nc5 9.Be2 0–0 10.0–0 h6 11.h3 dc4 12.Bc4 Qe7) 9.Be2 Qe7 (9...g6 10.0–0 Qe7 11.h3 e5 12.cd5 Nd5) 10.0–0 e5 (10...Rfe8 11.g3 h6 12.Kg2 e5) 11.cd5 Nd5 12.Bc4 N5b6; C) 7.Nf3 C1) 7...Be7 C11) 8.Be2 0–0 (8...dc4 9.Bc4 Nb6 10.Be2 Qd5 11.Qc2 0–0 12.0–0 Bd6; 8...Bd6 9.Qc2 0–0 10.0–0 Qe7 11.g3 h6 12.cd5 ed5; 8...Nb6 9.cd5 Qd5 10.Qc2 0–0 11.0–0 Bd6 12.Bf6 gf6) 9.Qc2 Bd6 10.0–0 Qe7 11.g3 g6 12.cd5 ed5; C12) 8.Qc2 0–0 (8...Nc5 9.Be2 Bd6 10.Bd4 Qe7 11.Rc1 e5 12.Bc5 Bc5) 9.Be2 Bd6 10.0–0 Qe7 11.g3 g6 12.cd5 ed5; C13) 8.cd5 ed5 9.Be2 0–0 10.0–0 Bd6 11.Qc2 Nc5 12.Ng5 g6; C2) 7...Bd6 C21) 8.cd5 ed5 9.Be2 0–0 10.0–0 Nc5 11.Qc2 Qe7 12.Nd4 g6; C22) 8.Be2 Qe7 (8...h6 9.Qc2 0–0 10.cd5 Nd5 11.0–0 Qe7 12.g3 f5) 9.0–0 0–0 10.Qc2 Rfe8 11.h3 h6 12.Rfd1 Rad8; C23) 8.Qc2 0–0 (8...Qe7 9.cd5 ed5 10.Be2 Nc5 11.0–0 0–0 12.Nd4 g6; 8...Nc5 9.Bd4 Qe7 10.Rc1 e5 11.Bc5 Bc5 12.cd5 Ba3) 9.Be2 Qe7 10.0–0 e5 11.cd5 Nd5 12.Bc4 N5b6.

6.Rb1 Be7 7.cd5 Qd5 A) 8.Qc2 0–0 (8...Nbd7 9.Nf3 Qc5 10.Rc1 Qc2 11.Rc2 Bd6 12.Be2 0–0 13.0–0; 8...Qa2 9.Nf3 Nbd7 10.Bc4 Qa5 11.0–0 0–0 12.Bd4 Bc5 13.Bc3; 8...Qc5 9.Qc5 Bc5 10.Nf3 Nbd7 11.Be2 0–0 12.0–0 Bd6 13.Rbc1) 9.Bf6 (9.Nf3 Nbd7 10.Bc4 Qe4 11.Bd3 Qd5 12.0–0 Bd6 13.Bd4) 9...gf6 10.Nf3 Nd7 11.Bc4 Qh5 12.0–0 Bd6 13.Be2; B) 8.Nf3 B1) 8...0–0 9.Rc1 (9.Qc2 Nbd7 10.Bc4 Qe4 11.d3 Qg6 12.0–0 Bd6 13.Bd4) 9...Nbd7 10.Rc7 Rac8 11.Bc4 Qd6 12.Rc8 Rc8 13.Be2; B2) 8...Bd6 9.Qc2 Nbd7 10.Bc4 Qh5 11.0–0 0–0 12.h3 Rfd8 13.Rfe1; B3) 8...Qa2 9.Qc2 Nbd7 10.Bc4 Qa5 11.Bd4 Nc5 12.Ra1 Qb6 13.0–0; B4) 8...Nbd7 9.Qc2 (9.Rc1 Bd6 10.Bc4 Qh5 11.h3 0–0 12.0–0 h6 13.Qc2) 9...Qc5 10.Rc1 Qc2 11.Rc2 Bd6 12.Be2 0–0 13.0–0.

6.Rb1 Be7 7.Nf3 Nbd7 (7...0–0 8.Qc2 Nbd7 9.Be2 Bd6 10.0–0 Qe7 11.g3 g6) 8.Be2 (8.cd5 ed5 9.Be2 0–0 10.0–0 Bd6 11.Qc2 Qe7) 8...0–0 (8...dc4 9.Bc4 Nb6 10.Be2 Qd5 11.Qc2 Bd6) 9.0–0 Re8 (9...Nc5 10.Qc2 Bd6 11.cd5 ed5) 10.d4 (10.Qc2 Bd6 11.g3 Nc5) 10...h6 (10...Nb6 11.c5 Nc4) 11.a4 (11.c5 Ne4) 11...a5 (11...dc4 12.Bc1+=; 11...Ne4+=) 12.c5 (12.ba6 ba6 13.Ne5 Ne5 14.de5 Ne4+=) 12...Nh7 13.Qc2 Ng5 14.Ng5 Bg5 15.f4 Be7 16.Rbe1 (16.Bf3 Ra7+=) 16...Bh4 (16...f5 17.c6 bc6 18.Qc6+=) 17.g3 Be7 18.Bg4 (18.e4 Nf8+/–) 18...Nf6 (18...f5 19.Bh5 Rf8 20.c6 bc6 21.Qc6+=) 19.Bh3 Ne4 20.Kh1 b6 (20...f5 21.Ra1=) 21.f5 (better is 21.Bg2+=) 21...bc5? (better is 21...ef5 and Black is still in the game 22.Rf5 g6=) 22.fe6+– f6 23.Bf5 cd4 24.ed4 Nd6 25.Bg6 Rf8 26.Bc1 f5 27.g4 fg4 28.Qg2 Rf1 29.Rf1 Nc4? 30.Qg4 Bg5 31.Bg5 Qg5 32.Qg5 hg5 33.Rf7 Nd6 34.Rc7 Ne8 35.Rc5 Kf8 36.Bf7 Ke7 37.b6 Nd6 38.Rc7 Kf6 39.Rd7 Nf7 40.ef7 Ke6 41.Rc7 Rb8 42.Kg2 Kd6 43.Kg3 Ke6 44.Kg4 Rf8 45.Kg5 Kd6 46.Kg6 Rh8 47.Kg7 Rb8N 48.f8Q Rf8 49.Kf8 Ke6 50.Rf7 Kd6 51.b7 Kc6 52.b8R Kd6 53.Rb6# 1–0. Hoelldorfer,August – Sturm,Paul, Bayern–ch Seniors, 1996.

5.b5 Bb4

6.Nc3 0–0 7.Qb3 Ba5 (7...Be7 8.Nf3+=) 8.Nf3= c5 9.a4 (9.bc6 Nc6 10.cd5 ed5 11.Qb7 Nb4–/+) 9...d4 (9...Re8 10.d4+=) 10.Ne2 (10.ed4 cd4 11.Ne2 e5+=) 10...e5 (10...de3!? 11.fe3 Ne4+=) 11.Ne5 Re8 12.Nf3 Ne4 13.ed4 cd4 14.Ra3?? (14.Bd4 Nd2 15.Nd2 Qd4 16.Ra2–+) 14...d3!–+ 15.Qd3 Nd2 16.Nfd4 (16.Qd2 Bd2 17.Nd2–+) 16...Bd3 (16...Bd3 17.Kd1 Nc4 18.Rd3 Nb2 19.Kc2 Nd3 20.Kd3 Qd6–+) 0–1. Schmidtke,Wilfried (1700) – Sack,Thomas (1715), Landesliga Ost1, 2003.

6.cd5 Qd5

7.Nc3 Bc3 8.Bc3 0–0 9.Bf6 gf6 10.Qf3 Be4 (10...c6 11.Qd5 cd5 12.Rc1=) 11.Qg3 Kh8 12.Qf4 (12.f3 Rd8 13.d4 Bg6 14.Qc7 Nd7=) 12...Bg2 (12...Nd7!? 13.f3 Bd3=+) 13.Qf6+= Kg8 14.Bg2 Qg2 15.Rc1 (15.Ke2!? Nd7 16.Qf3 Qf3 17.Nf3+=) 15...Qh1= 16.Qg5 Kh8 17.Qf6 Kg8 18.Qg5 Kh8 19.Qf6 Kg8 20.Qg5 Kh8 ½–½. DEFFM – GuestQXVD, freechess.org, 2019.

7.Nc3 Bc3 8.Bc3 Nbd7 9.Nf3 Bd3 (9...0–0=) 10.Be2 (10.Bd3 Qd3 11.Qe2 Qd5=) 10...0–0 (10...Qb5! 11.Rc1 c6–/+) 11.a4 (11.Qb3 Qb3 12.ab3 Be2 13.Ke2 Nd5+=) 11...Nc5 (11...Be2 12.Qe2 e5 13.0–0=) 12.Bf6 gf6 13.0–0 Kh8 14.Nd4 (14.Ne1 Be2 15.Qe2+=) 14...Qg5 (better 14...Rg8!? 15.g3 Be2 16.Ne2 Nd3=) 15.Bd3+– Nd3 16.Qf3 (16.f4 Qd5+–) 16...Rg8 17.g3 (better 17.Qb7 c5 18.Ne2+=) 17...h5? (17...e5 18.Nb3 Rab8 19.Nc1+=) 18.Qe2 (18.Qb7 a6+–) 18...Ne5? (better 18...Nc5+–) 19.f4+– Qg6 (19...Qg4 20.fe5 fe5 21.Qg4 hg4 22.Nb3+–) 20.fe5 fe5 21.Nf3 e4 (21...f6 22.d4+–) 22.Nh4 (better 22.Ne5 Qh7 23.Nf7 Kg7 24.Rac1+–) 22...Qg5 23.Rf7 (23.Ng2 Rg7+–) 23...Qh4 24.Rc7?? (24.Qc4 Qg4+–) 24...Rg6? (better 24...Rg3 25.Kh1 Rf8+=) 25.Rac1 Rag8 26.Rc8?? (26.Qg2 Rg3 27.hg3 Rg3 28.Rc8 Kg7 29.R1c7 Kf6 30.Rf8 Ke5 31.Rb7 Rg2 32.Kg2 Qg4 33.Kf2 Qd1 34.Ra7 Qd2 35.Kf1 Qe3=) 26...e5?? (better 26...Rg3 27.Kh1 Rc8 28.Rc8 Rg8+=) 27.Rg8+– Rg8 28.Qf2 (28.Rc7 b6+–) 28...Qg5 (28...Qe7 29.Qf5 h4 30.Rc8 Rc8 31.Qc8 Kh7 32.Qf5 Kh6 33.Qe4 hg3 34.hg3+–) 29.Rf1 (better 29.Rc7!? Rg7 30.Qf8 Kh7 31.Rg7 Qg7 32.Qf5 Kh6 33.Qe4+–) 29...h4+– 30.Qf6 Qf6 31.Rf6 hg3 32.hg3 Rg3 33.Kf2 Rf3?? (better 33...Rg7+–) 34.Rf3+– ef3 35.Kf3 Kg7 36.Ke4 Kf6 37.d4 (better 37.Kd5 e4 38.b6 ab6 39.Kd6+–) 37...ed4 38.Kd4 Ke6 39.e4 b6 (39...Kd6 40.a5 Ke6 41.e5+–) 40.Ke3 (better 40.e5 Ke7+–) 40...Ke5 41.Kd3 (better 41.Kf3 Kd6+–) 41...Ke6 (41...Kf6 42.Ke2 Ke6+–) 42.Kd4 Kd6 43.e5 Ke6 44.Ke4 Kd7 45.Kd5 Kc7 46.e6 Kd8 47.Kd6 Ke8 1–0. GuestHLWR – GuestTLWS, freechess.org, 2018.

6.cd5 Nd5

7.Bg7+= Rg8 8.Bc3 Nc3 9.Nc3 c6 10.a3 Ba5 11.a4 Nd7 12.Nf3 (12.bc6 bc6 13.Nf3 e5+=) 12...Bg4 (12...c5 13.Rc1+=) 13.Be2 Qf6 (13...cb5!? 14.Nb5 Nf6+=) 14.Ne4+– Qb2?? (14...Qe7 15.bc6 bc6 16.Nd4 Be2 17.Qe2+–) 15.Rb1 (15.Nd6 Kf8 16.Nc4 Bd2 17.Ncd2 Bf3 18.Bf3 Nc5+–) 15...Qa2? (better 15...Qa3+–) 16.Nd6 Ke7 17.Nc4 (17.Nb7?! Bf3 18.Na5 Be2 19.Nc6 Ke8 20.Ke2 Qc4 21.d3 Qg4 22.Kd2 Qg2+–) 17...Bc7 (17...Bf3 18.gf3 Bd2 19.Nd2 Nb6+–) 18.Nb2 (better 18.Ra1 Bf3 19.gf3 (worse 19.Ra2 Bg2 20.Rf1 Bh2+–) 19...Qa1 20.Qa1 cb5 21.ab5+–) 18...Rad8 (18...Bf5 19.Bd3 Bd3 20.Nd3 Rg2 21.bc6 bc6 22.Rb7+=) 19.h3 (19.bc6 bc6 20.Nd4 Nb8+–) 19...Bh5 (19...Bf3 20.Bf3 Ne5 21.bc6=) 20.g4 (20.bc6 bc6 21.Nd4 Be2 22.Nc6 (22.Ke2?! Qd5+–; 22.Ne2?! Qd5 23.Qc2 Qg2=) 22...Kd6 23.Qc1+–) 20...Bg6+= 21.d3 (21.Bd3 Ne5 22.Ne5 Be5 23.Bg6 hg6=) 21...Qd5 (better 21...Ba5!? 22.Kf1 Bc3=) 22.e4+– Qc5 23.Nc4 Nf8? (better 23...e5+–) 24.0–0?? (better 24.d4 Rd4 25.Qd4 Qd4 26.Nd4 Be4 27.Kd2+–) 24...Be4=+ 25.d4?? (25.de4 Exploits the pin 25...Rd1) 25...Qg5?? (better 25...Qh5! 26.Nfe5 Qh3–+ (26...Bb1?! 27.Qb1 Rd4 28.bc6–+)) 26.Ng5+– Rg5 27.f4 (27.Rb2 cb5 28.Qc1 f6 29.Rb5 Rb5 30.ab5 Ke8+–) 27...Rg8 (27...Rgd5 28.Rc1+–) 28.Bf3 (better 28.bc6 Bb1 29.Qb1 bc6+–) 28...Bf3 (28...Bb1 29.Qb1 Rd4 30.bc6 b6 31.Qb4 Kd8+–) 29.Qf3 (29.Qf3 Rd4 30.bc6+–) 1–0. AleksandrNekhoroshik – Nkaplunov, lichess.org, 2021.

7.Bg7+= Rg8 8.Bd4 Nd7 (8...c5 9.Bb2+=) 9.Nf3+= Bc5 10.Bc5 (10.Nc3 Nb4 11.d3 e5 12.Bc5 Nc5 13.Ne5 Qf6+=) 10...Nc5= 11.a4 (better 11.d4 Nb4 12.Na3 Ncd3 13.Bd3 Nd3 14.Kf1=) 11...Bb1?? (better 11...Nb4 12.Na3 Ncd3 13.Bd3 Nd3 14.Kf1 Qf6–/+) 12.Qb1+– b6? (better 12...f5+–) 13.Qh7+– Rf8 14.Be2 (14.d4 Nb3 15.Rb1 Na5+–) 14...Qe7 (14...Qd6 15.Bc4+–) 15.0–0 0–0–0 16.d4 Nb7 (16...Rh8 17.Qc2 Nb7 18.Rfc1+–) 17.Ne5 Nb4 (17...Na5 18.Rac1+–) 18.Qb1 (18.Ng6 Qf6 19.Nf8 Rf8+–) 18...f6 (18...Na5 19.Rc1+–) 19.Nd3 (better 19.Ng6 Qd6 20.Nf8 Rf8 21.Qh7+–) 19...Nd3 20.Bd3 e5 21.de5 Qe5 (21...fe5 22.Qc2+–) 22.Be4 (22.Bf5!? Kb8+–) 22...Rh8 23.g3 Qh5 24.h4 Nd6 (24...Kb8 25.Rc1+–) 25.Bc6 f5 (25...Nc4 26.Qc2 Na5 27.Bg2+–) 26.Rd1 Qf3?? (26...Kb8 27.a5 Nc4 28.ab6 cb6 29.Rd7 Rd7 30.Bd7+–) 27.Qd3 (27.Bf3 f4 28.Rd6 Rd6 29.Qe4 fg3 30.Qa8 Kd7 31.Qh8 gf2 32.Kf2 Rd2 33.Ke1 Rg2 34.Rd1 Ke6 35.Bd5 Ke7 36.Qe5 Kf8 37.Qf6 Ke8 38.Bc6) 27...Ne4 28.Qd8?? (28.Qc2 Rdg8 29.Bd7 Kb8 30.Rac1 Rg3 31.fg3 Qe3 32.Kf1 Qf3 33.Ke1 Qg3 34.Ke2 Rh4 35.Qc7 Qc7 36.Rc7 Kc7 37.Kf3 Ng5 38.Kg2 Rg4 39.Kh2 Nf3 40.Kh1 Ra4 41.Bf5–+) 28...Rd8–+ 29.Rd8 Kd8 30.Rd1?? (30.Be4 fe4 31.Rc1–+) 30…Qd1 (30...Qd1 31.Kg2 Qc2 32.Be4 Qe4 33.Kg1 Qa4–+) 0–1. AleksandrNekhoroshik (1675) – korvova (1710), lichess.org, 2021.

5.b5 dc4

6.Bc4 a6 7.Nf3 =+.

6.Bc4 Be7 7.Nf3 Bg4 8.Be2 0–0 9.0–0 (9.Nc3 Qd6=) 9...a6= 10.a4 c6 (10...ab5 11.ab5 Ra1 12.Ba1=) 11.Nc3 Nd5 (11...ab5 12.ab5 Ra1 13.Ba1+=) 12.Qb3 (12.h3 Bf3 13.Bf3 Nd7+=) 12...Nc3 (12...Nd7!?+=) 13.Bc3+– Nd7 14.bc6 bc6 15.Qc4 Bf3 (15...Bh5 16.Rab1+–) 16.Bf3 (worse 16.gf3 Bf6+=) 16...Bf6 17.Qc6 (17.Rab1 Bc3 18.Qc3 Nf6+–) 17...Bc3 18.dc3 Rc8 19.Qa6 Rc3 (19...Ne5!?+–) 20.Rfd1+– Qe7?? (better 20...Qc7 21.a5 Ne5+–) 21.Qb7 Rd8 22.Bc6 1–0. DEFFM – GuestCPZG, freechess.org, 2018.

6.Bc4 Bb4

7.Qb3 Ba5 8.Nf3 Bb1 9.Rb1+= 0–0 10.0–0 Ne4 Increases the pressure on the backward pawn (10...Bb6 11.d4+–) 11.Be6! fe6? (better 11...Nc5 12.Qa3 Ne6 13.Qa5 a6+–) 12.Qe6+– (12.Qe6 Rf7 13.Qe4+–) 1–0. GuestVMZB – GuestNHLY, freechess.org, 2018.

7.Qb3 Ba5 8.Nf3+= Nbd7 9.Qa3 (9.0–0 0–0+=) 9...Bb6= 10.d4 c5 (10...Qe7!?=) 11.bc6+= bc6 12.0–0 c5 13.Nh4 (13.Nc3 Qe7+–) 13...Bb1 (13...Be4!?=) 14.Rab1+– 0–0 15.Nf3 Ne4 (15...cd4!? 16.ed4 Nd5+–) 16.d5+– Nd6 17.Qc3 Nf6 18.de6 Nc4 19.Qc4 fe6 (19...Qd5 20.Qd5 Nd5 21.ef7 Kf7 22.e4+–) 20.Qe6 Kh8 21.Ng5 Qc7 (21...Qe8 22.Qc4 Qe7 23.Rfd1+–) 22.Qh3 (22.Bf6!? gf6 23.Rfd1 Qg7+– (23...fg5?? 24.Rd7+–)) 22...Qd7 23.Bf6 (23.Qd7 Nd7 24.Rfd1 Nf6+–) 23...Qh3 24.Bg7! (24.gh3?! Rf6 25.Ne4 Rg6 26.Kh1 Re6+–) 24…Kg7 1–0. GuestLCSK – GuestCGKG, freechess.org, 2018.

6.Bc4 c6

7.a4 Be7 8.Nf3 Bd3 9.Qb3 Bc4 10.Qc4 0–0 11.0–0 c5 12.d4 Nbd7 13.dc5 Nc5 14.Nc3 Rc8 15.Rfd1 Qa5 16.Qe2 (better 16.Rac1!?=) 16...Nb3–/+ 17.Ba3? (better 17.Rab1 Rc3 18.Bc3 Qc3 19.Qb2 Qb2 20.Rb2–/+) 17...Ba3–+ (17...Rc3?! 18.Be7 Rfc8 19.Ra3=+; 17...Qc3?! 18.Be7 Na1 19.Bf8 Kf8 20.e4–+) 18.Ra3 Rc3 (better 18...Qc3 19.Qa2 Nc1 20.Rc3 Na2 21.Rc8 Rc8–+) 19.Qb2–/+ Qb4 (19...Ne4 20.Rb3 Qa4 21.Nd4–/+) 20.Nd4 Rd8 21.Rb1 1–0. GuestHWSD – GuestDXVX, freechess.org, 2017.

7.Ne2 Be7 (7...a6 8.a4=+) 8.h3 (8.Nd4 Bg6=) 8...0–0 9.0–0 Qb6. Zaichenko,Andrey – Geguchadze,Alexander, FICGS, 2008.

6.Bc4 Bd3

7.Bd3 Qd3 8.Bf6 gf6 =.

7.Qb3 Bc4

8.Qc4 Bd6 9.Nf3 =+.

8.Qc4 Nbd7 9.Nf3 Nb6 10.Qc2 Be7 11.0–0 0–0 12.Nc3 Nc4 13.a4 Nb2 14.Qb2 Qd3 15.Ne5 Qf5 16.d4 Bd6 17.f4 Ng4 (17...a6 18.ba6 ba6 19.Qe2+=) 18.Ng4 ½–½. De Kruif,K (2035) – Coenen,A (1915), Guernsey Open, Guernsey GCI, 2008.

8.Qc4 Be7 9.Nf3 a6 10.d4 ab5 11.Qb5 Nbd7 12.Nbd2 (12.Qb7? Rb8 13.Qc6 Rb2–+) 12...c6 13.Qb3 (worse is 13.Qb7 Rb8 14.Qc6 Rb2–/+) 13...0–0 14.0–0 (14.Qb7? Rb8 15.Qc6 Rb2–+) 14...Qc7 15.Rfc1 Ra6 16.Nc4 Rfa8 17.Nce5 Ne5 18.Ne5 ½–½. Fournier,Frederic – Ribeck Staffan, corr ICCF WT/H/0918, 1996.

8.Qc4 Qd5!?

9.Qc7 Qb5?? 10.Qc8 Ke7 11.Ba3 Qb4 12.Bb4.

9.Qc7 Bd6! 10.Qc8 Ke7 11.Qh8 Qg2 unclear.

9.Qc7 Nbd7 10.Nf3 Bd6 =.

9.Qd5 ed5 10.Bf6 gf6 11.Nc3 +/–.

9.Qd5 Nd5

10.a3 a6=+ 11.ba6 Ra6 (11...Na6 12.Nc3=+) 12.d4 (12.d3 Nd7 13.Kd2 Nc5=+) 12...Nc6 13.Nd2 Be7 14.Ngf3 Kd7 15.Nc4 f6 (15...Bf6 16.e4 Nf4 17.Rd1 Ng2 18.Kf1=+) 16.0–0 (16.e4!? Nf4 17.Bc1=) 16...Rha8 17.Rab1 Nb6 (17...b5 18.Ncd2=+) 18.Nfd2 (18.Nb6 Rb6 19.Nd2 Rba6=+ (< 19...Ba3 20.Nc4 Rb2 21.Nb2+=)) 18...Nc4–/+ 19.Nc4 Ra4 (19...Na7 20.Ra1–/+) 20.Rfc1 Na5 21.Na5 R4a5 22.Kf1 (22.e4 b6–/+ (22...Ba3?! 23.Ba3 Ra3 24.Rb7=)) 22...Kc8 (22...b6 23.Rc3–/+) 23.Ke2 (23.Rc3 Ba3 24.Ba3 Ra3 25.Ra3 Ra3–/+) 23...Ba3 24.Ba3 Ra3 25.Rb5 (25.Rc2 c6–/+) 25...Ra2 26.Kf3 Rd2 (26...c6 27.Rb3–/+) 27.Rbc5 c6 28.R5c2 Ra2 29.Rd2 Rd2 30.Ra1 b5 (30...Kb8 31.h4–/+) 31.Ra8 Kb7 32.Rg8 g6 33.Rg7 Kb6 34.Rh7 b4 35.Rh8 Kb5 36.Rb8 Kc4 37.Rc8 b3 38.Rc6 Kd3 39.Rb6 b2 40.g4 Kc2 41.Rc6 Kd1 42.Rb6 Kc1 (43.h4 b1Q 44.Rb1 Kb1–+) 0–1. Dopper,Johan – Velker, corr ICCF TT/SF/3, 1993.

10.Nc3 a6 A) 11.a4 A1) 11...ab5 12.Nd5 (12.ab5 Ra1 13.Ba1 Nd7 14.Nd5 ed5 15.Nf3 Bd6 16.Nh4) 12...ed5 13.ab5 Ra1 14.Ba1 Nd7 15.Ne2 Bd6 16.Bd4; A2) 11...Bc5 12.Nd5 ed5 13.Ne2 ab5 14.ab5 Ra1 15.Ba1 0–0 16.Nf4; A3) 11...Bd6 12.Nf3 (12.Nge2 0–0 13.Nd4 ab5 14.Nd5 ed5 15.Nb5 Rd8 16.Ke2) 12...0–0 13.Nd5 ed5 14.Ke2 Nd7 15.Bd4 Rfe8 16.Rhb1; B) 11.ba6 B1) 11...Ra6 12.Nd5 (12.Nf3 Rb6 13.0–0–0 Nc6 14.Nd5 ed5 15.d3 Bc5 16.Bc3) 12...ed5 13.Ne2 Bd6 14.Ng3 f6 15.Nf5 Kf7 16.Bc3; B2) 11...b6 12.Nd5 (12.Ke2 Na6 13.Nf3 Nab4 14.a4 f6 15.Nd5 ed5 16.Bc3) 12...ed5 13.Ne2 Na6 14.Nf4 c6 15.0–0 Nc5 16.Bd4; B3) 11...Na6 12.Nf3 (12.Ke2 Bd6 13.Nd5 ed5 14.Nf3 f6 15.Nd4 Nc5 16.Nf5) 12...Nab4 13.Ke2 f6 14.Nd5 Nd5 15.g3 Bd6 16.e4; C) 11.Nd5 ed5 12.a4 (12.ba6 Na6 13.Nf3 Nc5 14.Ke2 Bd6 15.Nh4 f6 16.Nf5) 12...Bd6 13.Nf3 ab5 14.ab5 Ra1 15.Ba1 Nd7 16.Nh4; D) 11.Nge2 D1) 11...Nb4 12.Kd1 (12.0–0 Nd3 13.Rfb1 Nd7 14.ba6 Ra6 15.Nb5 Kd8 16.Bd4) 12...Nd7 13.Nf4 Nc5 14.Ke2 Bd6 15.d4 Nd7 16.Ba3; D2) 11...Nc3 12.Nc3 Nd7 13.Ke2 Bd6 14.ba6 Ra6 15.Nb5 0–0 16.Rhc1; D3) 11...ab5 12.Nb5 Kd7 13.0–0 Nc6 14.Rfc1 Rg8 15.e4 Nf6 16.Rc4.

10.Nc3 Nb4 A) 11.Rb1 A1) 11...Nd7 12.Nf3 (12.Ke2 Nf6 13.Nf3 Rd8 14.d4 Nbd5 15.Ne5 Bd6 16.Nc4) 12...Nf6 13.Ke2 Rd8 14.d4 Nbd5 15.Kd3 Bd6 16.h3; A2) 11...Be7 12.Nf3 (12.Ke2 Nd7 13.Nf3 f5 14.Rhc1 Nc5 15.d4 Ncd3 16.Rd1) 12...Nd7 13.Ke2 h6 14.h3 Rd8 15.Rhc1 Nc5 16.d4; A3) 11...a6 12.Ke2 ab5 13.Nb5 N8a6 14.Nf3 c6 15.Nc3 Nc5 16.d4; B) 11.Ke2= B1) 11...Bd6 12.Ne4 (12.Nf3 Nd7 13.Ne4 Nd5 14.Rac1 f5 15.Nd6 cd6 16.Bg7) 12...Nd7 13.Nf3 Nd5 14.Rac1 f5 15.Nd6 cd6 16.Bg7; B2) 11...Nd7 12.Nf3 (12.Ne4 a6 13.a3 Nd5 14.ba6 Ra6 15.Nf3 Be7 16.Bd4) 12...Be7 13.Ne4 0–0 14.Rac1 Nd5 15.Ne5 Rfd8 16.Rc4.

10.Nc3 Nc3 11.dc3 A) 11...Nd7 12.Nf3 (12.0–0–0 a6 13.ba6 Ra6 14.Kb1 Bd6 15.Nf3 0–0 16.Rd4) 12...a6 13.a4 ab5 14.ab5 Ra1 15.Ba1 Bc5 16.Ke2; B) 11...a6 12.a4 (12.c4 Nd7 13.Nf3 Nb6 14.ba6 Ra6 15.Be5 Nc4 16.Bc7) 12...c6 13.c4 Bb4 14.Ke2 ab5 15.cb5 cb5 16.ab5.

10.Nc3 Nc3 11.Bc3 Nd7 (11...a6 12.Rb1= (12.a4 ab5 13.ab5 Ra1 14.Ba1 c6 15.bc6 Nc6 16.Ke2; 2.ba6 Na6 13.Nf3 Bd6 14.Ke2 Nc5 15.Rhb1 b6 16.Bd4) 12...ab5 13.Rb5 b6 14.Rb2 Nc6 15.Nf3 Bd6 16.0–0; 11...Bd6 12.Nf3 (12.Ke2 Nd7 13.Nf3 f6 14.Rab1 Kf7 15.Rhc1 e5 16.Nh4) 12...Nd7 13.Ke2 f6 14.Rab1 Kf7 15.Rhc1 e5 16.Nh4) 12.Nf3 (12.Ke2 Bd6 13.Rb1 f6 14.Nf3 Kf7 15.Rhc1 a6 16.Bb4) 12...a6 (12...Bd6 13.Ke2 f6 14.Rab1 Kf7 15.Rhc1 e5 16.Nh4) 13.a4 (13.ba6 Ra6 14.Ke2 f6 15.Rhb1 Nc5 16.Rb2) 13...Be7 (13...ab5 14.ab5 Ra1 15.Ba1= Bd6 16.Bc3) 14.Ke2+= Bf6 (14...f6 15.Rhb1= (15.ba6 Ra6 16.Rhb1) 15...a5 16.Rc1; 14...0–0 15.Rhc1 Bd6 16.Rcb1) 15.Bf6 Nf6 16.Rhc1 (16.ba6+= 0.32) 16...Kd8 17.Ne5 Rf8 18.Ra3 (18.d3 Nd5 19.ba6 Ra6+=) 18...ab5= 19.Rd3 Kc8 20.ab5 Nd5 21.g3 (21.Rd4=) 21...f6 (better is 21...f5!?=) 22.Nc4+/– Kb8 23.e4 Nb4 24.Rd7 Rg8 (24...g6 25.Rh7 Na2 26.Rc2+–) 25.Rb1 (25.b6 cb6 26.Nd6 Ra4+–) 25...Ra4+/– 26.b6 Na6 27.bc7 Nc7 28.Nd6 Ra7 29.Rc1 (better is 29.d4+/–) 29...Na6?? (better is 29...b6+/–) 30.Rg7!!+– Rd8 (30...Rg7 31.Rc8 Mate attack) 31.Rd7!! Rg8 (31...Rd7 32.Rc8 Mate attack) 32.Rh7 b6 33.Ra7 Ka7 34.Rc6 (34.d4 Nb4+–) 34...Nc5 (34...Nb8 35.Rc7 Ka6 36.Rc1+–) 35.d4 Na4 (35...Nb3 36.Nc8 Ka8 37.Ke3+–) 36.Rc4 (36.Rc4 b5 37.Nb5 Kb6 38.Nc7+–) 1–0. Sokolski,Alexei – Romanovsky,Pyotr, Lvov, 1947.

10.Nc3 Bd6 A) 11.Nf3 A1) 11...Nf6 12.Ng5 (12.Ke2 Nbd7 13.a4 a6 14.Ba3 Ba3 15.Ra3 Ke7 16.Rb1) 12...h6 13.Nge4 Nbd7 14.0–0 Ke7 15.Rfc1 Bb4 16.Rab1; A2) 11...Nc3 12.Bc3 (12.dc3 a6 13.c4 0–0 14.Ke2 Nd7 15.a4 Rfd8 16.Rhd1) 12...Nd7 13.Ke2 f6 14.Rab1 Kf7 15.Rhc1 a5 16.d3; A3) 11...Nd7 12.Ke2 (12.0–0 0–0 13.Nd4 N5f6 14.f4 a6 15.a4 Nb6 16.d3) 12...0–0 13.Nd5 ed5 14.Bd4 Rfe8 15.Rhc1 a6 16.a4; B) 11.Ke2 B1) 11...Nd7 12.Nf3 (12.Nh3 0–0 13.Ne4 a6 14.Nd6 cd6 15.e4 N5f6 16.ba6) 12...N5f6 13.a4 Ke7 14.Ba3 h5 15.d4 h4 16.a5; B2) 11...Nf6 12.Nf3 (12.a4 Nbd7 13.Nf3 Ke7 14.Ba3 h5 15.d4 h4 16.a5) 12...Nbd7 13.a4 Ke7 14.Ba3 Rhc8 15.Rhc1 Ba3 16.Ra3; B3) 11...0–0 12.Nf3 (12.Nd5 ed5 13.Nf3 Nd7 14.Bd4 Rfe8 15.a4 a6 16.Rhb1) 12...Nd7 13.Nd5 ed5 14.Bd4 Rfe8 15.Rhc1 a6 16.a4; C) 11.f4 C1) 11...0–0 12.Nf3 (12.Nd5 ed5 13.Nf3 Nd7 14.Nd4 g6 15.Ke2 Rfe8 16.Kf3) 12...a6 13.Nd4 Nf6 14.Ke2 Bc5 15.Nb3 Bb4 16.a4; C2) 11...Nf6 12.Nf3 (12.Ke2 Nbd7 13.Nf3 0–0 14.a4 Rfe8 15.Ba3 Ba3 16.Ra3) 12...Nbd7 13.Kd1 0–0 14.Kc2 a6 15.a4 Rfe8 16.Rhf1; C3) 11...a6 12.Nd5 (12.Nge2 0–0 13.Nd5 ed5 14.Nd4 Re8 15.Kf2 Nd7 16.Nf5) 12...ed5 13.Nf3 Nd7 14.Nd4 f6 15.0–0 ab5 16.Nb5; D) 11.Nd5 ed5 12.Ne2 (12.Nf3 Nd7 13.Nd4 g6 14.a4 Ne5 15.Ke2 Kd7 16.Bc3) 12...Nd7 13.Nd4 Nc5 14.Ke2 Na4 15.Rab1 Kd7 16.Ba1.

10.Nc3 Nd7 A) 11.Nd5 ed5 12.Nf3 (12.Ne2 Bd6 13.Nf4 Bf4 14.ef4 f6 15.0–0 Nc5 16.Rfe1) 12...a6 13.ba6 Ra6 14.0–0 f6 15.Rfb1 Kf7 16.Bc3; B) 11.Nf3 B1) 11...Bd6 12.Ke2 (12.Nd5 ed5 13.Rb1 a6 14.Nd4 f6 15.Bc3 ab5 16.Nb5) 12...0–0 13.Nd5 ed5 14.Bd4 Rfe8 15.a4 a6 16.Rhb1; B2) 11...N5f6 12.Ke2 (12.0–0 Bd6 13.a4 0–0–0 14.Ne2 Nc5 15.Bf6 gf6 16.Ned4) 12...Be7 13.a4 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3; B3) 11...a6 12.ba6 (12.Nd5 ed5 13.a4 f6 14.Ke2 Bd6 15.Bd4 ab5 16.ab5) 12...Ra6 13.0–0 Rg8 14.Rfc1 c6 15.a4 Nb4 16.Ba3; C) 11.Nge2 C1) 11...N5f6 12.Kd1 (12.d4 a6 13.a4 ab5 14.Nb5 Kd8 15.0–0 c6 16.Nbc3) 12...Bd6 13.Kc2 0–0 14.f4 e5 15.d4 ef4 16.Nf4; C2) 11...Bd6 12.Nd5 (12.Nd4 N5f6 13.Ke2 0–0 14.a4 Rfd8 15.a5 Ne5 16.Ba3) 12...ed5 13.Ng3 Be5 14.d4 Bg3 15.hg3 a6 16.a4; C3) 11...Nb4 12.0–0 (12.Kd1 Nd3 13.Kc2 Nf2 14.Rhf1 Ng4 15.h3 Nge5 16.Ne4) 12...Nd3 13.Rab1 Nf6 14.Ng3 Be7 15.Nce4 Ne4 16.Ne4; D) 11.Ke2 D1) 11...Bd6 12.Nf3 (12.a4 f6 13.Nf3 Nc3 14.Bc3 Kf7 15.d4 a6 16.Kd3) 12...0–0 13.Nd5 ed5 14.Bd4 a6 15.a4 Rfe8 16.Rhb1; D2) 11...N5f6 12.Nf3 (12.a4 Nc5 13.Nf3 Nb3 14.Rab1 Rd8 15.Na2 Nc5 16.Bf6) 12...Bd6 13.a4 a5 14.Ng5 h6 15.Nge4 Ke7 16.Rac1; D3) 11...a6 12.Nf3 (12.ba6 Ra6 13.Nf3 Bc5 14.Nd5 ed5 15.Rhc1 Rg8 16.Be5) 12...ab5 13.Nb5 f6 14.Nfd4 Nc5 15.Kf3 f5 16.Nc3.

10.Nc3 Nf6 A) 11.Nf3 A1) 11...Nbd7 12.Ke2 (12.a4 Bb4 13.Ke2 h5 14.Kd3 0–0 15.Kc2 a6 16.Rhb1) 12...Bd6 13.a4 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3; A2) 11...Bb4 12.Rc1 (12.Na4 Nbd7 13.Ke2 a6 14.Bf6 Nf6 15.b6 c6 16.Ne5) 12...Nbd7 13.0–0 Bd6 14.d3 a6 15.ba6 Ra6 16.Nb5; A3) 11...Bd6 12.Ke2 (12.a4 Nbd7 13.Ke2 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3) 12...Nbd7 13.a4 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3; B) 11.Ke2 B1) 11...Nbd7 12.Nf3 (12.a4 a6 13.Nf3 Bd6 14.ba6 Ra6 15.Nb5 Ke7 16.Rhc1) 12...Bd6 13.a4 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3; B2) 11...Be7 12.Nf3 (12.a4 Nbd7 13.Nf3 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3) 12...Nbd7 13.a4 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3; B3) 11...Bd6 12.Nf3 (12.a4 Nbd7 13.Nf3 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3) 12...Nbd7 13.a4 0–0 14.Ba3 Ba3 15.Ra3 e5 16.d3; C) 11.Nh3 C1) 11...a6 12.0–0 (12.Ke2 Nbd7 13.ba6 Ra6 14.Nb5 Rb6 15.Bf6 gf6 16.Rab1) 12...Bd6 13.Ng5 Nbd7 14.Rfc1 0–0 15.ba6 Ra6 16.Nb5; C2) 11...Bd6 12.Ng5 (12.Ke2 h6 13.f4 Nbd7 14.Nf2 a6 15.a4 Nc5 16.Nd3) 12...h6 13.Nge4 Nbd7 14.Ke2 Ke7 15.Rhc1 Rac8 16.a4; C3) 11...Nbd7 12.Ke2 (12.0–0 a6 13.ba6 Ra6 14.Nb5 Rb6 15.Bf6 gf6 16.Rab1) 12...Be7 13.Ng5 0–0 14.a4 a6 15.h4 h6 16.Nf3; D) 11.a4 D1) 11...Bb4 12.Nf3 (12.Ke2 Nbd7 13.Nf3 Ke7 14.Ba3 Ba3 15.Ra3 h5 16.a5) 12...Nbd7 13.Ke2 0–0–0 14.d4 h6 15.a5 Bc3 16.Bc3; D2) 11...Bd6 12.Nf3 (12.Ke2 Nbd7 13.Nf3 a5 14.ba6 Ra6 15.Nb5 Ke7 16.Rhc1) 12...Nbd7 13.Ba3 Rc8 14.0–0 Nb6 15.d3 Nbd5 16.Nd5; D3) 11...Nbd7 12.Nf3 (12.Ke2 a6 13.Nf3 Bd6 14.Ba3 Ba3 15.Ra3 Ke7 16.Rb1) 12...Bb4 13.0–0 Nc5 14.Ne2 Nd3 15.Bd4 Bd6 16.Nc1.

6.Bc4 Bd6

7.Qf3 Be4 8.Bf6 Qf6 9.Qf6 gf6 10.f3 =.

7.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 Nbd7 7.b5 Bd6).

7.Bf6 Qf6 8.d4 –/+.

6.Bc4 Nbd7

7.d3 =+.

7.Nf3 Nb6 8.Be2 =+.

7.Nf3 h6 8.0–0= Rc8 (8...Nb6 9.Be2=) 9.d4 (9.Nc3 Nb6 10.Be2 Bd3=) 9...c5 (9...Bd6 10.Qa4=) 10.bc6 (10.Qa4 Nb6 11.Qb3 cd4–/+) 10...Rc6 11.Nbd2 Bd6 12.Ne5 (12.Qb3 Rb6 13.Bb5 a6 14.Bd7 Nd7–/+ (< 14...Kd7 15.Qa4 Ke7 16.Ba3=)) 12...Rc8 (12...Rb6 13.Nb3=) 13.Bb5 (13.Qa4 Ne4 14.Ne4 Be4+/–) 13...0–0 14.e4 Bh7 15.Nd7 Nd7 16.Nc4 Bb8 (16...Be7 17.Qf3+=) 17.Ba3 (better is 17.Qf3+=) 17...a6 (better is 17...Be4 18.Bf8 Qf8=) 18.Bd7+/– Rc4 19.Bf8 Kf8? (19...Qd7 20.Qd3 Qc7–/+) 20.Qd3= b5 21.Be6 fe6 22.Rad1 Qh4 23.Qf3 Kg8–+ 24.e5 Be4 25.Qe3 Bd5 26.Rd2 Ba7 27.Rfd1 Ra4 28.Qc3 Qe4 29.f3 Qe5 30.a3 Rc4 31.Qb2 Qf4 32.Rd3 e5 33.Kh1 e4 34.fe4 Be4 35.Qd2 Bb8 36.Qf4 Bf4 (37.d5 Bd3–+) 0–1. Dopper,Johan – Gross,Wilhelm, corr SOK–93–95, 1993.

5.b5 c6

6.a4 Qa5 7.Qb3 Bd6 (7...Nbd7 8.Bf6 gf6 9.Nc3=+) 8.Nf3 (8.bc6 bc6 9.c5 Bc5 10.Bf6 gf6=) 8...h6 (8...Nbd7 9.Bf6 Nf6 10.bc6 bc6 11.Qb7=+) 9.Nc3 (9.bc6!? bc6 10.cd5 Nd5 11.Bg7+=) 9...0–0 (9...Nfd7 10.d4 Qb4 11.Qb4 Bb4 12.cd5 cd5 13.a5=) 10.h3 (10.Nh4 Be4=) 10...Nbd7=+ 11.d4 (11.bc6 bc6 12.Nd4 Nc5=+) 11...Ne4 (11...c5 12.Rc1=+) 12.g4 (12.c5 Bc7=) 12...Bh7 (12...Bg6 13.Rc1=+) 13.c5 Be7 (13...Bc7 14.Bd3=+) 14.Rc1 (better 14.Bd3=+) 14...b6 (better 14...Rae8=+) 15.bc6+– Ndf6 (better 15...Nb8 16.Qb5 Rc8+–) 16.Ne5?? (better 16.Qb5+–) 16...bc5=+ 17.Qb5 Qb6 (17...Qc7!? 18.Qb7 Qd6 19.Ne4 Ne4=) 18.Qb6 (18.Ne4 Be4 19.f3 Bh7+–) 18...ab6+= 19.Ne4 Be4 20.f3 Bh7 21.Ra1 (21.Bb5 c4+–) 21...Bd6 (21...c4 22.Bc3=) 22.f4?? (better 22.dc5!? bc5 23.Bb5+–) 22...Rfc8 (22...c4!? 23.Bc4 dc4 24.Nc4 Bc7–/+) 23.Bb5 (23.dc5 Bc5 24.Bd4 Bb4 25.Kf2 Ne4 26.Kg1 Nc5=) 23...Ne4 (23...Be4 24.Rg1=) 24.0–0 (better 24.Nd7 Bc7 25.dc5 bc5 26.Rh2=) 24...Kf8?? (better 24...c4=+) 25.Nd7+– Ke7 26.Nb6 Bc7 (26...c4 27.Rfc1+–) 27.Nc8 Rc8 28.dc5 Nc5 (28...f6 29.Rfd1+–) 29.Bd4 (29.Bg7 Nb3 30.Ra3 Nd2+–) 29...Ne4 (29...Nb3 30.Bg7 Na1 31.Ra1+– (worse 31.Ba1 f6+–)) 30.a5 (30.Bg7 Bb6 31.Rfe1 Nd6+–) 30...Ra8 (30...Nd2 31.Bg7 Nf1 32.Kf1+– (32.Rf1?! Ba5 33.Ra1 Bb6+–)) 31.a6 (better 31.Bg7 Ra5 32.Ra5 Ba5 33.Bh6 Bb6+–) 31...Kd6 (31...f6 32.Kg2+–) 32.a7 (32.Bg7!? f6 33.Ra3 Bb6+–) 32...Nd2 33.Rfd1 (better 33.Ba6 Ra7 34.Ba7 Nf1 35.Rf1 Kc6+–) 33...Ne4?? (33...Nf3 34.Kf2 Nd4 35.Rd4 Bb6+–) 34.Kg2 f5 (34...f6 35.Ba6 Kc6 36.Rdc1 Kd6 37.Bb7 Ra7 38.Ra7+–) 35.Bg7 (35.Ba6 Ra7 36.Ba7 fg4 37.hg4 Nf6+–) 35...fg4 36.Be5 (36.Be5 Ke7 37.Bc7+–) 1–0. afsharian – tiagosan, lichess.org, 2018.

6.a4 a6 7.Nc3 Bb4 8.Qb3 Be7 9.bc6 bc6 (9...Nc6 10.cd5 (10.Qb7?? Na5 11.Qa8 Qa8–+) 10...ed5 A) 11.Qb7? Na5 12.Bb5 Kf8 (worse is 12...ab5 13.Qb5 Bd7 14.Qe2–+) 13.Qa6 Ra6 14.Ba6 Nb3–+; B) 11.Nf3+=) 10.Qb7 (10.Nf3 Ra7=) 10...Nbd7+= 11.Qc6? (11.Ba3 Ba3 12.Ra3 0–0–/+) 11...0–0 (11...Rb8!? 12.Nd5 Rb2 13.Ne7 Ke7 (13...Qe7?! 14.Qc8 Qd8 15.Qd8 Kd8 16.d4–+) 14.Qa6 Ne4–+) 12.a5 (12.Ba3 Ba3 13.Ra3 Qb8–+) 12...Rb8 (12...Qb8!? 13.Ra2 Bc2–/+) 13.Nd1+= Bc2 (13...dc4 14.Qc4 (worse is 14.Qa6 Nc5 15.Qc4 Nb3–+; 14.Bc4?? Be4 15.Qa6 Bg2–+) 14...Rb4 15.Qc1= (15.Qa6? Nc5 16.Qa7 Rb7 17.Qb7 Nb7–+)) 14.Bc3 (14.cd5 Bd1 15.Bf6 Nf6 16.Rd1 Nd5 17.Qa6 Ra8=) 14...Nc5 15.Bf6 gf6 (15...Bf6 16.Rc1 Bd1 17.Qc5+= (17.Rd1? Qa5 18.cd5 Rfc8–+)) 16.cd5 ed5 (16...Rc8 17.Qb6 Qd5 18.Nc3= (18.Ba6?? Qg2 19.Nb2 Rc6 20.Qc6 Qc6–+)) 17.Ba6 (17.Nc3 d4 18.ed4=) 17...Na6?? (17...d4 18.d3 Bd1 19.Kd1 de3–+) 18.Qc2+– Nb4 19.Qf5 Rc8 (19...Qc8 20.Qc8 Rfc8 21.Ke2+–) 20.Nc3 d4 (20...Kh8 21.Nf3+–) 21.ed4 Qd4 22.Nf3 (22.Nge2!? Qd6 23.Qg4 Kh8+–) 22...Qc4 (22...Nd3 23.Ke2 Qf2 24.Kd3 Rfd8 25.Nd5 Rc5+=) 23.Ra4?? (23.Qe4 Qa6 24.Qg4 Kh8+–) 23...Qb3?? (23...Rfe8 24.Qb1 Rcd8–/+) 24.Nd4+– Qb2? 25.0–0 Qd2 26.Qg4 Kh8 27.Nf5 Rg8 28.Qe4 Bc5 29.Qf3 Nd3 30.Ne4 Qc2 31.Raa1?? Ne5= 32.Qf4 Rg4 33.Qh6? Qe4?? 34.Qf6+– Kg8 35.Nh6 Kf8 36.Ng4 Qg4 37.Qe5 Bd4 38.Qd6 Kg8 39.Rad1 Bc5 40.Qg3 Qg3 41.hg3 Ra8 42.Ra1 1–0. Romischke,W – Buschner, 1984.

6.a4 dc4 7.Bc4 Bd6 8.d3 =+.

6.a4 Bd6 7.Nf3 h6 8.Be2 Nbd7 9.0–0 0–0 10.Nh4 Bh7 11.Nf3 Rc8 (11...cb5 12.ab5 dc4 13.Na3=) 12.Nc3 (12.Na3 Qc7=) 12...Bc7 (12...dc4 13.Bc4 cb5 14.Bb5=+) 13.Nd4 (13.bc6 bc6 14.d4 Re8=) 13...e5 (13...c5 14.Nf3=+) 14.Nf3 (14.bc6 ed4 15.cd7 Qd7 16.Nb5= (worse 16.ed4 dc4 17.d3 Qd4 18.dc4 Qe5=+)) 14...e4=+ 15.Nd4 (15.Ne1 dc4 16.bc6 bc6 17.Bc4 Rb8=+) 15...Ne5 (15...c5!? 16.Nb3 dc4 17.Bc4 Ne5–/+) 16.bc6= (16.bc6 Nc6 17.Ncb5=). AhmedSultanov (1665) – arya1300 (1705), lichess.org, 2019.

6.a4 Nbd7 7.d4 Bb4 8.Bc3 Qa5 9.Qb3 Bc3 10.Qc3 Qc3 11.Nc3 0–0 12.c5 (12.bc6 bc6 13.f3 Bg6=) 12...Rfc8 (12...a6 13.Ra2=) 13.Nf3 h6 14.Nd2 (14.a5 cb5 15.Nb5 Ne4+=) 14...Ne4 (14...a6!? 15.ba6 ba6=) 15.Nde4 de4 16.Be2 (16.a5 e5+–) 16...Nf6 17.0–0 (17.h3 e5+=) 17...Nd5 18.Nd5 ed5 (worse 18...cd5 19.a5+–) 19.h3 b6 20.g4 Bd7 21.f3 (better 21.Rfc1+=) 21...f5?? (21...bc5!? 22.bc6 Rc6=) 22.gf5 (better 22.bc6!? Rc6 23.Bb5+–) 22...Bf5+= 23.Kh2 (better 23.fe4!? Bh3 24.Rfc1 de4 25.bc6 Rc6 26.Bc4 Kf8 27.Kh2+=) 23...bc5=+ 24.dc5 (24.fe4 Be4 25.Bg4 Rc7 26.dc5 cb5 27.ab5 Rc5=+) 24...cb5 25.ab5 Rc5 26.fe4 Be4 27.Bf3 (better 27.Rfc1!? Rc1 28.Rc1–/+) 27...Rb5 28.Be4 de4 29.Rf4 Rb4 (better 29...Re5–+) 30.Rg1? (30.Ra6!?–+) 30...Rf8 (30...a5 31.Rd1–+) 31.Rfg4 (31.Rf8 Kf8 32.Rf1 Ke7–+) 31...Rb2 (31...Rf2 32.Kh1 Rf7 33.Ra1–+) 32.Kh1 (32.R1g2 Rg2 33.Kg2 Re8–+) 32...Rff2 (better 32...Rf7!? 33.Re4 Rf3 34.Ra1 Rh3 35.Kg1 Rg3 36.Kf1 Rf3 37.Kg1–+) 33.Rg7 Kh8?? (better 33...Kf8 34.Rg8 Ke7–/+) 34.R7g2 (34.Rg8 Kh7 35.R1g7) 34...Rg2–+ 35.Rg2 Rg2 36.Kg2 Kg7 37.Kf2 Kf6 38.Kg3 (38.Ke2 Kg5 39.Kd2 Kh4–+) 38...Kf5 39.Kh4 a6 40.Kh5 a5 41.Kh6 a4 42.h4 a3 43.h5 (43.Kh7 a2 44.Kh6 a1Q 45.Kh7 Kf6 46.Kh6 Qg1 47.h5 Qg7) 43...a2 (43...Kf6 44.Kh7 a2 45.Kg8 a1Q 46.h6 Qg1 47.Kf8 Qg6 48.h7 Qf7) 44.Kh7 (44.Kg7 a1Q 45.Kf7 Qa7 46.Kg8 Kf6 47.h6 Kg6 48.h7 Qg7) 44...a1Q 45.h6 (45.Kg8 Qa7 46.Kh8 Kf6 47.h6 Kg6 48.h7 Qh7) 45...Qa7 46.Kg8 (46.Kh8 Kg6 47.h7 Qh7) 46...Qe3 (46...Kg6 47.h7 Qg7) 47.h7 (47.Kf7 Qa7 48.Kf8 Kf6 49.Kg8 Kg6 50.h7 Qg7) 47...Qg5 (47...Qg3 48.Kf8 Qb8 49.Kg7 Qa7 50.Kg8 Kg6 51.h8N Kf6 52.Nf7 Qf7 53.Kh8 Qg7) 48.Kf7 Qf6 49.Kg8 Qe6 (49...Ke6 50.h8N Qh6 51.Nf7 Qg6 52.Kh8 Kf6 53.Nd6 Qg7) 50.Kg7 Qe7 51.Kg8 Qh7 (51...Kg6 52.h8N Kf6 53.Nf7 Qf7 54.Kh8 Qg7) 52.Kh7 e3 53.Kh6 (53.Kg7 e2 54.Kf7 e1R 55.Kg7 Re7 56.Kf8 Kf6 57.Kg8 Re8 58.Kh7 Rf8 59.Kh6 Rh8) 53...e2 54.Kg7 e1R (54...e1Q 55.Kf7 Qe4 56.Kg7 Qe7 57.Kh6 Qd7 58.Kh5 Qh7) 55.Kf7 Re6 56.Kg7 Ra6 (56...Re7 57.Kf8 Kf6 58.Kg8 Re8 59.Kh7 Rf8 60.Kh6 Rh8) 57.Kf7 Ra7 58.Ke8 Kf6 (58...Ke6 59.Kd8 Rf7 60.Kc8 Kd6 61.Kb8 Kc6 62.Ka8 Kb6 63.Kb8 Rf8) 59.Kd8 Ke6 60.Kc8 Kd6 61.Kb8 Rh7 (61...Rc7 62.Ka8 Kc6 63.Kb8 Kb6 64.Ka8 Rc8) 62.Kc8 Rg7 63.Kb8 Kc6 64.Ka8 Kb6 65.Kb8 Rg8 0–1. afsharian – Molenga (1630), lichess.org, 2019.

6.Nc3 Bd6 7.Nf3 =+.

6.Nc3 Be7 7.Qb3 (7.Nf3 0–0=+) 7...0–0 8.Nf3 dc4 9.Bc4 cb5 10.Nb5 (10.Bb5 Nbd7=+) 10...a6 (10...Nc6 11.Be2=+) 11.Nbd4= b5 (11...Be4 12.Ng5 Bd5 13.Bd5 Qd5 14.Qd5 Nd5 15.Ngf3=) 12.Nf5 ef5 13.Be2 Nc6 (13...Ne4 14.Rd1+=) 14.0–0 Qd5 (14...Rc8 15.Rfc1+=) 15.Qd5 (15.Bf6 Qb3 16.ab3 Bf6+=) 15...Nd5+= 16.d4 (16.Rfc1 Rfc8+=) 16...Rfc8 17.Rfc1 (17.Bd3 g6=) 17...Bd6 (17...Ncb4!? 18.a3 Rc2 19.Rc2 Nc2=) 18.Nd2+= Nce7 19.Nb3 Ra7 (19...Kf8 20.Nc5+=) 20.Rc8+/– Nc8 21.Rc1 Rc7 (21...Ncb6 22.Bf3+/–) 22.Rc7 Nc7 23.Bf3 (23.Nc5 Nb6+=) 23...Nb6+= 24.Kf1 (24.Na5 Bb4 25.Nc6 Bd6+=) ½–½. Zylla,Johannes – Harbusch, BS–MK Kreisliga, 1993.

6.cd5 Nd5 7.Nf3 Nb4 =+.

6.Nf3 Bd6 =+.

6.a4 Bb4

7.Qb3 Ba5 8.Ba3 dc4 9.Qc4?? (9.Bc4 Bb1 10.Qb1 Bd2 11.Kf1–/+) 9...cb5 (9...Bb1 10.Bb4 Bf5 11.Ba5 Qa5 12.Qc3 Qc3 13.dc3–+) 10.ab5?? (10.Qb5 Nbd7 11.Nc3=+ (11.Qb7? Rb8 12.Qa7 Bb1–+)) 10...Bb1–+ 11.Rb1 (11.Bb4 Bb4 12.Qb4–+) 11…Qd2 0–1. AleksandrNekhoroshik (1675) – Thommy547 (1610), lichess.org, 2021.

7.Nf3 h6 8.Be2 0–0 9.0–0 Nbd7 (9...dc4 10.Bc4 cb5 11.ab5=) 10.Nd4 Bb1 11.Rb1 c5 12.Nf3 Qa5 13.d4 (13.Qc2 Rfd8=) 13...Rac8 14.dc5 Rc5 (14...Bc5 15.Rc1=) 15.Bd4 Rcc8 16.Ne5 (16.Qb3 Be7=) 16...Rfd8 (16...Ne5 17.Be5 dc4 18.Bf6 gf6 19.Qd4=) 17.cd5 (17.Nd7 Rd7 18.Bf6 gf6+=) 17...Nd5 (17...Ne5 18.Be5 Nd5 19.Qb3=+) 18.Nd7 Rd7 19.Be5 (19.Qb3 Bc3 20.Rbc1 Rdc7=) 19...Rcd8 20.Qb3 Nc3 (20...Bc3!? 21.Bg3 Bf6=+) 21.Rbc1?? (better 21.Bc3 Bc3 22.Rfd1=) 21…Ne2–+ (21...Ne2 22.Kh1 Nc1 23.Rc1 Rd3–+) 0–1. GuestYTVT – GuestTJZL, freechess.org, 2017.

6.a4 Be7

7.Qb3 0–0 8.Bd3 Ne4–/+ 9.Nf3?? (9.Qc2 Bh4 10.g3 Bf6–/+) 9...Nd7 (better 9...Nc5 10.Qa2 Nd3 11.Kf1 dc4–+) 10.Be4 (10.Be2 Rc8–/+) 10...Be4 (10...de4 11.Nd4 Nc5 12.Qc2 Nd3 13.Kf1–+) 11.d4 Nf6 (11...dc4 12.Qc4 Rc8 13.Nc3 cb5 14.Qb5–/+) 12.Nfd2 (12.Nbd2 dc4 13.Qc4 cb5 14.ab5 Qb6=+) 12...Bg6 (12...dc4 13.Nc4 Bg2 14.Rg1–+) 13.Rg1 (13.Ba3 Ba3 14.Na3 Qa5=+) 13...Ne4 (13...cb5 14.ab5 Qc7 15.Ba3–/+) 14.Ne4 Be4 15.f3 (15.Ba3 dc4 16.Qc4 Ba3 17.Na3 Qa5 18.Ke2 Rfd8=+) 15...Bg6 (15...dc4 16.Qc4 Bd5 17.Qe2 Bb4 18.Bc3–/+) 16.g3 a5 (16...a6 17.Nd2–/+) 17.b6 (17.Ba3!?–/+) 17...Bb4 18.Bc3 Bc3 (18...dc4 19.Qc4 Qb6 20.Bb4 ab4 21.Rg2–/+) 19.Qc3 Qf6 (19...dc4!? 20.Nd2 Bd3–/+) 20.Nd2=+ Rfe8 21.c5 e5 22.de5 Re5 23.Kf2 Rae8 24.Rae1 Ra8 25.f4 Ree8 (25...Rae8 26.Nb3 Rh5 27.Qf6 Rh2 28.Rg2 Rg2 29.Kg2 gf6 30.Na5+=) 26.Qf6+= gf6 27.Nf3 Re4 28.Nd4 Ree8? (better 28...f5+–) 29.f5+– Bh5 (29...Re4 30.g4+–) 30.g4 Bg4? (30...Bg6+–) 31.Rg4 Kh8 32.Reg1 Rad8 33.h4 Rf8 (33...Re5 34.h5+–) 34.h5 h6 35.Nb3 Ra8 36.Na5 (better 36.Rg7+–) 36...Ra5= 37.Rg8?? (better 37.Rc1=) 37...Rg8–+ 38.Rg8 Kg8 39.Kf3 (39.e4 Rc5 40.Ke3 de4 41.Ke4 Rc4 42.Ke3 Ra4–+) 39...Ra4 40.Ke2 (40.Kg3 Ra5 41.Kf3 Rc5–+) 40...Rh4 41.Kd3 (41.Kf3 Rh5 42.Kg4 Rg5 43.Kh4–+) 41...Rh5 42.e4 de4 43.Ke4 Rg5 44.Kf4 (44.Ke3 h5 45.Kd2 h4 46.Ke2 h3 47.Kf2 h2 48.Kf3 h1Q 49.Ke3 Rg3 50.Ke2 Qh2 51.Ke1 Rg1) 44...h5 45.Ke4 (45.Kf3 h4 46.Kf2 h3 47.Ke2 h2 48.Ke3 h1Q 49.Kd2 Qh3 50.Kd1 Rg2 51.Ke1 Qh1) 45...h4 46.Kd4 h3 47.Kc4 (47.Ke4 h2 48.Kf3 h1Q 49.Ke3 Rg3 50.Ke2 Qh2 51.Ke1 Rg1) 47...h2 (47...Rg3 48.Kb4 h2 49.Ka4 h1Q 50.Ka5 Qb1 51.Ka4 Qb5) 48.Kb4 h1Q 49.Kc4 (49.Ka4 Qh3 50.Kb4 Rg4 51.Ka5 Qc3) 49...Qe4 (49...Qh3 50.Kb4 Rg4 51.Ka5 Qc3) 50.Kc3 Rg3 (50...Qe3 51.Kb2 Rg2 52.Kb1 Qe1) 51.Kd2 Qg2 52.Ke1 (52.Kd1 Ra3 53.Ke1 Ra1) 52...Qh2 53.Kf1 (53.Kd1 Rg1) 53…Rg1 0–1. afsharian – jstokes, lichess.org, 2019.

7.Qb3 0–0 8.Nf3 Nbd7 9.d4 dc4 10.Bc4 Nb6 11.a5 Nbd5 (11...Nc4 12.Qc4 Bb1 13.Rb1 Qa5 14.Bc3 cb5 15.Rb5–/+) 12.Ne5? (12.0–0 cb5 13.Qb5 a6=) 12...Nd7?? (12...Bb1 13.bc6 Bb4 14.Ke2 Be4=+) 13.bc6= bc6? (better 13...Ne5 14.cb7 Nc4 15.ba8Q Qa8–+) 14.Nc6+– Qe8 15.Bd5 ed5 16.Qd5 (16.Nc3 Be4+–) 16...Be6 (16...Be4! 17.Ne7 Qe7+=) 17.Ne7 (17.Qf3 Nf6 18.Ne7 Qe7+–) 17...Qe7+– 18.Qf3 Qb4 (18...Rab8!? 19.Bc3 Nf6+–) 19.Bc3+– Qc4 20.Qe2 (20.e4 Rfe8 21.Nd2 Qa6+–) 20...Qe2 (20...Qc6!? 21.f3 Rfe8+–) 21.Ke2+– Nf6 (21...Bc4 22.Kd2+–) 22.f3 Nd5 23.Bd2 (23.e4 Nf4 24.Kf2 f5+–) 23...Rfd8 (23...f5 24.e4 fe4 25.fe4+–) 24.Na3 (24.e4 Nf6 25.d5 Nd5 26.ed5 Rd5+–) 24...a6 (24...Nf6 25.Rab1+–) 25.Rhc1 (25.e4 Nf6 26.Be3 Kf8+–) 25...Rac8 (25...Nf6 26.Kd3+–) 26.e4 Ne7 (26...Nc7 27.Bf4 Ne8 28.d5+–) 27.d5 Bd7 (27...Bd5 28.ed5 Nd5 29.Rc8 Rc8 30.Rb1+–) 28.Bb4 (28.Rcb1 Nd5 29.ed5 Bf5+–) 28...Ng6 29.g3 (29.Rc8 Rc8 30.Bd6 Rd8+–) 29...h6 (29...f5 30.Ke3+–) 30.f4 (30.Rc8 Rc8 31.Bd6 f6+–) 30...Rb8 31.Bd6 (31.Rab1 Rbc8+–) 31...Bb5?? (better 31...Bg4 32.Kd3 Rd6+=) 32.Nb5+– Rb5 33.Rc5 (better 33.Rc6 Re8 34.Ke3+– (34.Ra6?! Re4 35.Kf3 f5+–)) 33...Rd6? (better 33...Rb2 34.Kf3 Rd6=) 34.Rb5+– ab5 35.a6 (35.Rb1 f5 36.Rb5 fe4+–) 35...Rd8+– 36.a7 (36.Kd3 f5 37.a7 fe4 38.Ke4 Ra8+–) 36...Ra8 37.e5 (37.d6 Nf8 38.Ke3+–) 37...Kh7? (better 37...Ne7 38.d6 Nc6+=) 38.d6+– Nf8 39.f5 Nd7 (better 39...g6 40.g4 h5 41.gh5 gf5+–) 40.e6 fe6 41.fe6 Nf6 (41...Nc5 42.e7 Nd7+–) 42.d7 b4 43.d8Q! Rd8 44.a8Q Ra8 45.Ra8 Nd5 (45...Kg6+–) 46.Rd8 Nc3 (46...Nf6 47.e7 b3 48.Kd3+–) 47.Kd3 Na2 (47...Nb5 48.e7 Nc7+–) 48.e7 (48.e7 Kg6 49.e8Q Kg5 50.Rd5 Kf6 51.Rd6 Kf5 52.Qe6 Kg5 53.Rd5) 1–0. afsharian – Gub1951, lichess.org, 2019.

7.Nc3 0–0 8.Nf3 a6 9.Be2 ab5 10.ab5 Ra1 11.Qa1 dc4 12.Bc4 Bd3 13.Bd3 Qd3 14.Ne5 Qf5 15.Nf3 (15.d4 cb5 16.Nb5 Nd5=+) 15...cb5–/+ 16.Nd4 Qg5 (16...Qg6 17.0–0–/+) 17.0–0=+ b4 18.Nce2 Nc6 19.h3 (19.Rc1 Rd8=+) 19...Rd8 20.Rc1 Qd5 21.Nf4 Qd7 22.Nfe2 (22.d3 Rc8=+) 22...e5= 23.Nf3? (23.Nc6!? bc6 24.Be5=) 23...e4 (23...Qd3 24.Ng3 e4 25.Nd4 Nd4 26.Bd4–/+) 24.Nfd4 Ne5 25.Qa5 (25.Nf4!?–/+) 25...Nd3–+ 26.Rc7 (26.Rb1 Bc5–+) 26...Qe8 (26...Qd5!? 27.Nb5 Re8 28.Bf6 Bf6–+ (28...gf6?! 29.Qa4–/+)) 27.Nf5–/+ Bf8 (27...Nd5 28.Rb7 Bf8 29.Bd4–/+) 28.Bf6=+ gf6 29.Nf4 (29.Neg3!? b3 30.Rb7+=) 29...Ra8 30.Qb6 Ra1 31.Kh2 Nf2?? (better 31...Nf4 32.ef4 Qe6=+) 32.Qf6+– Rd1? (better 32...Ra5+–) 33.Nh5 Qe6 (33...Ng4 34.hg4 b3 35.Ne7 Qe7 36.Re7 Rf1 37.Qg5 Kh8 38.Qg7 Bg7 39.Re8 Bf8 40.Rf8) 34.Qe6 fe6 (34...Rh1 35.Kg3 Bd6 36.Qd6 Rh3 37.gh3 Nh1 38.Kf4 h6 39.Nf6 Kh8 40.Qd8) 35.Nf6 Kh8 36.Rh7 1–0. Mittelstaedt,Joel (1755) – Perestjuk,Marko (1805), GER–ch Net Qual4 U18, 2011.

7.Be2 0–0 8.Nf3 Nbd7 (8...dc4 9.Bc4 a6 10.Nc3+=) 9.0–0 (9.bc6 bc6 10.Nd4 Bd6=) 9...Qc7 10.d3 dc4 11.dc4 Rfd8 12.Qb3 Nc5 13.Qa2 a6 (13...Nd3 14.Bd4+=) 14.Nc3 (14.Be5 Qd7 15.b6 Nfe4=) 14...ab5–/+ 15.cb5 Qa5 (15...cb5 16.Nb5 Qa5 17.Nfd4=) 16.Nd4 (16.bc6 bc6 17.Nd4 Qc7=) 16...cb5 17.Bb5 (17.Nf5 ef5 18.Bb5 Nd3=) 17...Bd3 18.Bd3 Nd3 19.Ba3 (19.Rfd1 Nc5=) 19...Ba3–/+ (worse is 19...Qc3 20.Be7 Rdc8 21.Bf6 gf6 22.Qb1+=) 20.Qa3 Rac8 (20...e5!? 21.Ncb5 e4+=) 21.Ncb5= Nc5 22.Rac1 (22.Rfc1 b6=) 22...Qa4+= 23.Qa4 Na4 24.Rc8 Rc8 25.Nd6 Rb8 26.Rc1 Ne8 27.N4b5 (27.Ne8 Re8 28.Rc7 b6+=) 27...Nd6–/+ 28.Nd6 g6 (28...f5 29.e4 fe4 30.Ne4–/+) 29.g3 (29.h4 b5 30.Rc7 f5+=) 29...b5–/+ 30.Rb1 (better is 30.Rc7!? f5 31.Nf7–/+) 30...b4–+ 31.Nc4 b3 32.Kf1? (better is 32.Nb2 Nc3 33.Ra1–+) 32...b2 33.Ke1 Rb4 34.Nb2 Rb2 35.Rb2 Nb2 36.Ke2 Kg7 37.f3 Kf6 38.h3 Ke5 39.Kd2 Nc4 40.Kd3 Nd6 41.Ke2 f5 42.Kd3 g5 43.g4 f4 44.e4 h6 45.Kc3 Ne4! 46.fe4 Ke4 47.Kd2 f3 48.Ke1 Ke3 49.Kf1 f2 50.Kg2 Ke2 51.h4 f1Q 52.Kh2 Kf3 53.hg5 Qg2 0–1. Faganel,Kaja – Vinokur,Yuliya, Al–Ain UAE, World Ch Girls U10, 2013.

7.Nf3 0–0 8.Nc3 Nbd7 (8...Bd6!?=+) 9.bc6= bc6 10.cd5 (10.Nd4 Bd6=) 10...cd5 (10...ed5 11.Nd4 Bg4 12.f3+/– (12.Nc6?! Bd1 13.Nd8 Ba4+=)) 11.Nd4 Bg6 (11...Be4 12.Nc6 (12.Ne4?! Ne4 13.Nc6 Qe8=) 12...Qe8 13.Ne7 Qe7 14.Ba3+/–) 12.Nc6 Qe8 13.Ne7 Qe7 14.Ba3 Qd8 15.Bf8 Qf8 16.Be2 Qc5 (16...Rc8 17.0–0+/–) 17.0–0 (17.Rc1 Qb4+–) 17...d4+/– 18.Bf3 Rb8 19.Nb5 e5 (19...Bd3 20.Rc1 (< 20.Nd4 Bf1 21.Qf1 Ne5+/–) 20...Qb4 21.Nd4+–) 20.Rc1 (20.ed4 Qb6+–) 20...Qb6 21.Rc6 Qa5 22.Qc1 Qa4 23.Rc8 Rc8 24.Qc8 Nf8 25.Nd6 de3 26.de3+/– Qh4 27.Nf5 Bf5 28.Qf5 e4 29.Be2+– g6 30.Qa5 Ne6 31.Qa7 Ng4 32.h3 Nf6 33.Bc4 Ng5 34.Qb8 Kg7 35.Qg3 Qh5 36.h4 Ne6 37.Be6 fe6 38.Qc7 Kf8 39.Rb1 (39...Ne8 40.Qf4 Kg8 41.Qe4+–) 1–0. Rohrbacher,Walter – Kapp,Joachim, Baden–ch Sen, 2002.

7.Nf3 0–0 8.Bf6 Bf6 9.d4 –/+.

7.Nf3 dc4 8.Bc4 Nbd7 (8...Bd3 9.Qb3 Bc4 10.Qc4=+) 9.d4 (9.bc6 bc6 10.Nd4 Be4=) 9...0–0 (9...cb5 10.ab5 0–0 11.0–0=) 10.Be2 (10.bc6 Rc8=) 10...Bg4 (10...cb5 11.ab5 Bb4 12.Bc3=+) 11.0–0 (11.bc6 bc6 12.0–0 Rb8=) 11...Bh5 (11...Rc8 12.Nc3=) 12.Nbd2 (12.bc6 bc6 13.Qc2 c5=) 12...Bg6 (12...Rc8 13.Rc1=) 13.Qb3 (13.Nh4 Be4+=) 13...cb5= 14.ab5 b6 (14...Nb6 15.Ba3=) 15.Bc4 (15.Ba3 Ba3 16.Qa3 Be4+=) 15...Qc7 16.Ng5 (16.Rfc1 Qd6+=) 16...h6 (16...Bd6 17.f4=) 17.Ngf3+= Bh7 (17...Qd6 18.Ba3 Nc5 19.dc5 bc5 20.Bb2+–) 18.Rac1 (18.Rfc1 Qd6+/–) 18...Qd8 (18...Qd6 19.Rfd1+=) 19.Ne5 (19.Ba3 Rc8+=) 19...Ne5= 20.de5 Ne4 21.Ne4 Be4 22.Rfd1 Qe8 23.Ba3 Ba3 24.Qa3 Rd8 25.Qb4 Rd1+= 26.Rd1 Qc8 27.Be6+/– Qe6 28.Qe4 Rc8 29.h3 Re8 30.Rd5 Re7 31.f4 Qg6? 32.Qg6+– fg6 33.Rd6 Kf7 34.Kf2 h5 35.Kf3 Re6? 36.Re6 Ke6 37.Ke4 Kd7 38.Kd5 Kc7 39.e6 a6 40.ba6 b5 41.e7 Kd7 42.Kc5 Ke7 43.a7 Kf6 44.a8Q Kf5 45.Qa3 g5 46.Kb5 gf4 47.Qe7 g5 48.Qd7 Ke4 49.ef4 Kf4 50.Qd5 Kg3 51.Qg5 Kh2 52.Qh5 Kg1 ½–½. toll (1640) – Feynman (1655), ICC, 2003.

5.b5 Nbd7

6.a4 Nc5 7.Ba3 dc4 8.Bc5 Bc5 9.Bc4 e5 10.Nc3 0–0 11.Nge2 Re8 12.Ng3 Bg6 13.0–0 Qd7 14.d3 Rad8 15.Nge4 Qe7 16.Nf6 Qf6 (worse is 16...gf6 17.Qf3 c6 18.bc6 bc6 19.Qc6+/–) 17.e4 Bd4 18.Qc2 Qd6 19.Ra2 Bh5 20.Nd5 Rc8 21.Ne3 Bg6 22.Qb3 Re7 23.Nd5 Rd7 24.Ne3 Rdd8 (24...c6!?+=) 25.Nf5= Qd7 26.Ne3 (26.Nd4!? Qd4 27.a5=) 26...Rb8 27.Qc2 Rdc8 28.Rb1 c6 29.bc6 bc6 30.Ra3 Rb6 31.Rab3 Rcb8 32.a5 ½–½. Menze,Gerold – Orschulik,Nils (1985), Niedersachsen–ch, 2008.

6.Nc3 a6 7.a4 (7.ba6 ba6 8.Qa4 c5=+) 7...ab5 8.ab5 (8.cd5 ba4 9.de6 Be6 10.Ra4 Ra4 11.Qa4 Be7=) 8...Nb6 (8...Ra1 9.Qa1 dc4 10.Bc4–/+) 9.cd5 (9.Ra8 Qa8 10.cd5 ed5=) 9...ed5 (9...Ra1 10.Qa1 ed5 11.Nf3=+) 10.Nf3 (10.Ra8 Qa8 11.Nf3 Bd6=) 10...Be7 (10...Ra1 11.Qa1 Bd6 12.Be2=+) 11.Be2 (11.Ra8 Qa8 12.Be2 Nc4 13.Nd5 Nb2 14.Nc7 Kd7 15.Na8 Nd1 16.Nb6 Kc7+/–) 11...0–0 (11...Ra1 12.Qa1 0–0 13.Qa7=) 12.0–0 (12.Ra8 Qa8 13.0–0 Re8=) 12...c5 (12...Ra1 13.Ba1 Re8 14.Nd4=) 13.bc6 bc6 (13...Ra1 14.Qa1 bc6 15.Nd4=) 14.Ra8 Qa8 15.Qa1 (15.Nh4 Be6=) 15...Qb7 16.Qc1 Ra8 17.Nd4 (17.d3 Bd6=) 17...Bd7 (17...Bg6 18.Nf3=+) 18.Qc2 Ng4 (18...Bb4 19.Rb1=) 19.h3 (19.Nf5 Bf5 20.Qf5 Nf6+=) 19...Ne5= 20.Rb1 Qc7 (20...Nec4 21.Bc1=) 21.Ra1 Ra1 22.Ba1 Qa7 23.Qb2 Nec4 24.Qc1 Nd2!–/+ 25.Qb2 Ndc4 26.Qa2? Qc7 27.Nf3 h6 28.e4 Be6 29.ed5 Bd5 30.Nd5 cd5 31.Bd4 f6 32.Bd3 Bd6 33.Qe2 Qe7 34.Qe7 Be7 35.Kf1 Kf7 36.Ke2 Bd8 37.Nd2 Nd2 38.Kd2=+ Ke6 39.g4 Bc7 40.f3 Nc4 41.Ke2 Ne5 42.Bf5 Kf7 43.Bc5 Ng6 44.Be3 Ne7 45.Bc2 g5 46.Bd2 Ke6 47.Bc3 Be5 48.Bd2 Nc6 49.Bf5 Kd6 50.Bc1 Nd4–+ 51.Kf2 Nf5 52.gf5 Bf4 53.Bb2 Be5?? 54.Ba3?? Kc6–+ 55.Bf8 h5 56.Ke2 d4 57.Kd3 Kd5 58.Ba3? Bf4 59.Bb2 Be3 60.Ba1 Ke5 61.Bb2 Kf5 62.Ke2 Kf4 (63.Ba3 Kg3–+) 0–1. Skaug,Thorbjoern – Johansen,Odd Bjoern, Hostturnering, 2001.

6.Nc3 dc4 7.Nf3 –/+.

6.d4 Bb4 7.Nc3 Ne4 8.Rc1 Qh4 9.g3 Qf6 10.Nf3 dc4 11.Bc4? (better is 11.Be2–/+) 11...Nb6–+ 12.Be2 Nd5 13.Qb3 Bc3 (13...Ndc3?! 14.Qb4 Na2 15.Qc4 Nc1 16.Qc1–+) 14.Bc3 Ndc3 15.Rc3 (15.h3 Ne2 16.Ke2 Nd6–+) 15...Nc3 16.Qc3 Be4 17.Ne5 (17.Qc7 Bf3 18.Bf3 Qf3 19.0–0–+) 17...Bh1 18.Qc7 0–0 19.Nd7 (19.f3–+) 19…Qd8 (19...Qd8 20.Qd8 Rfd8–+) 0–1. Bushkova,Vera – Azimova,K (2025), 61st ch–RUS w 1st League, 2011.

6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 Nbd7 6.c4).

6.d4 Bb1

7.Qb1 Bb4 8.Kd1 dc4 9.Bc4 Ne5 +=.

7.Qb1 Bb4 8.Kd1 Ne4 9.Nh3? (9.Qc2 Qh4 10.Nh3 Ndf6+=) 9...Qh4 (better is 9...Nc3 10.Bc3 Bc3 11.cd5 ed5–+ (worse is 11...Ba1 12.de6 fe6 13.Qa1–/+)) 10.Qc2+= 0–0 (10...Ndf6 11.Bd3+=) 11.a3 Ba5 12.Bd3 f5 13.f3 Nef6 14.c5 Rfe8 15.Qa4?? (15.c6 bc6 16.Qc6 Rab8+=) 15...b6 (better is 15...Nc5 16.Qa5 Nd3–/+) 16.c6 Nf8 17.Qc2 g5 (17...Ng6 18.Qf2+=) 18.Nf2 Re7 19.g3 Qh5 20.Be2 Qh6 21.g4 (21.Qd3!?+/–) 21...Qh4+= 22.Rf1 Rae8 23.h3+= Ng6 24.a4 Bb4 25.Rb1 f4 26.e4 de4= 27.fe4 Nd5 28.ed5 ed5 29.Qb3 Re2–+ 30.Qd5 Kg7 31.Qf3 R8e3 32.Qe2+= Re2 33.Ke2 Qg3 34.d5 Kg8 35.Bd4 Qa3 36.Nd3 Bd6 37.Ra1 Qb3 38.Rfd1 Qd5–+ 39.Bf2 Qg2 40.Rh1?? Nh4 41.Kd2 Bc5 42.Rhf1 Bd6 43.Rh1 Qd5 44.Bh4?? Bb4–+ 45.Ke2 Qe4 46.Kf2 Qd3 47.Bg5 Qe3 48.Kg2 Qe2 0–1. zamzaweck (1660) – fleet_commander (1615), gameknot.com, 2008.

7.Rb1 Bb4–/+ 8.Ke2 0–0 9.c5 c6 10.a4 cb5 11.ab5 Qa5 12.Qd3 Rfc8 (12...e5 13.Kd1 ed4 14.c6–+) 13.Ra1= Qc7 14.Nf3 Ne4 15.Ne1 Be1 16.Ke1 e5 17.f3 Ng5 18.Rc1 (18.Qb3!?+=) 18...ed4 19.Bd4 a6 20.b6 (better is 20.Kf2!?=) 20...Nb6–/+ 21.Bb2 (21.Qc2!?–/+) 21...Nc4–+ 22.Bc3 (better is 22.Bd4 Ne6 23.Qc3–+) 22...Qc5 23.Bd4 Qe7 24.Qf5 Ne6 25.Bd3 g6 26.Qf6 (26.Qd5 Nb6! 27.Rc8 Rc8 28.Bb6 Rc1 29.Kf2 Rh1 30.Qc4–+) 26...Qf6 27.Bf6 Ne3 28.Kf2 Nc4 29.Rb1 Nc5 30.Bc4 dc4 31.Bd4 b5 32.Rhd1 Na4 (32...Nd3 33.Rd3 cd3 34.Ke3–+) 33.Rbc1 c3 34.Ke2 (34.Rc2 b4 35.Rb1 a5–+) 34...b4 35.Ra1 (35.Be3 a5–+) 35...Nb2 36.Rdc1 Rd8 (36...Rc4 37.Be3–+) 37.Be3 (37.Bc3 Re8 38.Kf1 bc3 39.Rc3–+) 37...Re8 38.Kf2 (38.Re1–+) 38...Nd3 39.Ke2 Nc1 40.Rc1 Rac8 (better is 40...b3 41.Rc3 b2 42.Rb3–+) 41.Kd3 c2! 42.Bd2 (42.Rc2 Re3 Double attack) 42...b3 43.Bc3 Red8 44.Ke2 Rc3 45.Ke1 (45.Kf2 b2 46.Rh1 Rd1 47.Re1 c1Q 48.Re6 Rf1 49.Kg3 Rcf3 50.Kh4 Qf4 51.g4 Qh6) 45...b2 46.Rc2 (46.Ke2 bc1Q 47.Kf2 Qf4 48.Kf1 c1Q 49.Kf2 Rd2) 46...Rc2 47.Kf1 Rd1 0–1. Coskun,Selin – Xiang,Ellen, Wch U10 Girls, 2007.

7.Rb1 Bb4 8.Ke2 dc4 9.a3 Be7 10.g3 (10.Qc2 Nb6–/+) 10...a6–+ 11.Bg2 Nd5 (11...ab5 12.Bb7 Rb8 13.Bc6–+) 12.e4 N5b6 13.ba6 Ra6 14.Nf3 (14.Qc1 Qa8–+) 14...Ba3 15.Bc3 0–0 16.Qc2 Qa8 (16...Qf6 17.Bd2–+) 17.Ra1 (17.Rhd1 Be7–+) 17...f5 18.ef5 ef5 (18...Rf5 19.Bh3 Rf6 20.d5 ed5 21.Bf6 Nf6 22.Be6 Kf8 23.Qf5–+) 19.Ne5 f4 (19...c6 20.Rhe1–/+) 20.gf4 (20.Nd7 Nd7 21.Bd5 Kh8 22.Bc4–+) 20...Rf4–+ 21.Bd2 Rd4 22.Be3 Rh4 (22...Ne5?! 23.Bd4 Qe8 24.Qe4 (24.Bb7?? Nc6 25.Kf1 Nd4–+) 24...Qh5 25.f3–/+) 23.Qf5 Ne5 24.Qe5 Bd6?? (better is 24...Qc8 25.Bb7 Qb7 26.Qe6 Kf8 27.Qf5 Ke8 28.Qe6 Be7 29.Qg8 Bf8 30.Qe6 Be7 31.Qg8 Bf8 32.Qe6 Be7=) 25.Qe6= Kf8 26.Qf5 Ke8 27.Ra6 Qa6 28.Qe6 Be7 29.Qg8 Bf8 30.Qe6 Be7 31.Qg8 Bf8 32.Qe6 Be7 33.Qg8 Bf8 34.Qe6 Be7 35.Qg8 Bf8 ½–½. zack1984 (1890) – fifeclub (1880), gameknot.com, 2016.

6.cd5 ed5

7.Nf3 h6 8.Be2 Bd6 9.0–0 0–0 10.Nc3 Re8 11.Nd4 Bh7 12.f4 c5 13.bc6 bc6 14.Qa4 (14.Qc1 c5 15.Nb3 a6=+) 14...c5 (14...Nc5 A) 15.Qc6?? Rc8 16.Nd5 Rc6 17.Nc6 Qd7 (17...Nd5?! 18.Nd8 Rd8 19.Ba3=) 18.Nf6 gf6–+; B) 15.Qd1 Nd3 16.Rb1–+) 15.Ndb5 (15.Nc6 Qc8 16.Ba6 Qc7–/+) 15...Bb8 (15...Bf8 16.f5–/+) 16.Bf3 (16.Qb3!? a6 17.Na3–/+) 16...a6–/+ 17.Na3 (17.Nd5? Nd5 18.Qa3 N7f6 19.Bf6 ab5 (19...Nf6?! 20.Ba8 ab5 21.Bc6–/+; 19...gf6?! 20.Rac1–+) 20.Qc5 Bd6 (worse 20...gf6 21.Qd5 Qd5 22.Bd5–+) 21.Qd5 Qf6 (21...gf6?! 22.Qa8 Qa8 23.Ba8 Ra8 24.f5=) 22.Qb5 Rab8–+) 17...Nb6 (17...Bc7!?–/+) 18.Qa5 Qd6 (18...Bd6 19.Rac1–/+) 19.Na4=+ Na4 20.Qa4 Bc7 (better 20...Ba7=+) 21.Be5? (better 21.Bf6 gf6 22.Nb1=) 21...Re5–/+ 22.fe5 Qe5 23.g3 Bd3 24.Rfc1 (24.Rfe1 Rb8 25.Rac1–+) 24...Be4 (better 24...Qf5 25.Rf1 Qe6–/+) 25.d4?? (better 25.Qc6 Rc8 26.Qa6=) 25...Qg5–+ 26.Qd1 (26.Be4 Qe3 27.Kf1 Qe4 28.Kg1–+) 26...Qe3 27.Kg2 (27.Kf1 Bf3 28.Nc2–+) 27...Qa3 (better 27...Ng4! 28.Rc2 Qa3–+) 28.Qb3 (28.Be4 de4 29.Rc5 Bd6–+) 28...Qa5 29.Rc5 (29.Be4 c4 30.Qc3 Qc3 31.Rc3 Ne4 32.Rc2–+) 29...Qd2 30.Kh1 (30.Kf1 Bd3 31.Kg1–+) 30...Rb8 (30...Ng4 31.Rc2 Bc2 32.Bg4 Bb3 33.ab3 Qd4 34.Ra4 Qb2 35.Ra1 Qa1 36.Kg2 Rb8 37.Bc8 Rb3 38.Bf5 Rb2 39.Kh3 Qf1 40.Kg4 Rb4 41.Be4 Re4 42.Kh5 Qf5) 31.Qd1 Bf3 32.Qf3 Rb2 33.Kg1 Qh2 34.Kf1 Ne4 35.Rd1 (35.Qf7 Kf7 36.Rc7 Kg6 37.Rc6 Kg5 38.Rg6 Kg6 39.Rc1 Qf2) 35…Ng3 (35...Ng3 36.Qg3 Qe2 37.Kg1 Qd1 38.Qe1 Qe1; 35...Rf2 36.Qf2 Qf2) 0–1. Kuznetsov,Petr – Emeljashin,Yury, Championship Kemerovo, 2011.

7.Nf3 Bd6

8.Nc3 0–0 9.Be2 h6 10.0–0 Re8 11.a4 Qe7 12.d4 c6 13.Bd3 Ne4 14.bc6 bc6 15.Be4 de4=+ 16.Ne1 Rab8–/+ 17.Qc1 Nf6 18.Nc2 Qc7 19.g3 Bg4 20.Ba3 Bf3 21.h3?? Bg3! 22.Ne1 Bh2# 0–1. Owen,H – Wilkerson,M, USA op Concord Cal, 1995.

8.d3 a6 9.ba6 Ra6 10.Be2 0–0 11.0–0 Rb6 12.Qc2 c5 13.Qd2 Re8 14.Na3 Ng4 15.h3 Nge5 16.e4? (better 16.Ne5 Ne5 17.d4 cd4 18.Qd4 Ba3 19.Ba3=+) 16...de4–+ 17.de4 Be4 18.Ng5? (better 18.Ne1 Qf6 19.Bc3–/+) 18…Rb2! (18...Rb2 19.Qb2 Qg5–+) 0–1. mgilbert – marekt, net–chess.com, 2020.

8.Be2 0–0 9.0–0 c5 10.d3 (10.bc6 bc6 11.Nd4 Bg6 12.Nc6 Qc7 13.Nd4 Bh2 14.Kh1 Be5=; 10.a4 Qe7 11.Nc3 Rfe8 12.d3 Rac8 13.a5 Ne5 14.a6+=; 10.Nc3 Re8 11.d3 Ne5 12.Na4 Nf3 13.Bf3 Be6 14.Rc1+=) 10...Qc7 (10...Re8 11.a4 Qe7 12.Nc3 Rac8 13.a5 Ne5 14.a6+=) 11.h3 (11.Nc3 Rfe8 12.Qb3 Be6 13.Qa4 Rad8 14.Rac1=) 11...Rfe8 12.Nbd2 (12.Nc3 Rad8 13.Rc1 Qb6 14.Qb3=) 12...Rad8 (12...a6 13.a4 ab5 14.ab5+=) 13.Qb3 (13.a4 a6+= 14.Qc2+=) 13...d4–/+ 14.e4 Be6 15.Qc2 Bf4 16.Rfc1 Rc8 17.Qd1 (17.a4 Qa5+=) 17...Qb6–/+ 18.a4 a6 19.ba6 (19.Rcb1 ab5 20.ab5 Ra8+=) 19...Qb2–/+ 20.Rcb1 Qc3 21.ab7 Rb8 22.a5 Bd2 23.Nd2 c4 24.a6 (24.Nc4 Bc4; 24.dc4 Qb2) 24...cd3 25.Bf3 Nc5? (better is 25...Qc7+/–) 26.a7+– Nb7 27.ab8Q Rb8 28.e5 Nd5 29.Rb7! Rb7 30.Ra8 Bc8 31.Bd5 Rc7 32.e6 fe6 (32...Kf8 33.ef7 Qc5 34.Qa4 Rf7 35.Bf7 Kf7 36.Qb3 Be6 37.Qb7 Qe7 38.Qe4+–) 33.Be6 Kh8 34.Nc4! Rc4 (34...g5 35.Kh2 d2 36.Qd2 Qd2 37.Nd2 Kg7 38.Rc8 Rc8 39.Bc8 Kf6+–) 35.Bc4 Qc4 36.Qg4 Qc1 37.Kh2 Qc7 38.g3 (38.g3 Kg8 39.Rc8 Qc8 40.Qc8 Kf7 41.Qd7 Kf8 42.Qd4+–) 1–0. Sternik,Ryszard – Bakkers,Max, corr SOK–91–76, 1993.

8.Be2 0–0 9.0–0 h6 (9...c5 10.bc6 bc6 11.Nd4+=) 10.d4 Re8 11.Nc3 c6 12.Qb3 Qa5 13.Rfc1 Rac8 14.a4 Nb6 15.Ba3 Ba3 16.Qa3 Nbd7 17.Qb3 Rc7 18.Ne1 Rec8 19.Na2 (19.Nd3!?=) 19...c5+= 20.dc5 (20.Nf3 Be4+=) 20...Nc5 21.Qb4 (21.Qc3 Qc3 22.Rc3 Nfe4+=) 21...Qa4–/+ 22.Qa4 (22.Rc3 Qb4 23.Nb4 a6+=) 22...Na4+= 23.Rc7 Rc7 24.Nb4 Nc3 25.Bd3 (25.Bf1!? Bd7 26.Ra7 Nb5 27.Ra8 Kh7 28.Bd3 g6 29.Nec2–/+) 25...Bd3–+ 26.Ned3 (26.b6 ab6 27.Ned3–+) 26...Nb5 27.g3 b6 28.Na6 Rc3 29.Ndb4 Nc7 (29...Rc4 30.h3–+) 30.Kg2 Kf8 31.Nc7 Rc7 32.Rd1 Rc5 33.Na6 (33.Nd3 Rc6–+) 33...Rc4 34.Rd2 Ke7 35.Rb2 Kd6 36.Nb4 a5 37.Nd3 (37.Nc2 Ke5–+) 37...Nd7 38.Kf3 Kc6 39.Ke2 b5 40.Kd2 (40.Ra2 a4–+) 40...b4 41.h4 (41.Kd1 g5–+) 41...Kb5 42.Nc1 Nc5 (42...Nc5 43.Nb3 Ne4 44.Ke1 Ka4–+) 0–1. Moyano Barrero,Antoni (1840) – Montilla Carrillo,Esteban (2270), Cornella ESP, 1st Vallve i Pinol Mem, 2013.

8.Be2 0–0 9.Nc3 A) 9...Re8 10.Nd4 (10.0–0 Nb6 11.d3 c5 12.a4 a5 13.ba6 ba6 14.Rb1+=) 10...Bg6 11.0–0 Nb6 12.Qb3 a5 13.a4 Nfd7 14.f4=; B) 9...Nb6 10.Nd4 (10.Qb3 c5 11.bc6 bc6 12.Nd4 Qd7 13.Nf5 Qf5 14.Rc1=) 10...Bg6 11.f4 Qd7 12.0–0 Bf5 13.Rc1 Rfe8 14.Nf5=; C) 9...Nc5 10.0–0 (10.d3 a6 11.0–0 Qd7 12.ba6 Na6 13.a4 c6 14.a5=) 10...Re8 11.d3 a6 12.ba6 Na6 13.Nb5 Be7 14.Rb1=.

8.Be2 0–0 9.Nd4 Bg6 (9...Be4 10.0–0 Nc5 11.d3 Bg6 12.Qc2 a6 13.Nd2 Re8 14.N2f3=) 10.0–0 c5 11.bc6 bc6 12.Nc6 Qc7 13.Nd4 Bh2 14.Kh1 Be5 =.

8.Be2 Nc5 9.0–0 0–0 A) 10.d4 Nce4 A1) 11.Bd3 Re8 12.Ba3 Bg4 (12...a6 13.Bd6 Qd6 14.ba6= ba6=) 13.Bd6 Qd6 14.a3 Ng5+=; A2) 11.Ba3 a6 12.Bd6 Qd6 13.ba6 ba6 14.Bd3 Ng4=; B) 10.Ba3 Re8 (10...a6 11.Qc1 Bd3 12.Bd3 Nd3 13.Qc3 Nf2 14.Rf2 Ne4=) 11.d4 Nce4 12.Bd6 Qd6 13.Bd3 (13.Ne5 a6 14.ba6 ba6=) 13...a6 (13...Ng4 14.h3= Ngf2=) 14.ba6 ba6=; C) 10.Be5 C1) 10...Re8 11.d4 Nce4 12.Bd6 Qd6 13.Ne5 Nd7 (13...a6 14.ba6 ba6=) 14.Nd7= Qd7=; C2) 10...Nd3 11.Bd6 Qd6 12.Nh4 Be4 13.f3 Nb2 14.Qb3 Bb1+=; C3) 10...a6 11.d4 Nce4 12.ba6 ba6 13.Bd3 Ng4 14.Qc2 Be5=; C4) 10...Be5 11.Ne5 d4 12.Na3 d3 13.Bf3 a6 14.Qb1 Nfe4+=; D) 10.Nc3 Re8 11.d3 a6 12.ba6 Na6 13.Nb5 Be7 14.Rb1 (14.Qc2= Qd7=) 14...Bg4=.

8.Be2 Nc5 9.d3 0–0 A) 10.0–0 a6 11.Nc3 (11.Na3 Qe7 12.ba6 ba6 13.Rb1 Rab8 14.Nc2+= 14...Na4+=) 11...Qd7 12.ba6 Na6 13.a4 c6 14.a5 Qc7=; B) 10.Nd4 Bd7 (10...Bg6 11.0–0 a6 12.a4 Re8 13.Qc2 Qe7 14.Rc1 Ne6=; 10...Qd7 11.0–0 a6 12.Nf5 Qf5 13.Na3 Ne6 14.ba6 Ra6=) 11.0–0 a6 12.Nc3 Be5 (12...ab5 13.Ndb5 Be7 14.Nd4+= 14...Re8+=) 13.Ba3 b6 14.f4 Bd6+=; C) 10.a4 a6 11.Nc3 Qd7 12.0–0 (12.Nd4 Rfe8 13.Qc2 Bg6 14.0–0 Ne6+=) 12...Rfe8 13.Qc2 Bg4 14.h3= Bh5=; D) 10.Nc3 a6 (10...Qd7 11.a4 a6 12.0–0 Rfe8 13.Qc2 Bg4 14.h3 Bh5=; 10...Re8 11.0–0 Qd7 12.Qc2 a6 13.a4 c6 14.Nd4 Bg4=) 11.0–0 Qd7 12.a4 (12.ba6 Na6 13.a4 c6 14.a5 Qc7=) 12...Rfe8 13.Qc2 Qe6 (13...Bg4 14.h3= Bf3=) 14.a5 Bg4=.

8.Be2 Qe7

9.0–0 0–0 10.Nd4 Bg6 (10...Be6 11.Nc3 Nc5 12.Qc2 Bd7 13.Nf5 Qe6 14.Nd6 cd6 15.d4 Nce4; 10...Be4 11.Nc3 Nc5 12.Ne4 Qe4 13.f3 Qg6 14.Rc1 Rfe8 15.Ba3 Qh6) 11.f4 h6 12.Nc3 Nc5 13.f5 Bh7 14.Rc1 Nce4 15.g3 Rfe8.

9.0–0 Nc5 A) 10.Nd4 Bd3 (10...Bg6 11.Nc3 h6 12.f4 Nd3 13.Qb3 Nc5 14.Qd1 Nd3 15.Qb3 Nc5; 10...Bd7 11.Nc3 0–0 12.Qc2 g6 13.a4 a6 14.f4 ab5 15.Ncb5 Rfc8) 11.Nc3 0–0 12.Ba3 Be2 13.Qe2 g6 14.Rab1 Rfe8 15.f4 Nce4; B) 10.Nc3 0–0 (10...Bd3 11.Bd3 Nd3 12.Rb1 h6 13.Qc2 Nb2 14.Rb2 0–0 15.Qf5 Rad8; 10...h6 11.Nd4 Bh7 12.f4 Nd3 13.Qb3 Nc5 14.Qd1 Nd3 15.Qb3 Nc5) 11.Nd4 Bd7 12.Qc2 g6 13.f3 a6 14.a4 Ne6 15.Ne6 Qe6; C) 10.d4 Nce4 11.Ne5 0–0 12.f3 Nc5 13.Nd2 Ncd7 14.f4 Ba3 15.Ba3 Qa3; D) 10.Bf6 Qf6 11.Nc3 0–0–0 12.Nd4 Kb8 13.f4 Be7 14.Nf5 Qf5 15.d4 Ne4.

9.0–0 Ne5 A) 10.Ne5 Be5 11.d4 Bd6 12.Qb3 0–0 13.Nc3 c6 14.a4 Rac8 15.g3 h5; B) 10.Nc3 Nf3 11.Bf3 0–0 12.Bd5 Nd5 13.Nd5 Qe4 14.Qf3 Rad8 15.Rfc1 Qd5; C) 10.Qb3 Nf3 (10...c5 11.Nc3 c4 12.Qa4 0–0 13.Nd4 Bg6 14.f4 Nd3 15.f5 Nb2; 10...0–0 11.Nd4 Bd7 12.f4 Nc4 13.Bc4 dc4 14.Qc4 a6 15.Nc3 ab5) 11.Bf3 0–0 12.Nc3 c6 13.a4 Ne4 14.Ne4 de4 15.Be2 Rac8; D) 10.Nd4 Bg6 11.Qb3 Ned7 12.f4 Nc5 13.Qd1 Nd3 14.Qb3 Nc5 15.Qd1 Nd3.

9.0–0 Be6 A) 10.Nd4 0–0 (10...Nc5 11.Nc3 0–0 12.Qc2 Qd7 13.Ne6 Qe6 14.f4 Rfe8 15.Rf3 a6; 10...h6 11.f4 Nc5 12.Qc2 0–0 13.Nc3 Bd7 14.Bf3 c6 15.Nf5 Bf5; 10...Rc8 11.f4 Nc5 12.Qc2 0–0 13.Nc3 Bd7 14.Rf3 g6 15.Rc1 c6; 10...Ne5 11.Qc2 Nc4 12.Ne6 Qe6 13.Bf6 Qf6 14.Nc3 Nb6 15.a4 Qg6) 11.Nc3 Nc5 12.Qc2 h5 13.Rac1 h4 14.Nf5 Bf5 15.Qf5 Qe6; B) 10.Qc2 0–0 (10...h6 11.Nd4 0–0 12.f4 Nc5 13.Nc3 Bd7 14.Bf3 c6 15.Rab1 Rfc8; 10...Nc5 11.Nc3 0–0 12.Ng5 g6 13.Ne6 Ne6 14.f4 Rac8 15.Bf3 c6; 10...Rc8 11.Bd4 0–0 12.Nc3 g6 13.Rab1 Bf5 14.Bd3 Bg4 15.Be2 Bf5; 10...g6 11.Nd4 0–0 12.Nc3 Nc5 13.Ne6 Qe6 14.f4 Rac8 15.f5 Qe7) 11.Nc3 h6 12.Nd4 Nc5 13.f4 Bd7 14.Bf3 c6 15.Ba3 Nce4; C) 10.d4 0–0 (10...Ne4 11.Nc3 0–0 12.Qc2 f5 13.Rac1 Rac8 14.Qa4 Ra8 15.Qc2 Rac8; 10...Bf5 11.Nh4 Be6 12.Nf3 0–0 13.Nc3 Ne4 14.Qc2 f5 15.Rac1 Rac8; 10...h6 11.Nc3 0–0 12.Bd3 Rab8 13.Re1 c6 14.h3 Rfe8 15.Rc1 a6; 10...Rb8 11.Nc3 0–0 12.Qc2 g6 13.Rac1 Bf5 14.Bd3 Bd3 15.Qd3 a6) 11.Nc3 Bf5 12.Nh4 Be6 13.Nf3 Bf5 14.Nh4 Be6 15.Nf3 Bf5; D) 10.Nc3 0–0 (10...Nc5 11.Ng5 0–0 12.Qc2 g6 13.Ne6 Qe6 14.f4 Rae8 15.Rac1 Rd8; 10...h6 11.Nd4 0–0 12.f4 Nc5 13.Qc2 Bd7 14.Bf3 c6 15.Nf5 Bf5; 10...g6 11.Qc2 0–0 12.Nd4 Nc5 13.Ne6 Ne6 14.f4 Nc5 15.Na4 Nfe4; 10...Rb8 11.Qc2 0–0 12.Nd4 Nc5 13.Bf3 Rfc8 14.Rab1 h6 15.g3 Qd7) 11.Qc2 Rfe8 12.Ng5 h6 13.Ne6 Qe6 14.d4 Rac8 15.Qa4 Ra8.

9.0–0 h6 10.Nc3 (10.Nd4 Bh7 (10...Bg6 11.f4 0–0 12.f5 Bh7 13.Nc3 Nc5 14.Qc2 Nce4 15.g3 Nc3; 10...Be6 11.f4 Nc5 12.Nc3 0–0 13.Qc2 Bd7 14.Bf3 c6 15.Nf5 Bf5) 11.Nc3 0–0 12.f4 Nc5 13.f5 Nce4 14.g3 Rfe8 15.Rc1 Be5; 10.a4 Bg6 (10...Nc5 11.Bf6 Qf6 12.Nc3 c6 13.bc6 bc6 14.Nd4 0–0 15.Nf5 Qf5; 10...Bh7 11.Nc3 0–0 12.d4 a5 13.Qb3 Qe6 14.g3 Bf5 15.Nh4 Bh3; 10...0–0 11.Nd4 Bh7 12.Nc3 Nc5 13.f4 Qd7 14.Ba3 Ne6 15.Bg4 Bd3; 10...Ne5 11.Nd4 Bh7 12.Nc3 Nd3 13.Qb3 Nb2 14.Qb2 0–0 15.f4 Bc5) 11.Nc3 0–0 12.d4 Qe6 13.h3 c5 14.dc5 Nc5 15.Nd4 Qd7; 10.Bd4 0–0 (10...c5 11.bc6 bc6 12.Bf6 Nf6 13.Nc3 0–0 14.Nd4 Bg6 15.f4 c5; 10...c6 11.Nc3 c5 12.Bf6 Nf6 13.Qb3 Qe6 14.Nh4 Bh7 15.Rac1 0–0) 11.Nc3 c5 12.bc6 bc6 13.Bf6 Nf6 14.Nd4 Bg6 15.Qa4 c5) 10...Bh7 (10...Nc5 11.Nd4 Bd7 12.Qc2 0–0 13.Nf5 Qe6 14.Nd6 cd6 15.Rac1 Rac8; 10...0–0 11.Qb3 Be6 12.Nd4 Nc5 13.Qc2 Rfe8 14.Rfc1 Qd7 15.h3 Bh3; 10...Bg6 11.g3 0–0 12.Rc1 c5 13.bc6 bc6 14.Nd4 c5 15.Nc6 Qe6) 11.a4 (11.g3 0–0 12.Qb3 c6 13.d4 Rab8 14.a4 Qe6 15.Ba3 Be4) 11...0–0 12.d4 a5 13.Qb3 Nb6 (13...Qe6 14.g3 Rfe8 15.Rfc1 Rac8) 14.Nd2 (14.Rad1 Bf5 15.Ne5 Qe6) 14...c5 (14...Rfe8 15.Ba3= (15.g3 Bf5) 15...Ba3; 14...Bf5 15.Rfe1 Rfd8) 15.dc5 (15.bc6!? bc6 16.Qb6+=) 15...Bc5= 16.Bf3 Rfd8 17.Ne2 Bb4 18.Rfd1 Rac8 19.Rac1 (19.Nd4 Re8=) 19...Rc1 20.Nc1 (worse is 20.Bc1 Rc8 21.Qa2 Bc2–/+) 20...Rc8 (20...Ne4 21.Ne4 Be4 22.Be4 de4 23.Rd8 Qd8 24.Bd4=) 21.Nd3 Bd3 22.Qd3 Na4 23.Bf6 Qf6 24.Qd5 Nc3 25.Qb7 Qd8 26.Ra1 Rb8 27.Qc6 Qd2 28.b6 Qd6 29.Qd6 Bd6 30.Ra5 Rb6 31.g3 g6 32.h4 Rb2 33.Kg2 Kg7 34.Ra6 Bc5 35.Rc6 Bb4 36.Rc7 Nb5 37.Rb7 Be1 38.Kf1 Rf2 39.Ke1 Rf3 40.Rb5 Rg3 41.Kf2 Rg4 42.h5 Rg5 43.Rg5? hg5 44.hg6 Kg6 (44...Kg6 45.Kg2 f5–+) 0–1. Kostrun,Slaven (2245) – Loncar,Robert (2370), Open, Zagreb CRO, 2006.

9.Nd4 Be4 10.0–0 A) 10...Ne5 11.Nc3 (11.d3 Bg6 12.Kh1 Ned7 13.Nc3 0–0 14.a4 Rfe8=) 11...Bg6 12.Qb3 c5 13.bc6 bc6 14.f4+= 14...Rb8+/–; B) 10...0–0 11.Nc3 Rfd8 12.Ne4 de4 13.f3 Qe5 14.g3 Nc5+=; C) 10...Nc5 11.d3 Bg6 12.Qc2 0–0 13.Nd2 Rfe8 14.N2f3 Nfd7=.

9.Nd4 Be4 10.Nc3 Bg6 (10...0–0 11.Ne4 de4 12.f3 Nc5 13.Qc2 Rae8 14.Nf5 Qd8+=) 11.0–0 (11.f4 Nc5 12.0–0 Nd3 13.Bc1 Be4 14.Ne4 Qe4=) 11...Nc5 12.f4 (12.d3 0–0 13.Qc2 a6 14.Nf3 Rfe8=) 12...Nd3 13.Bc1 Be4 (13...h6 14.f5 Qe5=) 14.Ne4= Qe4=.

9.Nd4 Be6 A) 10.0–0 0–0 (10...Nc5 11.Ne6 Ne6 12.Nc3 0–0 13.Qc2 Ba3 14.Ba3 Qa3 15.Bf3 Qd6; 10...Ne4 11.Qc2 0–0 12.Nc3 Nc3 13.Bc3 Nc5 14.Ne6 fe6 15.f3 e5; 10...h6 11.f4 Nc5 12.Qc2 0–0 13.Nc3 Bd7 14.Bf3 c6 15.Ba3 Nce4; 10...Ne5 11.Qc2 0–0 12.Nc3 c5 13.bc6 Nc6 14.Nf5 Bf5 15.Qf5 Rad8) 11.Nc3 Nc5 12.Qc2 Bd7 13.Rac1 a6 14.Nf5 Bf5 15.Qf5 Qe6; B) 10.Qc2 0–0 (10...Nc5 11.0–0 0–0 12.Nc3 Bd7 13.Nf5 Bf5 14.Qf5 Rad8 15.g3 g6; 10...h5 11.Nc3 0–0 12.0–0 Nc5 13.Rac1 h4 14.h3 a6 15.ba6 Na6; 10...h6 11.f4 Nc5 12.0–0 0–0 13.Nc3 Bd7 14.Bf3 c6 15.Nf5 Bf5; 10...Rc8 11.Nc3 0–0 12.0–0 Nc5 13.Bf3 h6 14.g3 Rfe8 15.a4 Qd7) 11.Nc3 Nc5 12.0–0 Bd7 13.Nf5 Bf5 14.Qf5 Rad8 15.Rac1 d4; C) 10.Nc3 0–0 (10...Nc5 11.0–0 0–0 12.Qc2 Bd7 13.Nf5 Bf5 14.Qf5 Rad8 15.f4 d4; 10...h6 11.f4 Nc5 12.0–0 0–0 13.Qc2 Bd7 14.Bf3 c6 15.Nf5 Bf5; 10...Rd8 11.f4 Nc5 12.0–0 0–0 13.Qc2 Bd7 14.Bf3 c6 15.Ba3 Nce4; 10...g6 11.Qc2 0–0 12.0–0 Nc5 13.Ne6 Ne6 14.f4 Nc5 15.Bf3 c6) 11.Qc2 Nc5 12.0–0 h5 13.Rac1 h4 14.Nf5 Bf5 15.Qf5 Qe6.

9.Nd4 Bg6

10.0–0 0–0 11.f4 h6 12.f5 Bh7 13.Nc3 Nc5 14.g3 Nce4 15.Rc1 Rfd8.

10.0–0 Nb6 11.Nc3 Nc4 12.Bc1 0–0 13.Nd5 Nd5 14.Bc4 Nb6 15.Be2 Nd5.

10.0–0 Nc5 11.Nb3 Nd3 12.Bd4 0–0 13.f4 Be4 14.Nc3 Nb4 +=.

10.0–0 Nc5 11.d3 Qe5 12.g3 0–0 13.Qc2 Qe7 14.a4 (14.Rc1+= a6+=) 14...Rfe8 =.

10.0–0 Nc5 11.f4 Nd3 12.Qb3 Nc5 13.Qd1 Nd3 14.Qb3 Nc5 15.Qd1 Nd3.

10.0–0 Ne5 11.f4 Nd3 12.Qb3 Nc5 13.Qd1 Nd3 14.Qb3 Nc5 15.Qd1 Nd3.

10.0–0 h6 11.f4 0–0 12.f5 Bh7 13.Nc3 Nc5 14.Rc1 Nce4 15.g3 Rfd8.

10.Nc3 0–0 11.0–0 Nc5 12.f4 h6 13.f5 Bh7 14.Qc2 Nce4 15.g3 Nc3.

10.Nc3 Nc5 11.0–0 h6 12.f4 Nd3 13.Qb3 Nc5 14.Qd1 Nd3 15.Qb3 Nc5.

10.Nc3 Nc5 11.d3 0–0 12.0–0 A) 12...Rfe8 13.Qc2 (13.Nf3 Bh5 14.Qc2 Bf3=) 13...a6 14.a4+= (14.Nf3 Ne6=) 14...Ne6=; B) 12...a6 13.ba6 Na6 14.Ncb5 Be5+=.

10.Nc3 Be5 11.0–0 0–0 12.Na4 h6 13.f4 Bd6 14.Rf3 Ne4 15.Rh3 Ndc5.

10.Nc3 Ne5 11.0–0 Nd3 12.Qb3 Nc5 13.Qd1 Nd3 14.Qb3 Nc5 15.Qd1 Nd3.

10.Nc3 Ne5 11.d3 0–0 12.Qd2 c5 13.bc6 Nc6 14.Nc6 bc6 +=.

10.Nc3 h6 11.0–0 Nc5 12.f4 Nd3 13.Qb3 Nc5 14.Qd1 Nd3 15.Qb3 Nc5.

10.f4 h6 (10...Nc5 11.0–0 Nd3 12.Qb3 Nc5 13.Qd1 Nd3 14.Qb3 Nc5 15.Qd1 Nd3; 10...0–0 11.0–0 h6 12.f5 Bh7 13.Nc3 Nc5 14.Qc2 Nce4 15.Rac1 Nc3) 11.0–0 0–0 12.f5 Bh7 13.Nc3 Nc5 14.Rc1 Nce4 15.g3 Rfd8.

10.g3 Ne5 (10...0–0 11.0–0 Nc5 12.Nc3 h6 13.f4 Bd3 14.Ba3 Be2 15.Qe2 a6; 10...Nc5 11.0–0 h5 12.h4 0–0 13.Nc3 Rfe8 14.Ba3 Qd7 15.Re1 a6; 10...h5 11.Nc3 Nc5 12.h4 0–0 13.0–0 Rad8 14.Ba3 Rfe8 15.Re1 Nd3; 10...h6 11.Nc3 Nc5 12.0–0 0–0 13.f4 Bd3 14.Bd3 Nd3 15.Qb3 Nb2) 11.0–0 Nd3 12.Qb3 Nc5 13.Qd1 h5 14.Nc3 h4 15.Ba3 0–0–0.

6.cd5 Nd5

7.a4 (better 7.a3!?=+) 7...Nb4–+ 8.Nf3? (better 8.Na3 Nc5 9.Bc3 Nbd3 10.Bd3 Nd3 11.Kf1–/+) 8...Nc2 (better 8...Nc5!? 9.Nd4 Ncd3 10.Bd3 Nd3 11.Ke2 Nb2 12.Qb3 Bd3 13.Ke1–+) 9.Ke2 Na1 10.Ba1 Nb6 (10...Nc5 11.Bd4–+) 11.Nc3 Bb4 (11...Bd6 12.a5 Nd7 13.Ke1–+) 12.Nd4 (12.Na2 Bd3 13.Ke1 Bf8–+) 12...Bc3 (12...Bg6 13.Ke1–+) 13.Bc3 Bg6 14.Bb4 (14.Ke1 Nd5–+) 14...Qd7 (14...e5 15.Nf3 Bd3 16.Ke1–+) 15.Ke1 0–0–0 (15...e5!? 16.Nf3 e4 17.Nd4–+) 16.a5–/+ Nd5 17.Ba3 (17.Bc5 e5 18.Nf3 Rhe8–/+) 17...e5–+ 18.Nf3 (18.Nb3 Nc3 19.b6 ab6–+ (19...Nd1?! 20.ba7 Qd5 21.a8Q Kd7 22.Qb7 Qb7 23.Nc5 Kc6 24.Nb7 Rd2 25.Kd2 Nf2 26.Bb5 Kb7 27.Rc1–/+; 19...cb6?! 20.Qc1=)) 18...f6 19.b6 (19.d4 Be4–+) 19...cb6 20.ab6 Nb6 21.d4 ed4 22.ed4? (22.Nd4 Qd5 23.Qc1 Kb8 24.Nb5–+) 22...Rhe8 23.Be2 (23.Kd2 Qd5 24.Qc1 Kb8–+) 23...Nd5 (23...Re2 24.Qe2 Re8 25.Ne5 Qd4 26.Bb2 Qb4 27.Qd2 Qe4 28.Kf1 Qb1 29.Qc1 Qc1 30.Bc1 Re5 31.g4–+) 24.Kf1 (24.Kd2 Nf4 25.Bf1–+) 24...Nc3 25.Qc2 (25.Qc1 Qc7 26.Ba6 ba6–+) 25...Qc7 (25...Bc2 26.Bc4–+) 26.Bc5 (26.Bd3 Re2! 27.Qe2 Ne2 28.Ke2 Re8 29.Ne5 Re5 30.de5 Qe5 31.Kd2 Qa5 32.Kc2 Bd3 33.Kd3 Qa3 34.Ke2 Qa2 35.Kf3 Qd5 36.Kg3–+) 26...Ne2 (better 26...Bc2 27.Ba3–+) 27.g3 (27.Qc4 b6 28.Qa6 Kb8–+) 27...b6 (better 27...Bc2 28.Ne1 Nd4–+) 28.Qc4 bc5 29.Qa6 Qb7 30.Qb7 Kb7 31.Nh4 Nd4 (better 31...c4 32.Ng6 hg6 33.Kg2–+) 32.Ng6 hg6 33.Kg2 Re2 34.Rb1 Kc6 35.Kf1 Rde8 36.h4 Nf3 (36...Nf3 37.Kg2 Ne1 38.Kg1 Nd3–+) 0–1. AleksandrNekhoroshik (1730) – rajiniaerfan (1655), lichess.org, 2020.

7.Nf3 (7.a3 Nc5=+) 7...N7b6 (7...Nb4 8.Nd4 Nd3 9.Bd3 Bd3 10.Nc3–/+) 8.Be2 (8.Nc3 Nc3 9.Bc3 Nd5=) 8...Qd7 (8...Nb4!? 9.Nd4 Nd3 10.Bd3 Bd3–/+) 9.0–0= f6 10.Nd4 Bg6 11.a4 Bc5 (11...e5 12.Nf3=) 12.Nc3 (12.a5!? Nc8 13.a6+=) 12...Bd4= 13.Nd5?? (13.ed4 Nf4=) 13...Nd5?? (better 13...Bb2 14.Nb6 ab6–+) 14.Bd4+= (worse 14.ed4 0–0=+) 14...0–0 15.Bf3 (15.Bc4 Rfd8+=) 15...c6 (15...Bd3 16.Re1=) 16.Re1 (16.bc6!? Qc6 17.Qb3+=) 16...cb5= 17.Bd5 (17.ab5!? Qb5 18.Ba7=) 17...Qd5–/+ 18.ab5 Qb5 (18...b6 19.Qf3 Qf3 20.gf3–/+) 19.Ra7 Ra7 20.Ba7 Ra8 21.Bd4 e5 22.Bc3 Bd3 23.Qg4 e4?? (better 23...Qc6=+) 24.Bf6+– g6 (24...Qd7 25.Qd7 gf6+–) 25.h3 (25.Qe6 Kf8 26.Qe7 Kg8 27.Qg7) 25...Qf5+= 26.Qf5 (26.Qh4 b5+=) 26...gf5= 27.Kh2 (27.Rc1 Ra6 28.Bd4 Rc6 29.Rc6 bc6=) 27...b5 28.Ra1 Rc8 (28...Ra1!? 29.Ba1 Kf7=+) 29.Bc3 Kf7 (29...Rb8!?=) 30.Ra8?? (better 30.Ra7 Kg6 31.Ra6 Kh5 32.Be5+–) 30…Ra8–+ 0–1. AleksandrNekhoroshik (1755) – DANILOVIK (1685), lichess.org, 2020.

5.b5 Be7

6.a3 0–0 7.Nf3 c6 8.Be2 cb5 (8...dc4 9.bc6 Nc6 10.Bc4–/+) 9.cb5+= Nbd7 10.0–0 Nc5 11.d4 Nce4 12.Nbd2 (12.Nh4 Nd6=) 12...h6 (12...Bd6 13.Rc1+=) 13.Ne4= Ne4 14.Nd2 Bd6 15.f3 (better is 15.Rc1+=) 15...Bh2?? (better is 15...Qh4 16.f4 Rfc8+=) 16.Kh1?? (16.Kh2 Qh4 17.Kg1+=) 16...Ng3 (16...Qh4 17.fe4 Bg3 18.Kg1 Qh2) 17.Kh2= Qh4 18.Kg1 Qh1 19.Kf2 Qh4 20.Rg1?? (better is 20.f4 Nf1 21.Kf1=) 20...Ne4 21.Kf1 Qf2 0–1. zabazaba (1710) – pete59 (1645), gameknot.com, 2013.

6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 Be7 6.c4).

6.h3 0–0 7.Nf3 Nbd7 (7...a6 8.Nd4 Bg6 9.cd5 Nd5 10.Qb3–/+) 8.d3 (8.Nh4 Bb1 9.Qb1 Bd6=+) 8...dc4 9.Nbd2? (better 9.dc4!? a6 10.Be2=+) 9...Bd3 (9...cd3 10.Nh4 Be4 11.a3–+) 10.Bd3 (10.Nc4 Bf1 11.Rf1 a6 12.ba6 Ra6–+) 10...cd3 11.Nb3 Bb4 (11...e5 12.e4 Nc5 13.Nc5 Bc5 14.Ne5 d2 15.Qd2 Ne4 16.Qc2 Bf2 17.Ke2–+) 12.Nbd2 (12.Kf1 Qe7–+) 12...Nc5 (12...e5 13.0–0 e4 14.Ne5–+) 13.0–0 Qe7 (13...a6!? 14.Qb1 Bd2 15.Nd2–+) 14.Nc4–/+ Nfe4 15.a3? (better 15.Rc1!? d2! 16.Nfd2 Nd2 17.Nd2–/+) 15...Bc3–+ 16.Bc3 (16.Rc1 Bb2 17.Nb2 Rfd8–+) 16...Nc3 17.Nce5 (17.Qd2 Nb5 18.Qb4 c6–+) 17...Ne2 (better 17...Nd1 18.Rad1 Rfd8–+) 18.Kh1 Rfd8 19.a4 (19.Qe1 Qd6–+) 19...Ne4 (19...Nc3 20.Qe1 N5a4 21.Nd4–+) 20.Nd4? (better 20.Nd3 N2c3 21.Qc2–+) 20...Nd4 21.ed4 Rd4 22.f4 (22.Nf3 Rd5 23.Qe1–+) 22...Ng3 23.Kg1 (23.Kh2 Nf1 24.Qf1 d2–+) 23...Nf1 24.Qf1 Qc5 25.Kh1 d2 26.Rd1 Rad8 27.a5 (27.Nf3 Rf4 28.a5 Rf5–+) 27...Qc1! 28.Nf3 (28.Rc1 dc1Q Double attack) 28…Rc4 (28...Rc4 29.Kh2 Qc3 30.Rd2 Rd2 31.Nd2 Rd4–+ (31...Qd2?! 32.Qc4 Qa5 33.Qd3–+)) 0–1. alt20 – GetAnE_Meter (1615), lichess.org, 2016.

6.a4 Nbd7

7.Nf3 0–0 8.Be2 dc4 9.Bc4 Nb6 (9...c6 10.0–0+=) 10.Be2 Bd3 (10...c5 11.d3=) 11.0–0 (11.a5 Be2 12.Qe2 Nbd5=) 11...a6 (11...c6 12.bc6 bc6 13.Ne5 Be2 14.Qe2=) 12.Bd4 Be2 13.Qe2 ab5 (13...Nbd5 14.Nc3=) 14.ab5 (14.Bb6 cb6 15.Qb5 Ne4=) 14...Qd5 (14...Ra1!? 15.Ba1 Bd6=) 15.Nc3 Qh5 16.Bb6 cb6 17.h3 (17.Ra8 Ra8 18.e4 Ng4+=) 17...h6 (17...Ra5 18.Qc4=) 18.Qc4 (18.e4 Rfc8+=) 18...Rac8 19.Qb3 Rc7 20.d4 (20.Ra7 Rfc8+=) 20...Rfc8 21.Ne2 (21.Na4 Nd5+=) 21...Bd6 (21...Nd5 22.Ng3 Qg6 23.Ne5+=) 22.Rac1 (22.Rfc1 Rc1 23.Rc1 Rc1 24.Nc1 Nd5+=) 22...Qf5 (22...Nd5 23.Rc7 Nc7 24.Nc3+=) 23.Nd2 (23.Rc7 Rc7 24.Ra1 Qc2 25.Qc2 Rc2=) 23...h5 (23...Qh5 24.Rc7 Bc7 25.Nf3+=) 24.Rc7 Rc7 25.Rc1 h4 (25...Rc1 26.Nc1 Nd5 27.Nc4+/–) 26.Rc3 (26.Rc7 Bc7 27.Nf3 Ne4+/–) 26...g6 (26...Rc3 27.Nc3 (27.Qc3?! Qb5 28.Nc1 Qa4=) 27...Qg6 28.Qc4+/–) 27.Qb2 (27.Rc7 Bc7 28.Nf3 Ne4+/–) 27...Kg7 (27...Rc3 28.Nc3 (worse is 28.Qc3 Qb5 29.Nc1 Kg7=) 28...Qd3 29.Qc1+=) 28.Qc1 (28.Rc7 Bc7 29.Qb3 Bd6+/–) 28...Rc3 (28...Nd5 29.Rc7 Nc7 30.Nf3=) 29.Nc3+= (worse is 29.Qc3 Qb5 30.Nc1 Nd5=) 29...Bb4 30.Ndb1 Qd3 (30...e5 31.Qd1+=) 31.Qb2 Ba5 32.Qe2 Qf5 (32...Qe2 33.Ne2 Ne4 34.f3+=) 33.e4+/– Qg5 34.Qe3 (34.Qb2 Qf4 35.Qc2 e5+=) 34...Qh5 (34...Qe3 35.fe3 Bb4 36.Kf2+/–) 35.f3 (35.Qc1 e5 36.d5 Nd7+/–) 35...Qh8 (35...Ne8 36.d5+/–) 36.Qd3 (36.e5 Nd5 37.Nd5 ed5+/–) 36...Qc8 (36...Qh6 37.Kf2+=) 37.Ne2+/– Qc7 38.Nbc3 Nh5 39.e5 Qd7 (39...Nf4 40.Nf4 Qc3 41.Qc3 Bc3 42.Ne2+/–) 40.Ne4+/– Qd8 (40...Qd5 41.Nd6+/–) 41.Nd6 (41.Qc4 Qd7+/–) 41...Qg5 (41...Bb4 42.Nc4+/–) 42.Kf2 Ng3 (42...Bb4 43.Ne4 (43.Nb7?! Ng3=) 43...Nf4 44.Nf4 Qf4 45.Qb3+/–) 43.Ne4 (43.f4 Qh6 44.Qf3 Ne2 45.Ke2 Bb4+/–) 43...Ne4 44.Qe4 (44.fe4 Bd2+/–) 44...Bd2 (44...Qd2 45.Kg1=) 45.d5+/– (45.Qb7?? Qe3 46.Kf1 Qb3–+) 45...ed5 46.Qd5 (46.Qd4 Ba5+=) 46...Qe3 (46...Be3 47.Kf1=) 47.Kf1+= Bb4 48.Qd4 (48.f4 Qa3 49.Qd1 Qa5=) 48...Qd4 (48...Qb3 49.e6 (49.Qh4 Qd1 50.Kf2 Be1 51.Ke3 Qd2 52.Ke4 Bh4 53.g3 Qe2 54.Kd4 Bg3 55.f4 Bf4 56.Kc3 Be5 57.Kb3 Qd3 58.Kb4 Bd6 59.Ka4 Qc4) 49...f6 50.Nc1= (50.Qh4 Qd1 51.Kf2 Be1 52.Ke3 Qd2 53.Ke4 Bh4 54.e7 f5 55.Ke5 Bf6 56.Ke6 Qe2 57.Kd6 Qe7 58.Kd5 Qc5 59.Ke6 Qb5 60.f4 Qc6)) 49.Nd4 Bc3 50.e6 Kf6 (better is 50...f5!? 51.Ne2 Bd2+=) 51.ef7 (51.Ne2 Bb4 52.ef7 Kf7+=) 51...Kf7 52.Ne2 Bb4 53.Nf4 Bc5 54.Ke2 Kf6 55.Kd3 Kf5 56.Ne2 (56.Nd5 Ke5 57.Nc3 Bf8+=) 56...Ke5 (56...Bf2 57.Nc3+=) 57.Kc4 g5 58.Kd3 (58.Nc3 Bd4 59.Ne4 Be3+=) 58...Kf5 (58...Bb4 59.Kc2+=) 59.Nc3 Kf4 (59...Bd6 60.Kc4+=) 60.Ne4 Be7 61.Kd4 Bd8 (61...Bf8!?+=) 62.Kd5+/– Bc7 63.Ke6 Bb8 64.Kd7 Be5 65.Kc8 Bd4 66.Kb7 Be3 67.Kc6 Ke5? (67...Bd4 68.Kd5 Bg7 69.Kd6+/–) 68.Nd6?? (better is 68.Nc3+–) 68...Kf4 (68...Bf2 69.Nc4 Kf4 70.Nb6+/–) 69.Nc4 (69.Kd5!?+/–) 69...Bf2 70.Nb6 Kg3 71.Nd5 (71.Nd7 Kg2 72.Nc5 Kf3+= (worse is 72...Kh3 73.b6 g4 74.fg4 Kg4 75.b7+=)) 71...Kg2= 72.f4 g4 73.f5 (73.hg4 h3 74.b6 h2–+) 73...gh3? (73...Kg3 74.Nf4 Bd4+–) 74.Nf4 Kg3 75.Nh3! Kh3 76.f6 Kg2 (76...Bd4 77.f7 Bg7 78.b6+–) 77.f7 h3 78.f8Q h2 79.Qg8 Bg3 80.Qd5 Kg1 81.Qf3 (81.Qd4 Kg2 82.Qe4 Kg1 83.Qe3 Kg2 84.Qd2 Bf2 85.Qd5 Kg1 86.Qg8 Kf1 87.Qc4 Kg1 88.Qg4 Kf1 89.Qe4+–) 81...h1Q+/– 82.Qh1 Kh1 83.b6 Kg2 84.b7 Kf3 85.b8Q (better is 85.Kd5!?+/–) 85...Bb8= ½–½. Timmermans,Mark (2385) – Ducarmon,Quinten (2465), Dutch Championship Internet, 2016.

7.Nf3 0–0 8.Be2 c5 9.bc6= bc6 10.Nd4 Qb6 11.Nf5 ef5 12.Bd4 (12.Ra2 Rfb8=) 12...Bc5 (12...c5 13.a5 Qe6 14.Bc3=) 13.Bc5 (13.a5 Qd8 14.Bc5 Nc5=) 13...Nc5 14.cd5 (14.0–0 d4 15.Qc2 f4=) 14...cd5 15.0–0 d4 (15...Rfc8 16.Na3=) 16.Na3 (16.Qc2 f4=) 16...d3+= 17.Bf3 Nfe4 18.Nc4 (18.Nb5 Rab8+=) 18...Qb4 (18...Qa6 19.Na3–/+) 19.Ne5 (19.Be4 fe4 (19...Qc4 20.Ba8 Ra8 21.Ra3+–) 20.Nd6 f5+=) 19...Rac8 (19...Qd2 20.Qd2 Nd2 21.Ba8 Nf1 22.Bd5+=) 20.Be4 fe4 (worse is 20...Ne4 21.Nd3 Qa5 22.Rc1=) 21.Rc1 (21.Rb1 Qa4 22.Qa4 Na4–/+) 21...f6 22.Rc5 Qc5 (22...Rc5 23.Nd7–/+) 23.Nd7 (23.Qb3 Kh8 24.Nf7 Rf7 25.Qf7 a6+=) 23...Qc2–/+ 24.Nf8 Qd1 25.Rd1 Kf8 26.f3 ef3 27.gf3 f5 (27...Rc2 28.e4 f5 29.ef5=) 28.Kf2 (28.Rb1 Rc2 29.Rb8 Ke7 30.Rb7 Kd6 31.Rg7 Rd2–/+) 28...Rc2–/+ 29.Kg3 Kf7 (29...Ra2!?–/+) 30.Kf4= Ke6 (30...Kf6 31.e4=) 31.e4 fe4 (31...Ra2 32.Ke3=) 32.fe4 Rc4 33.Ke3 (33.Rg1 g6= (33...Ra4 34.Rg7 Ra3 35.Rh7+–)) 33...Ra4 (33...Ke5 34.Rg1 Re4 35.Kd3 Ra4 36.Rg7=) 34.Rg1 g6 35.Kd3 Ra3 (35...a5 36.Rg5=) 36.Kd4 Ra2 (36...a5 37.d3=) 37.Ke3 (37.d3 a5 38.Rg5 Ra4 39.Kc3 Ra3 40.Kc4 Ra4 41.Kb3 Ra1+=) 37...a5+= 38.h4 a4 39.h5 (39.Rb1!?+=) 39...gh5= 40.Rg5 Rb2 (40...Ra3!? 41.Kd4 Kf6 42.Rh5 Ra2=) 41.Rh5+= Rb8 (41...Rb3 42.d3+/–) 42.Rh7 (42.d4 Rb3 43.Kf4 a3+/–) 42...Ra8 43.Rh1 a3 44.Ra1 a2 45.d4 Ra3 46.Kd2 Ra4 47.Kc3 Kd6 48.Kd3 Ke6 49.Kc3 Kd6 ½–½. Timmermans,Mark (2385) – Ducarmon,Quinten (2465), Dutch Championship Internet, 2016.

5.c5 a5

6.a3 Nbd7 7.d4 (7.Nf3 ab4 8.ab4 Ra1 9.Ba1 Be7=) 7...ab4=+ 8.ab4 Ra1 9.Ba1 Qa8 (9...Be7 10.Nf3=+) 10.Nc3= Be7 11.Nf3 c6 (11...0–0 12.Bb5=+) 12.b5 (12.Be2 b6=) 12...0–0 13.Be2 (13.Qa4 Qa4 14.Na4 Ra8–+) 13...Qa5 (13...b6 14.cb6 cb5 15.0–0=+) 14.0–0 Ne4 (14...cb5 15.Bb5 Qc7 16.Bb2=) 15.Qb3 Bf6 16.Ne4 (16.Rc1 Ra8=) 16...Be4 (16...de4 17.Bc3 Nc5 18.dc5 (18.Ba5? Nb3 19.Bb4 ef3–+) 18...Bc3 19.Nd4=+) 17.Rc1 (17.Qc3!? Qc3 18.Bc3 Nc5 19.Bb4+=) 17...Nc5=+ 18.Qd1 Ra8 19.Bc3 (< 19.Rc5 Qa1 20.Rc1 Qa4 21.Qa4 Ra4 22.bc6 bc6=+) 19...Qa4?? (19...Qa3 20.Ra1 Qa1 21.Ba1 cb5 22.Bb5 Ra2+–) 20.bc6 Qd1 21.Bd1 bc6 22.Ne1?? Nd3 23.Nd3 Bd3 24.Bb4 Bb5 25.g4 Bd8 26.Kg2 f6 27.Kf3 Kf7 28.Be2 Be2 29.Ke2 Ra2 30.Kf3 Ra6 31.h3 e5–/+ 32.de5 fe5–+ 33.Bd6 Ke6 34.Bf8 Bf6 35.Kg3 e4 36.Bc5 Be5 37.Kg2 Kd7 38.Rb1 Kc7 39.Rb3 Ra2 40.Bb6 Kc8 41.Bc5 Rc2 42.Ba7 Ra2?? 43.Bc5 Ra5 44.Be7 Rb5 45.Ra3 Kb7 46.Bd8 c5 47.Ba5 c4 48.f4 ef3 49.Kf3 Rb3 50.Ra2 d4 51.Bd2 de3 52.Be3 Bd4 53.Re2 Be3 54.Re3 Kc6 0–1. Krueger,Bernhard – Wohlschlegel,Ansgar, Baunatal op 2nd, 1996.

6.a3 Be7 7.Nf3 ab4 8.ab4 Nc6 9.Bb5 0–0 10.0–0 (better 10.Bc6 bc6 11.Nd4=) 10...Nb4–/+ 11.d4 Ra1 12.Ba1 b6 13.Qb3 (13.cb6!? c6 14.Be2–+) 13...bc5–+ 14.dc5 Bc5 15.Rc1 Bd6 16.Nd4 c5 17.Nf5 ef5 18.Nc3 (18.Be2 f4–+) 18...c4 (18...Qb8!? 19.Be2 Bh2 20.Kh1–+) 19.Ne2?? (19.Qd1–+) 19…cb3 (19...cb3 20.Nd4 Qa5 21.Nf5 Qb5 22.Nd6 Qd7 23.Bf6 gf6–+) 0–1. ctrotter – pcmvr, net–chess.com, 2020.

6.Qa4 c6 7.Bd4 (7.Nf3 Na6 8.Ba6 Ra6=) 7...Nbd7 8.b5 (8.Bf6 Nf6 9.Nf3 b5 10.cb6 Qb6–/+) 8...e5–/+ 9.bc6 bc6 (9...ed4 10.cd7 Bd7 11.Qd4=) 10.Bc3 Qc7 (10...Nc5 11.Qd1 d4 12.ed4 ed4 13.Qe2 Be7–+) 11.d4=+ Ne4 12.Ne2 (12.Nf3 Be7=+) 12...ed4 (12...Be7 13.Nd2–/+) 13.Nd4 Ndc5 14.Qc6 Qc6 15.Nc6 Na4 (15...Nc3 16.Nc3 Kd7 17.Nd4=) 16.Bd2 (16.Bd4!?+=) 16...Nd2=+ 17.Nd2 Bd7 (17...Nc3 18.Nd4 Be4 19.f3=) 18.Ne5 (18.Rc1 Rc8 19.Bb5 Nc5–+) 18...Nc5 (18...Rb8 19.Nd7 Kd7 20.Bd3=+) 19.Rb1 Bf5 20.Bb5 (20.Rb6 Ke7=) 20...Ke7 21.Rc1 Kf6 22.f4 Be7 23.g4 Be4?? 24.g5 Ke6+/– 25.Ne4 de4 26.Bc4 Kf5 27.Bf1 Ke6+= 28.Bh3 f5 29.gf6 Kf6 30.Rc5! Bc5 31.Nd7 Ke7 32.Nc5+/– Rab8 33.0–0 Rb2 34.Ne4 Ra2 35.Rb1 Rd8 36.Rb7 Kf8 37.Bg4 Rd3 38.Ng5 Re3 39.Ne6 Ke8? 40.Ng7+/– Kf8 41.Ne6 Kg8 42.Kf1 h5? 43.Bh5 Rh2 44.Bg6 Rf3 45.Kg1 Rg3 46.Kh2 Rg6 47.f5 Rf6 48.Rb5 a4 49.Kg3 a3 50.Kg4 Rh6 51.Ra5 Rh1 52.Ra3 Rg1 53.Rg3 Rf1 54.Kg5 Kf7 55.Nd4 Rf2 56.Nf3 Ra2 57.Ne5 Kf8 58.f6 Ra5 59.Kf5 Ra7 60.Rb3 Rc7 61.Rb8 (61…Rc8 62.Rc8#) 1–0. Smid,Jaroslav – Hromas,Jan, Svetla nad Sazavou op, 1995.

6.Qa4 Nbd7 7.Bb5 =+.

6.a3 ab4

7.ab4 Ra1 8.Ba1 b6 9.cb6 c6 10.b5 +=.

7.ab4 Ra1 8.Ba1 c6 9.Nf3 b6 10.d4 bc5 11.bc5 Nbd7 12.Be2 Bb1 13.Qb1 Qa5 14.Nd2 (14.Kf1!?=) 14...Ne4+= 15.Qc1 Nd2 16.Bc3 Qa2 (better is 16...Nb3!? 17.Qb2 Qa4+=) 17.Qd2+= Qb1 18.Qd1 Qd1 19.Bd1 Be7 20.Ba4 Nb8 21.Ba5 Kd7 22.0–0 Bd8 23.Bd8 Rd8 24.Rb1 Kc7 25.Rb6 f6 26.Kf1 e5 27.f3 ed4 28.ed4 Re8 29.Kf2 f5 30.g3 h6 31.h3 g5 32.Bc2 f4 33.g4 Re3 34.Rb3 Rb3 35.Bb3 Nd7 36.Ke2 Nf6 37.Bc2 ½–½. Hal1958 – Josef1901, playchess.de, 2004.

7.ab4 Ra1 8.Ba1 Nbd7 9.Nc3 c6 10.Nf3 e5 11.d4 Bg4 (11...e4 12.Nd2=) 12.Be2 (12.de5 Ne5 13.Nd5 Nf3 14.gf3 Qd5 15.Qd5 Nd5 (15...cd5? 16.fg4 Be7 17.Bb5 Kf8 18.f3+–) 16.fg4 Nb4+=) 12...e4 13.Ne5 Be2 14.Ne2 g6 (14...Qc7 15.0–0=) 15.0–0+= Bg7 16.f4 (16.b5 Qc7=) 16...ef3 17.Rf3 0–0 18.Nf4 (18.Nd7 Qd7 19.Nc3 Qe6+=) 18...Qe7 (18...Ne5 19.de5 Ng4 20.Nd3+=) 19.Nfd3 (19.Nd7 Qd7 20.Nd3 Qe7+=) 19...Ne4 (19...Ne5 20.Ne5 Ne4 21.Rf1+=) 20.Bb2 Ne5 21.Ne5 (21.de5 Ra8+=) 21...h5 22.Qe2 Kh7 23.Rf1 f6 24.Nd3 Ra8 25.Ra1 Ra1+= 26.Ba1 Bh6 27.Bb2 Ng5 28.Nf2+= f5 29.Bc1 f4 30.Kf1= fe3 31.Qe3 Qe3 32.Be3 Ne4 33.Ke2 Bg7 34.Kd3 g5? 35.Nh3?? Kg6+= 36.g3 Bf6 37.Nf2 Kf5 Black intends g4 38.h3? g4?? 39.hg4+= hg4 40.Nd1? Bd8?? 41.Nc3?? Bc7 ½–½. Oze,Kristian (1845) – Ruttkay,Peter (2190), Berze mem 7th, 1996.

7.ab4 Ra1 8.Ba1 Be7 9.Nf3 Nc6 10.b5 (better is 10.Bb5!?=) 10...Nb4–/+ 11.Bf6 Bf6 (11...gf6?! 12.d4=) 12.d3 (12.d4 b6 13.c6 Nc2 14.Kd2 Nb4+=) 12...Qe7–/+ 13.d4 0–0 14.Na3 (14.Qb3!? Nc2 15.Kd1+=) 14...Ra8 15.Qb3 Ra3! 16.Qb4 (16.Qa3 Nc2 Double attack (16...Nc2 Decoy)) 16...Ra1 17.Ke2 Rb1 (17...b6 18.Rg1–+) 18.Qa3 (18.Qa4!? Rb2 19.Nd2–/+) 18...Rb5–+ 19.Nd2 b6 20.Nb3 bc5 21.Nc5 e5 22.Qa8 Qd8 23.Qd8 Bd8 24.Kd2? (better is 24.Kf3 Rb4 25.de5–+) 24...Rb2 25.Kc1 (25.Kc3 Rc2 26.Kb3 ed4 27.ed4 Bf6–+) 25...Rf2 26.de5 (26.g4 Bg4 27.Nd3 Bg5 28.Nf2 Be3 29.Kc2 Bf2–+) 26...Be7 (26...Rc2 27.Kd1 Rc5 28.h4–+) 27.Nb3 (27.Na6 Bc2 28.Kb2 Bd3 29.Kb3 Bf1 30.Rf1 Rf1 31.Nc7 Rf2–+) 27...Ba3 28.Kd1 Bg4 29.Ke1 Rb2 (29...Rb2 30.Nd2 Bb4–+) 0–1. Hal1958 – PLAYCHESS1963, playchess.de, 2004.

6.a3 b6

7.Qa4 c6 8.cb6 Nfd7 =+.

7.d4 ab4 8.ab4 Ra1 9.Ba1 Be7 10.Bd3 Bd3 11.Qd3 0–0 12.Nf3 Nc6 13.Bc3 Qa8 14.0–0 (14.b5 Na7 15.0–0 bc5 16.dc5 Qb7 (worse is 16...Bc5 17.Bf6 gf6 18.Qc3=) 17.Bf6 Bf6+=) 14...Qa4 15.cb6 (better is 15.Nbd2!? Nb4 16.Bb4 Qb4 17.Rb1=) 15...cb6–/+ 16.b5 Na7 17.Nbd2 Qb5 18.Qb1 Qa6 (18...Qb1!? 19.Rb1 Rc8–/+) 19.Bb4–/+ Bb4 20.Qb4 Nc6 21.Qb2 Ra8 22.Rb1 Nd7 23.g3 h6 24.h4 Qa4 25.Kg2 Na5 26.Ra1 Qc6 27.Rc1 Nc4 28.Kh3 Nb2 (28...Ra4 29.Kg2–+) 29.Rc6–/+ Kf8 30.Ne5 (30.Rc7 Ke8–/+) 30...Ne5–+ 31.de5 Rb8 (31...Nd1 32.f4–+) 32.Rc2 Nd3 33.f4 b5 34.Nb3 Nb4 35.Rc5 Nd3 36.Rc3 (36.Rc2 Ke8 37.g4–/+) 36...Nf2–+ 37.Kg2 Ne4 38.Rc7 Ra8 39.Rc2 (39.Nd4 b4–/+) 39...Ke8 (39...Ra3 40.Rb2–+) 40.Nd4 Rb8 (40...b4 41.Rb2 Ra4 42.g4–+) 41.Rb2–/+ Nc3 42.Kf1 Kd7 43.Ke1 h5 44.Ne2 (44.Rb3 b4–+) 44...Ne2 (44...Ne4 45.Nd4–+) 45.Ke2 Kc6 46.Kd3 Rb7 47.Kd4 b4 48.Rb3 (48.e4 de4 49.Ke4 Kb5–+) 48...Kb5 49.Rb1 (49.e4 Ka4 50.Rb1 de4 51.Ra1 Kb3 52.Ke4 Kc2 53.Ra2 Kc3–+) 49...Ka4 Black prepares the advance b3 50.f5 Ka3 51.fe6 fe6 52.e4 de4 53.Ke4 (53.Ra1 Kb2 54.Ra6 b3–+) 53...b3 54.Ra1 Kb2 55.Ra6 Kc2 56.Rc6 (56.Ra1 b2 57.Rf1 b1R 58.Rb1 Rb1–+) 56...Kd2 (better is 56...Kd1 57.Ke3 b2 58.Re6–+) 57.Rd6 (57.Ra6–+) 57...Ke2 0–1. rayfranke (2485) – zvujovic (2665), net–chess.com, 2016.

7.d4 Be7 8.Bd3 Bd3 9.Qd3 0–0 10.Nf3 ab4 11.ab4 Ra1 (11...Nc6 12.Ra8 Qa8 13.Ba3=+) 12.Ba1 bc5 (12...Nc6 13.Bc3=) 13.bc5= c6 (13...Nbd7 14.0–0=) 14.Nbd2 (14.0–0 Nbd7=) 14...Nfd7 (14...Qc7 15.0–0=) 15.h4 (better is 15.0–0=) 15...Nc5?? (better is 15...e5 16.de5 Nc5=+ (< 16...Bc5 17.Ng5 g6 18.Qc3+/–)) 16.dc5+/– Bc5?? (16...Qa5!? 17.0–0 Qc5+/–) 17.Qc3 Qf6 18.Qf6 gf6 19.Bf6 Nd7 20.Bc3 Be7 21.Rh3 Ra8 22.Rg3 Kf8 23.Rg4 h5 24.Rg7?? Ra3=+ 25.Nb1 Rb3 26.Nfd2? Rc3!–+ 27.Rf7 Kf7 28.Nc3 Bh4 29.Ke2 (29...Bf6 30.Nd1–+; 29.e4 Bf6 30.ed5 ed5–+ (30...cd5?! 31.Nb5–+)). katchum (1925) – redrook (2005), net–chess.com, 2002.

5.c5 c6

6.d3 Nbd7 7.Nf3 Qc7 8.Be2 Be7 (8...b6 9.d4=+) 9.Nh4= Bg6 10.Ng6 hg6 11.Nd2 e5 (11...Rh2!? 12.Rh2 Qh2–/+) 12.0–0 e4 Do you see the mate threat? 13.de4?? (better 13.h3=) 13…Qh2 0–1. ctrotter – mgilbert, net–chess.com, 2020.

6.Be2 (6.Nf3 b6=+) 6...Nbd7 (6...b6 7.d4=+) 7.g4 (7.d3 b6 8.g4 Bg6=+) 7...Bg6 (7...Be4!? 8.Nf3 Ng4–/+) 8.g5= Ne4 (better 8...Ng8!?=) 9.d3+– Ng5 10.f4 (10.h4 Ne4 11.h5 Nf2 12.Kf2 Bf5+–) 10...h6 (better 10...a5 11.a3 ab4 12.ab4 Ra1 13.Ba1 b6 14.fg5 Qg5+=) 11.Nd2?? (better 11.fg5 hg5 12.Nf3+–) 11...Nh7–/+ 12.Ngf3 Nhf6 13.Ne5 (13.Nb3 Qe7–/+) 13...Ne5 14.Be5 Nd7 15.d4 (15.Nf3!?–/+) 15...Ne5–+ 16.fe5 Qh4 17.Kf1 Be7 18.Nf3 Qh3 (18...Qe4 19.Qd2–+) 19.Ke1 Be4 20.Kd2 Bf3 (20...a5 21.b5–+) 21.Bf3–/+ Qf3?? (better 21...Bg5–/+) 22.Qf3+– 1–0. Agiant – LuisReyesMolina, lichess.org, 2018.

6.Bf6 Qf6–/+ 7.d4 (7.Nc3 a5 8.a3 Be7–/+) 7...e5 (7...a5 8.Qa4 Nd7 9.Nc3–+) 8.g4? (better is 8.Nf3!? Nd7 9.Nc3–/+) 8...Be4–+ 9.f3 Qh4 10.Kd2 Bb1 (10...Bg6!? 11.Nc3 ed4 12.ed4 Qh6 13.Ke2 Be7–+) 11.Rb1–/+ Nd7 12.Nh3 ed4 (12...Be7!?–/+) 13.ed4+= 0–0–0 14.Bg2 f5 15.Ng1? Qf2–+ 16.Qe2 Qd4 17.Qd3 Qd3 18.Kd3 fg4 19.Re1 gf3 20.Nf3–/+ h6 21.Nd4 b6?? 22.Nc6+/– bc5 23.Na7?? Kb7+= 24.Nb5 c4 25.Kd4 Nb6 26.a3 g5–/+ 27.Kc3 Bg7 28.Kc2 Rhe8?? 29.Re8+– Re8 30.Nd6 Kc6 31.Nf5 Re2–+ 32.Kd1 Rg2 33.Ng7 Ra2 34.Nf5 Ra1 (34...Ra1 35.Ke2 Rh1–+) 0–1. Baer,Cy (1895) – Schmitt,Harald (1860), RSS4D easy–53, 2007.

6.d4 Be7

7.a4 (7.Nc3 a5 8.b5 a4+=) 7...Nbd7 8.Nf3 0–0 9.Nc3 Bg4 (better is 9...b6!?–/+) 10.Be2 Bf3 (10...Qc7 11.h3 Bf5 12.Nh4=) 11.Bf3+= Qc7 12.0–0 e5 13.b5 e4 (13...Rfe8 14.Re1+/–) 14.Be2+/– Ne8 15.Qb3 Kh8 16.a5 f5? (better is 16...a6!? 17.bc6 bc6+/–) 17.a6+– f4 (17...Nef6 18.ab7 Qb7 19.Rfb1+–) 18.ef4 Rf4 19.Nd5 (better is 19.Na2!? Rb8 20.ab7 Rb7+–) 19...cd5 20.Qd5 Nef6 (20...Rd8 21.Bc4 Rf8 22.Qb7 (22.ab7?! Nc5 23.Qc6 Nd3+=) 22...Nc5 23.Qc7 Nc7 24.dc5 Bc5 25.Be5+/–) 21.Qb7 Rc8 22.Bc3 Nc5 23.dc5 Bc5 24.Be5! Qe5 25.Qc8 Ne8 26.Rac1 Bb6 27.g3 Rf8 28.Rc6 Bd4 29.Re6 (29.Re6 Qc5 30.Qe8+– (30.Re8?! Qc8 31.Rc8 Rc8+=)) 1–0. Levin,Anatoly – Messenger,Robert, Bedford Rating GpA, 2011.

7.Be2 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 0–0 11.Nf3 b6 12.Nc3 h6 13.Nh4 Bh7 14.0–0 Nbd7 15.Nf3 Qc7 16.Qa4 Rb8 17.h3 bc5 18.bc5 Rb7 19.Ne5? (better 19.Qd1=) 19...Ne5–+ 20.de5 Nd7 21.f4 (21.Qf4 Nc5 22.Rd1 f6–+) 21...Bc5 22.Nd1?? (22.Rf3–+) 22...Ra7 23.Qb3 Ra3 24.Qb2 Qa7 (24...Be3?! 25.Ne3 Qa7 26.Kh2 Re3 27.Qd2–+) 25.Qc1 (25.Nc3 Be3 26.Kh2 d4–+) 25...Re3! 26.Kh1 (26.Ne3 A pinning theme 26...Be3 Theme: Double Attack) 26...Re2 27.f5 (27.Nc3 Rc2 28.Qd1 Qa6–+) 27...Bf5 28.Nc3 Be3 29.Qd1 Rc2 30.Rf5 (30.Kh2 Rc1 31.Qc1 Bc1 32.Rc1 Qf2–+) 30...Rc1 31.Qc1 Bc1 (31...Bc1 32.Rf1 Qa1–+) 0–1. ctrotter – marekt, net–chess.com, 2020.

5.c5 Nc6

6.a3 a5 7.b5 Na7 =.

6.Qa4 a5!? –/+.

6.Qa4 a6 7.Nf3 (7.Bf6 Qf6 8.d4 Rb8=) 7...Nd7 8.d4 Be7 9.Qb3 0–0 10.Be2 Nf6 (10...b6 11.Qa4 Ncb8 12.0–0=) 11.0–0 Ne4 12.Nc3 Nc3 13.Bc3 Be4 (13...Nb8 14.a4=) 14.a4+= Bf6 15.Nd2 Qd7 (15...Bf5!?+=) 16.Ne4+/– de4 17.Bc4 (17.Qb1 Qd5 18.Bd1 Qc4+/–) 17...Ne7 (17...b5 18.Be2+/–) 18.Qc2 Nd5 19.Bd2 c6 (19...b5!? 20.cb6 Nb6+/–) 20.Qe4+– Rab8 21.a5 Bd8 22.f4 (22.Qd3 Bc7+–) 22...f5 23.Qd3 (23.Qf3 Bc7+/–) 23…Nf6 1–0. Heindrich,Janos (2080) – Kristof,Peter (1855), Miskolc Avas op–B, 1998.

6.b5 Nb8 7.d4 g6 (7...Be7!?=) 8.Nc3 c6 9.a4 Bg7 10.Bd3 Bd3 11.Qd3 0–0 12.Nf3 Nbd7 13.0–0 Qc7 14.a5 b6 (14...cb5 15.Nb5 Qc6 16.Nc3=) 15.cb6+= ab6 16.a6 c5 17.Ba3 c4 18.Qc2 Rfe8 19.h3 e5 20.de5 Ne5 21.Nd4 Bf8 (21...Ra7 22.Rfd1+=) 22.Bf8+/– Kf8 23.Na2 Ne4 24.Nc3 Nc3 (24...Nf6 25.Nce2 Ra7+/–) 25.Qc3+/– Qc5 26.Qa3 Nd3 27.Qc5 bc5 28.Nc6 Nb4 29.Nb4 cb4 30.b6 b3 31.b7 (31.Ra5 Reb8 32.b7 Ra7+/–) 31...Ra7+= 32.Ra5 c3?? (32...Ke7 33.e4 Rb8 34.ed5 c3+/–) 33.Rb5+– b2 34.b8Q Rb8 35.Rb8 Ke7 36.Rc8 Ra6 37.Rc3 Ra1 38.Rb3 1–0. Hal1958 – Mbueno, playchess.de, 2002.

6.Bb5 a6 7.Bc6 bc6 =.

6.a3 Be7

7.d4 0–0 8.Be2 h6 (8...Be4!? 9.Nf3 a5=+) 9.Nf3= Ne4 10.0–0 a6 11.Nbd2 Nd2 12.Qd2 Be4 13.Rac1 Bg5 14.Qc3 Qf6 (14...Bf6 15.Rfd1+=) 15.Ng5 Qg5 16.f3 Bf5 17.f4 Qg6 18.Rf3 Qg4 (18...Be4 19.Rg3 Qf5 20.a4=) 19.Bd3 (19.a4 Be4 20.Rf2 Qf5=) 19...Bd3= 20.Qd3 Ne7 21.Rg3 Qf5 22.Qc2 Qc2 23.Rc2 c6 24.Kf2 a5 25.Bc3 ab4 26.ab4 Ra3=+ 27.Bd2 Rfa8 28.Rg4 Ra2 29.Ra2 Ra2 30.Ke2 Nf5 31.h4 h5–+ 32.Rg5 f6 33.Rf5 ef5 34.Kd3 Kf7 35.g3 Ke6 (36.Bc3 g6–+) 0–1. Psion – Psion, 4 Min/Zug, 1989.

7.Nf3 0–0 8.Bb5!?

7.Nf3 0–0 8.Be2 a5 9.b5 Nb8 10.Bd4 =+.

7.Nf3 0–0 8.Be2 a6 9.d4 (9.0–0 b6=) 9...Ne4 10.Nbd2 Bf6 (10...Nd2 11.Qd2 Be4 12.0–0=) 11.0–0 Re8 12.Ne5 Be5 13.de5 Nd2 (13...Qg5 14.Nf3 Qg6 15.Nh4+=) 14.Qd2+= Qg5 15.f4 Qg6 16.Rf3 f6?? (better is 16...Red8=) 17.Rg3 Qf7 18.ef6 g6 19.h4 Rad8 20.h5 e5 21.hg6 hg6 22.fe5 Ne5 23.Rf1 Kf8?? 24.e4!+– de4 25.Qh6 Kg8 26.Rf5 (26...Nf3 27.gf3 Rd5 28.Rg6 Qg6 29.Qg6 Kf8 30.Qg7#) 1–0. Gross,Wilhelm – Merten,Rainer, xx, 1990.

7.Nf3 0–0 8.Be2 Qd7 9.0–0 a6 10.d3 a5 11.Nbd2 (11.b5!? Na7 12.b6 cb6 13.cb6=) 11...ab4–/+ 12.Nb3 ba3 13.Ba3 b6 14.d4 Bg6 15.Bb5 Bh5 16.Qc1 Bf3 17.gf3 Rab8 (17...Rfb8 18.Qc3–/+) 18.cb6 (18.Qc2!?=+) 18...Rb6–/+ 19.Be7 Qe7 (< 19...Rb5 20.Bf8 Rb3 21.Bc5+=) 20.Bc6 Rb3 21.Ra7 Rfb8 22.Kh1 e5 23.Qd1 Rb2 24.Qd3 ed4 25.Qd4 Qd6 26.Ba4 (26.Qc3 Kh8 27.Ra5 R2b4–+) 26...c5 27.Qh4? (27.Qd3–+) 27...Qb6 28.Re7 (28.Rg1 g6 29.Rd7 Rb4–+) 28...Rb4 (29.Qg3 Ra4–+) 0–1. Sternik,Ryszard – Mephisto Exclusive, Olsztyn, 1993.

7.Nf3 0–0 8.Be2 Ng4 9.0–0 Bf6 10.Bf6 Qf6 11.d4 e5 12.Nc3 (12.b5 Ne7 13.h3 ed4 14.Qd4 (worse is 14.hg4 d3+=) 14...Qd4 15.Nd4+=) 12...ed4 (better is 12...Qh6!? 13.Nd5 e4=) 13.Nd4 (13.Nd5 Qh6 14.h3 Be4 15.Nc7 Rac8 16.hg4 Rc7 17.Nd4 Rd7+–) 13...Nd4 14.ed4 (14.Bg4 Nc2 15.Bf5 Na1 16.Nd5 Qd8+/–) 14...Qh4+= 15.Bg4 Bg4 16.Qd2 Be6 17.a4 (17.f4 Qh6+=) 17...Rfe8 18.Rfe1 c6 19.b5 Bd7 20.bc6 bc6 21.Rab1 Re1 22.Re1 h6 23.Na2 Rb8 24.g3 (24.Nb4 Qf6=) 24...Qh3 25.Qc2 Bf5 26.Qc3 Be4 27.f3 Bg6 28.Nb4 Qd7 29.Nd3 Bd3 30.Qd3 Re8 31.Re8 ½–½. Hal1958 – Yannick, playchess.de, 2005.

5.c5 Be7

6.Bb5 c6 7.Be2 0–0 =+.

6.Nf3 a5 7.a3 =+.

6.Nf3 h6 7.a3 (7.Qa4 A) 7...Nbd7 8.Nd4 Bb1 9.Rb1 c6 10.Nb3 0–0 11.Be2 Qc8 12.Qa3 e5=; B) 7...Qd7 8.Qd7 (8.Bb5 c6 9.Be2 b6 10.b5 a6 11.bc6 Qc6 12.Qc6 Nc6=) 8...Nbd7 9.Nd4 Bb1 10.Rb1 a5 11.a3 ab4 12.ab4 Ra2=; C) 7...c6 8.Be2 a5 9.Bf6 Bf6 10.d4 b5 11.cb6 Qb6 12.a3 Ra7+=; 7.Be2 0–0 (7...a5 8.a3 0–0 9.0–0 b6 10.cb6 cb6 11.b5 Qd7 12.Nc3 Rc8=3) 8.0–0 (8.a3 b6 9.d4 a5 10.0–0 ab4 11.ab4 Ra1 12.Ba1 c6=) 8...b6 9.d4 a5 10.a3 ab4 11.ab4 Ra1 12.Ba1 c6=) 7...0–0 8.Nc3 (8.Be2 b6 9.d4 a5 10.0–0 ab4 11.ab4 Nc6 12.Qb3 Ra1=) 8...c6 (8...a5 9.Be2 ab4 10.ab4 Ra1 11.Ba1 Nc6 12.Qb3 d4+=) 9.Ne2 (9.d4 a5 10.b5 b6 11.Na4 bc5 12.dc5 cb5=) 9...Nfd7 (9...b6 10.cb6 ab6 11.Ng3= Bg4 12.h3 Bf3=) 10.Ng3= Bg6 11.Be2 Bf6 (11...b6 12.d4 a5=) 12.d4 (12.Bf6 Qf6=) 12...Re8 (12...a5=) 13.Ne5 Ne5 14.de5 Be7 15.Bd3 Bd3 16.Qd3 a5 17.0–0 Na6 18.Bc3 ab4 (18...b6 19.cb6 Qb6 20.ba5=) 19.ab4+= Nc7 20.Ra8 Qa8 21.Ra1 Qb8 22.f4 Nb5 23.Bd4 Nd4 24.ed4+= b5 25.Ra6 Rc8 26.Qa3 Qc7 27.Ra7 Qd8 28.Qa6 g6?? 29.Re7!+– Rc7 30.Rc7 Qc7 31.Ne2 Kg7 32.Nc1 Kg8 33.Nb3 Kf8 34.Na5 Ke8 35.Nc6 Kd7 36.Na7 Kd8 37.Qd6 Qd6 38.ed6 (38.ed6 Kd7 39.Nb5+–) 1–0. Lien,Gaute – Snahre,Stig A, Norwegian Open, Oslo NOR, 2005.

6.h3 0–0 7.d3 a5 8.a3 h6 (8...ab4 9.ab4 Ra1 10.Ba1–/+) 9.Nf3=+ ab4 10.ab4 Nc6 (10...Ra1 11.Ba1 Na6 12.Bc3=+) 11.Qb3 (11.Ra8 Qa8 12.Qd2 Qa4=+) 11...b6 (11...Ra1 12.Ba1 b5 13.Be2=+) 12.Qc3 (12.Ra8 Qa8 13.b5 Na5=+) 12...Ra1=+ 13.Ba1 Qa8 14.Na3 Nb4 15.Be2?? (15.Qb4 Bc5) 15...Qa3!!–+ (15...bc5?! 16.0–0–+; 15...Bc5?! 16.Bb2–+) 16.Qa3 Nc2 17.Kd2 (17.Kd1 Na3 18.g4 Bg6–+) 17...Na3 18.cb6 cb6 19.g4 Bb4 20.Kd1 Bg6 21.Bf6 gf6 22.Ne1 Rc8 23.h4 Nb1 24.Bf3 Be1 25.Re1 Bd3 26.e4 de4 27.Bg2 Rc2 28.Re3 Rf2 29.Bh3 Rh2 30.Kc1 Nc3 31.g5 Rc2# 0–1. Rush,Bradley – Wall,William Dale, IECG 7PSRR–2.033, 1996.

6.d4 0–0

7.Bd3 Re8 8.Ne2 Bd3 9.Qd3 Bf8 (9...Na6!? 10.b5 Nb8=) 10.0–0= Nbd7 11.Nd2 g6 (11...Be7 12.Nf4=) 12.Rfc1 c6 13.a4 Qc7 14.h3 Bg7 15.b5 e5 16.de5 Ne5 17.Be5 Re5 18.Nd4 Rae8 19.bc6 bc6 20.Qa6 Ne4 21.Ra2 (21.N2b3 Rb8 22.Rab1+/–) 21...Nf2?? (better is 21...Rc8=) 22.Kf2+– Re3 ½–½. Stecki,Witold – Wgalow, Rydzyna, 1989.

7.Nf3 a6 8.a4 (8.Bd3 Bd3 9.Qd3 b6=) 8...b6=+ 9.Qc1 (9.a5 Nc6 10.Bc3 Ne4 11.ab6 cb6=+) 9...a5 (9...Ne4 10.Nfd2=+) 10.b5 bc5 11.dc5 c6 (11...Ne4 12.Bd4=+) 12.Nd4= cb5 (12...Bg6!?=) 13.Nf5+= ef5 14.ab5 Nbd7 (14...Qc7 15.Bd4+=) 15.c6 Bb4 16.Bc3 Bc3 17.Nc3 (17.Qc3 Ne4 18.Qd4 Ndc5=) 17...Nb6 18.Be2 (18.Na4 Re8+=) 18...Re8 (18...f4!?+=) 19.0–0+/– d4 (better is 19...Qc7!? 20.Rd1 f4 21.ef4 a4+/–) 20.Rd1+– Qc7 (20...Re6 21.Na4+–) 21.ed4 Qd6 22.Bf3 Nfd5 23.Bd5 Nd5 24.Nd5 Qd5 25.Qc5 Qe4 26.b6 Rac8 27.c7 Re6 28.d5 Ree8 29.d6 Re5 30.d7 (30...Rc7 31.Qe5+–) 1–0. Hummel,Erik Jan – Huistra,Pieter, NED–ch U14 Leiden, 1998.

7.Nf3 b6 8.Be2 =+.

7.Nf3 c6 8.a4 b6 9.a5 b5 (9...Nbd7 10.Bc3+=) 10.Nbd2 Na6 11.Qb3 Qc7 12.Be2 Nd7 13.Ne5 (13.0–0 Rad8=) 13...f6 (13...Ne5 14.de5 f6 15.Nf3=) 14.Nd7 Qd7 15.f3 Kh8 (15...Rae8 16.e4 Bg6 17.0–0=) 16.h4 (16.0–0 Bg6+=) 16...Qc7 17.g4 Qg3 18.Kd1 Qg2 19.Re1 Bg6 20.h5 Bf7 21.Bd3 f5 22.h6 gh6 (22...fg4 23.hg7 Kg7 24.Kc2=) 23.gf5+= ef5 (23...Bh5 24.fe6 Bf3 25.Nf3 Qf3 26.Kc2+=) 24.Kc2 (24.Bf5 Rad8+/–) 24...Bg6 25.Re2 Qg3 26.e4 (26.Rh1 Rae8+=) 26...fe4= 27.fe4 Bg5 28.Ba3? (28.Rd1 Bh5 29.ed5 Be2 30.Be2 Qg2 31.dc6 Qe2 32.d5 Bf6–+) 28...Nc7 (28...Bd2 29.Kd2 Rf3 30.Rae1 de4 31.Re4 Rf2 32.Kc3 Be4 33.Re4–+) 29.Bb2 Rae8 (29...Bd2 30.Rd2 de4 31.d5 Kg8 32.Qc3 ed3 33.Kb3–/+) 30.e5–/+ Ne6 (30...Qg4 31.Rh2–/+) 31.Bg6 Qb3 32.Nb3 hg6 33.a6 Nf4 (33...Kg7 34.Na5 Rc8 35.Nb7–/+) 34.Rh2 Kg7 35.Na5 Re6 36.Rf1 Bd8 (36...Ng2! 37.Rf8 Ne3 38.Kd3 Kf8+=) 37.Nb7= Be7 38.Rhf2 g5 39.Bc1 Rg6 (39...Ng6!?=) 40.Bf4+= gf4 41.Rf4 Rf4 42.Rf4 Rg2 43.Kb3 (43.Kd3!?+=) 43...Rg3= 44.Ka2 Rg2 45.Kb3 Rg3 ½–½. Levin,Anatoly – Haring,Ru (1975), US Amateur Team–ch East, Parsippany USA, 2010.

6.Nf3 0–0

7.a3 b6 8.Bf6 Bf6 =+.

7.d3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Na6 11.Qb3 Qd7 12.d4 Ra8 13.Bb2?? (better is 13.Ne5 Qd8 14.Bc3=+) 13...Bb1–+ 14.Be2 Nb8 15.b5 Ba2 16.Qc2 b6 17.0–0 bc5 18.dc5 c6 19.Ra1 Qa7 20.Bd4 Qa4 21.Qb2 Qa3 22.Qc2 cb5 23.Bb5 Qb4 24.Bd3 Bb3 25.Qb2 Ra1 26.Qa1 Qa4 27.Qc1 Nc6 (28.Qd2 Ne4–+) 0–1. Gross,Wilhelm – Merten,Rainer, xx/06, 1990.

7.Nd4 Bg6 8.f4 a5 9.a3 b6 (9...ab4 10.ab4 Ra1 11.Ba1=+) 10.cb6=+ cb6 (10...ab4 11.bc7 Qc7 12.ab4 Ra1 13.Ba1 Bb4 14.Bc3=+) 11.b5 (11.ba5 Ra5 12.Bb5 Ne4=+) 11...Ne4 12.Be2 Bh4 13.g3 Bf6 14.a4 (14.0–0 Qd7=+) 14...e5 (14...Nd6 15.Bc3=+) 15.fe5= Be5 16.Bf3 (16.0–0!?=) 16...Qg5=+ 17.Qe2 (17.Qb3 Ra7 18.Kf1 Rd8–/+) 17...Nd7 (better is 17...Nc5 18.Kd1 Bd4 19.ed4 Qf5–/+) 18.Be4? (better is 18.0–0=+) 18...Be4–+ 19.Rf1 Nc5 20.Ra3 Bd4 21.ed4 Bb1 22.dc5–/+ bc5 23.Re3 Qg6 24.Rf4–/+ d4 25.Rg4 Qc2–+ 26.d3? Qb3 27.Re7 Bd3 28.Re3 Be2 29.Rb3 Bg4 (30.Ra3 Rfe8 31.Kf1 Rad8–+) 0–1. Streit,Bodo – Voll,Andreas, Germany, 2006.

7.Be2 a5 8.a3 Na6 9.Ba6 Ra6 10.b5 Ra8 11.d4 Ne4 12.0–0 Qe8 13.Qe2 Bg4 14.Nc3 f5 15.h3 Bh5 16.Ne4?? (better is 16.Kh2–/+) 16…fe4–+ (16...de4?! 17.Rfd1–+) 0–1. Peter,Falco – Lahr,Marcus (2050), Karl Mala mem op 9th, 2005.

7.Be2 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Nc6 11.Bc3 Ne4 12.0–0 Bf6 (12...Nc3 13.dc3 Bf6 14.Nd4=) 13.Bf6 Qf6 14.b5 Na5 15.d4 h6 16.Ne5 Qe7 17.f3 Ng5 18.h4 (18.Nc3 f6 19.Ng4 b6+=) 18...Nh7= 19.g3 f6 20.Nd3 Nc4 21.Qc1 e5 (21...c6 22.e4 Bh3 23.Rd1+/–) 22.g4 (22.Nb4 Na5 23.Nd5 Qf7+=) 22...Bd7 (better is 22...Be6=) 23.de5?? (better is 23.Nb4 f5 24.Nd5 (24.Bc4?! dc4 25.Qc4 Be6=) 24...Qh4 25.Qe1 (25.Qc4?! Qg3 26.Kh1 Qh3 27.Kg1 Qg3 28.Kh1 Qh3 29.Kg1 Qg3=; 25.Bc4?! Qg3 26.Kh1 Qh3 27.Kg1 Qg3 28.Kh1 Qh3 29.Kg1 Qg3=) 25...Qe1 26.Re1+–) 23...fe5–/+ 24.e4 (24.Nb4!? Qc5 25.Nd5 Bb5 26.Nc7 Qc7 27.Na3+=) 24...Qh4–+ (24...Bb5?! 25.Nc3 c6 26.ed5 Qh4 27.Kg2+=) 25.ed5 Ng5 (better is 25...Qg3 26.Kh1 Bb5–/+) 26.Qc4= Qg3 Increases the pressure on the backward pawn 27.Kh1 Nf3 (better is 27...e4!? 28.Nd2 ed3 29.Bd3 Rf4–+ (29...Nf3?! 30.Nf3 Rf3 31.d6 Kh8 32.Rf3 Qf3 33.Kh2=)) 28.Bf3+/– Rf3 29.d6 Kh8 30.Rf3 Qf3 31.Kh2 Bg4 32.Ne5 Qf2 33.Kh1 Bh3?? (33...Qh4!? 34.Kg2 Qh3 35.Kg1 Qg3 36.Kh1 Qh4 37.Kg1 Qg3 38.Kh1 Qh4=) 34.Nf7 (34.Qd5!? Bg2 35.Qg2 Qe1 36.Kh2 Qe5 37.Qg3 Qb2 38.Kh3 cd6 39.cd6 Qb1=) 34...Kh7+/– 35.Qd3?? (better is 35.Qd5 Qh4 36.Qe5+=) 35...Bf5–+ 36.dc7 (36.Qc4 Qe1 37.Kh2–+) 36...Bd3 37.c8Q (37.Ng5 hg5 38.Nd2 Qd2 39.Kg1 Qe1 40.Kg2 Be4 41.Kh2 Qd2 42.Kg3 Qg2) 37...Be4 (37...Bb1 38.Nd6 b6 39.Qc6 Qc5 40.Qc5 bc5 41.Kg1–/+) 0–1. hal1958 – prince_sad, playchess.de, 2003.

7.Be2 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Nbd7 11.0–0 Qa8 12.Nc3 c6 (12...Qa3 13.d4 Qb4 14.Nh4=) 13.d4 Qa3 14.Qa4 (14.Nh4 Qb4 15.Nf5 ef5+=) 14...Ra8 15.Qa3 Ra3 16.Nd2 b5 ½–½. Hal1958 – Jmcerna, playchess.de, 2004.

7.Be2 a5 8.a3 b6 9.d4 c6 10.Ne5 Qc7 11.Nd2 Nbd7 12.Ndf3 (12.g4 Bg6 13.g5 Ne8 14.Ng6 hg6=) 12...Bg4 (12...Rfb8 13.Bc3–/+) 13.0–0 Bf3 14.Nf3 (worse is 14.Bf3 Ne5 15.de5 Nd7+=) 14...Ne4 15.Qc2 Bf6 (15...b5 16.Bd3+=) 16.Rfc1 (16.Bd3 Rfb8 17.cb6 Qb6 18.Be4 de4 19.Qe4 ab4 20.ab4 Ra1 21.Ba1 Be7+/–) 16...b5 (better is 16...ab4!? 17.ab4 bc5 18.bc5 e5+=) 17.Bd3+/– e5 18.Be4 de4 19.Qe4 ed4 20.Bd4 Rfe8 21.Qf5 Ne5 22.Ng5 Bg5 23.Qg5 ab4 24.ab4 Nd3?? (better is 24...f6 25.Qf4 Ra1 26.Ra1 Qd7+/–) 25.Qg7# 1–0. Coupe,Nicolas (2000) – Graciette,P, Orleans op, 2004.

7.Be2 c6 8.a4 (8.0–0 b6=) 8...h6 (8...a5!?–/+) 9.0–0 (9.a5 Be4=) 9...Nbd7 (9...a5 10.Qb3+=) 10.d4 b6 11.Ne1 bc5 12.bc5 Rb8 13.Bc3 Ne4 14.Bd3 Rb1! 15.Qb1 (15.Rb1 Nc3 Double attack (15...Nc3 Decoy; 15...Nc3 Remove defender); 15.Qb1 Nc3 Remove defender; 15.Bb1 Nc3 Double attack (15...Nc3 Decoy; 15...Nc3 Remove defender)) 15...Nc3 16.Qc2 Bd3 17.Nd3 Ne4 18.Nb4 Qc7 19.Rab1 a5 20.Na2 e5 21.Nc3 Nc3 22.Qc3 Bf6 23.Rb3 ed4 24.ed4 Re8 25.Rbb1 Re4 26.Rbd1 Nf8 27.Rfe1 Re1 28.Re1 Ne6 29.Rd1 (29.Qd2 Qd8–+) 29...Nd4 30.Rd4 Qe5 (30...Qe5 31.Qa5 Qd4–+; 30...Bd4?! 31.Qd4 Qb8 32.g3–+) 0–1. Hal1958 – QRP4ME, playchess.de, 2002.

7.Be2 Nc6!? 8.a3 a5!? 9.Bb5!

7.Be2 h6!

8.0–0 a5 9.a3 Na6 (9...b6 10.cb6 cb6 11.b5=) 10.Qb3 b6 11.Ba6 (11.cb6!? cb6 12.Nd4+=) 11...Ra6=+ 12.b5 a4 13.Qc3 Ra5 (13...Ra8 14.cb6 cb6 15.d3=+) 14.cb6= cb6 15.Nd4 Qd7 (15...Qe8 16.Rc1=) 16.Rc1 (16.Qc6 Bb1 17.Rab1 Bc5=) 16...Bc5 (16...Bg6 17.Qc7 Qc7 18.Rc7–/+) 17.Qa5 (better is 17.Nf5!? ef5 18.Qd3=) 17...ba5–/+ 18.Rc5 Bd3 19.Nc3 Rb8 (19...Qe7 20.Na4 Ne4 21.Rcc1–/+) 20.Rc1=+ Ne4 21.Ne4 de4 (< 21...Be4 22.f3 Bh7 23.Nc6+=) 22.Rc7 Qd5 23.Nc6 Qb5 24.Nb8 Qb2 25.Nd7 h5 26.R7c3 Qd2 27.Nc5 h4 28.h3 g5 29.Nd7 Kg7–/+ 30.Ne5 Qb2 31.Kh1 Be2 32.Kg1 Bd1 33.Nf7 Kf7–/+ 34.Rc7 Kf6 35.Rd1 Qa3 36.Rcc1 Qb2 37.Rb1 Qc2 38.Rdc1 Qd3 39.Rb2 Qd5 40.Ra1= Qf5 41.Ra4+/– g4 42.hg4 Qg4 43.f3 Qg3=+ 44.Rf2 h3 45.fe4 Ke7 46.Raa2 hg2 47.Rae2 Qh4–/+ 48.Rg2 Qe4 49.Rgf2 a4 50.Kh2 a3 51.Kg1 Qg6 52.Kh2 Qh6 53.Kg1 e5 54.Rh2 Qg6 55.Rhg2 Qb1 56.Kh2 Qh7 57.Kg1 Qb1?? 58.Kh2 Qe4 59.Rg7 Kf6 60.Rgg2 Qh7–+ 61.Kg1 Qb1 62.Kh2 Qh7?? 63.Kg1= ½–½. Izoitko,A – Reshetov,V, St Petersburg, 2004.

8.0–0 c6 9.a3 Nbd7 (9...b6 10.d4=) 10.d4 (10.d3 Qc7=) 10...Qc7 11.Nbd2 Ne4 12.Ne4 Be4 13.Nd2 Bh7 (13...Bg6 14.Re1=) 14.Qb3 e5 (14...Bf5 15.Nf3=) 15.de5 Ne5 16.Nf3 (16.Rfd1 Bf5=) 16...Bf6 (16...Nf3 17.Bf3 Rad8 18.Bd4+=) 17.Nd4 (17.Be5 Be5 18.Ne5 Qe5=) 17...Rfe8 18.Rac1 a6 19.a4 Qd7 20.h3 (20.Qc3 Be4=) 20...Be4 21.Rfd1 Rad8 (21...Qe7 22.Qc3=) 22.b5 (22.f3 Bf5=) 22...ab5 (22...Ra8 23.Ra1=) 23.ab5 Ra8 24.f3 (24.Ra1 Qe7 25.Qc3 b6=) 24...Bg6 (24...Bh7 25.Ra1=) 25.f4+= Nc4 26.Bc4 dc4 27.Rc4 Be4 28.Nc6 (better is 28.Rb4+=) 28...Qc7? (better is 28...Bd5!? 29.Rb4 bc6 30.Bf6 gf6=) 29.Nb4 (29.Bf6!? gf6 30.Nb4 Qa5+–) 29...Bb2 30.Qb2 f5 31.b6 (31.Qc3 Qf7+–) 31...Qf7 (31...Qe7 32.Qc3+–) 32.Rcd4 Qg6 (32...Rac8 33.Rd7 Re7 34.Rd8 Re8 35.Rc8 Rc8 36.Qe5+–) 33.Kh2 Ra3?? (better is 33...Qf7+–) 34.Rd6 (34...Qg2 35.Qg2 Bg2 36.Kg2 Ree3 37.c6 Rg3 38.Kf2 Rgf3 39.Ke2 Rfe3 40.Kd2+–; 34.Re4!? Re3 35.Re8 Qe8+–) 1–0. Gross,Wilhelm – Merten,Rainer, xxiv/07, 1993.

8.0–0 Nbd7 9.Nh4 (9.Nd4 a5 10.Nf5 ef5+=) 9...Bh7= 10.f4 (10.a3 a5=) 10...c6 (10...a5 11.a3=) 11.Nf3 b6 (11...a5 12.a3=) 12.Nd4 Qc7 13.cb6 (13.Qa4 bc5 14.Nc6 Nb6=) 13...Qb6=+ 14.a3 (14.Bc3 Ne4=+) 14...c5–/+ 15.Nb3 (15.Nc2 Bc2 16.Qc2 cb4 17.ab4 Rfc8–/+ (17...Qb4? 18.Ba3 Rfc8 19.Qa2+–; 17...Bb4?! 18.Bd4 Bc5 19.Ra6=+)) 15...cb4 16.Bd4 (16.ab4 Bb4 (16...Qb4? 17.Ba3 Qb7 18.Be7+–) 17.Bd4 Qc7–/+) 16...Qc7 17.ab4 Bb4 18.Nc3 Bc3 (18...a5 19.Rc1 Qb7 20.Na4–/+) 19.Rc1 (19.Bc3 Rfb8=+) 19...Rfc8 (19...Ne4 20.Bc3 Nc3 21.Rc3–/+) 20.Rc3 Qd8 21.Qa1 Rc3 22.Bc3 Qb6 23.Nd4 Rb8 (23...a5 24.Bb5=+) 24.Nb5 a6 25.Bd4 Qb7 (25...Nc5 26.Nc3 Qc6 27.Bf6 gf6 28.Qe1=+) 26.Nd6 (26.Na7!?=) 26...Qc6 (better is 26...Qb4!? 27.Qa6 Qd2=+) 27.Qa6+= ½–½. Gross,Wilhelm – Merten,Rainer, xxiv/05, 1993.

5.cd5 ed5

6.a3 Bd6 7.Nf3 0–0 8.Be2 c6 9.0–0 Nbd7 10.Nc3 Qc7 11.d3 Ne5 12.h3 (12.Nd4 Bd7=) 12...Nf3+= 13.Bf3 Rfe8 14.Re1 Bg6 15.Ne2 Be5 16.Be5 Qe5 17.Nf4 Rad8 18.Qb3 Bf5 19.Ne2 a6 20.Ng3 (20.Nd4 Be6=) 20...Bg6 21.Rad1 Qc7 22.a4 Qb6 (22...d4 23.Ne4 Ne4 24.de4 Be4 25.ed4 Bf3 26.Qf3=) 23.Qa3 (23.a5 Qc7=) 23...Qc7 (23...d4 24.e4+=) 24.b5 ab5 25.ab5 Ra8 26.Qb3 Qd6 (26...Qb6 27.Rb1=) 27.bc6 bc6 28.Ra1 h6 29.Ra8 Ra8 30.Rc1 Rb8 (30...c5 31.Ne2=) 31.Qc3+= Rc8 0–1. zabazaba (1675) – nimzo53 (1675), gameknot.com, 2015.

6.Nc3 Bb4 7.Qa4 Nc6 8.Bb5 Qd6 9.Bc6 bc6 10.Nge2 0–0 11.0–0 (11.a3 Bc5–/+) 11...c5 (11...Rfb8 12.Rfc1–/+) 12.Nb5 (12.a3 Bc3 13.Bc3 Ne4–/+) 12...Qb6 (better 12...Qd7 13.Bf6 Bd3–/+) 13.d4?? (better 13.Bf6 Bd7 14.Qd1 Bb5 15.Bc3–/+) 13...Bd7–+ 14.dc5 Bc5 (14...Bb5?! 15.Qb4 Qa6 16.Bf6 Be2 17.Be5 Bf1 18.Rf1–/+; 14...Qb5 15.Qb3 Ng4 16.Qd5 Bc5 17.Nd4 Qb2 18.Rab1–+) 15.Nec3 (15.Bf6 Bb5 (15...Qf6?! 16.Rac1–+; 15...gf6?! 16.Nec3–+; 15...Qb5?! 16.Qf4 gf6 17.Qc7–+) 16.Qc2 Qf6 17.Qc5 Be2–+) 15...a6 16.Nd5 (16.Qd1 ab5 17.Nd5 Nd5 18.Qd5 Be6–+) 16...Nd5 (16...Qb5?! 17.Qb5 Bb5 18.Bf6 Bf1 19.Kf1 gf6 20.Nf6 Kg7 21.Nd7–+; 16...Bb5?! 17.Nb6 Ba4 18.Na4=; 16...ab5?! 17.Nb6 ba4 18.Na8 Ra8 19.Bf6 gf6 20.Rfd1–+) 17.Qb3 Bb5 (worse 17...Qb5 18.Qd5 Ba3 19.Qb5 ab5 20.Ba3 Ra3 21.Rac1–+; worse 17...ab5 18.Qd5 Be6 19.Qf3–+) 18.Qd5 Bf1 19.Qe5 (19.Rf1 Be3 20.Bg7 Bf2 21.Rf2 Kg7 22.Qg5 Kh8–+) 19...f6 20.Qd5 Kh8 21.Rf1 Rad8 22.Qh5 (22.Qc4 Be3 23.fe3 Qb2 24.Qc7 Qa2–+) 22...Be3 23.fe3 Qb2 24.h3 (24.a4 Qa3–+) 24...Qa2 25.Rf4 (25.Qc5 Qe6–+) 25...Rfe8 26.Rh4 (26.Qc5–+) 26...Qb1 27.Kh2 Re3 28.Qh7 0–1. Agiant – Rigoni, lichess.org, 2018.

6.Nc3 Bd6 7.Nf3 (7.Nb5 a5 (< 7...Bb4 8.Bf6 gf6 9.Qa4+/–) 8.ba5 Nc6=) 7...0–0=+ 8.d4 (8.Nb5 Be7=+) 8...Nbd7 (8...Bb4 9.Qb3 a5 10.a3 Bc3 11.Bc3–/+) 9.Bd3 (9.a3!?=+) 9...Bd3–/+ 10.Qd3 Bb4 11.0–0 (11.Qb5 Bc3 12.Bc3 Ne4–/+) 11...c6 12.a3 (12.Rfb1 Qe7–/+) 12...Bc3 (12...Bd6 13.a4–/+) 13.Qc3 (13.Bc3 Ne4–/+) 13...Ne4 14.Qd3 Nb6 15.Nd2 Nd2–+ 16.Qd2 Nc4 17.Qc3 Re8 18.Rfe1 f5 19.Bc1 Qa5 20.Qa5–/+ Na5 21.Bd2 Nc4 22.Bb4 Re6 23.Re2 Rae8 24.Rae1 f4 25.Kf1 fe3 (26.fe3 b6–+) 0–1. gtate (1920) – waldokitty (1900), net–chess.com, 2005.

6.Qf3 Be4 7.Bf6 gf6 8.Qe2 Nd7 9.a3 a5 =.

6.h3 Bb4–/+ 7.Qf3 (7.g4 Be4 8.f3 Bb1 9.Rb1 Bf8=) 7...Be4 8.Qe2 (8.Bf6 Qd6 9.Qf4 Qf4 10.ef4 gf6–/+) 8...Nc6 9.f3 (9.a3 Ba5–/+) 9...Bg6 10.Nc3 (10.Qb5 Rb8–+) 10...0–0 11.Qd1 (11.Nb5–+) 11...d4 12.ed4 Nd4 13.Nce2 (13.Rc1 Nh5 14.Qa4 Re8 15.Kd1–+) 13...Nc2 14.Kf2 Bc5 (better 14...Bd2!? 15.Bd4 Be1 16.Qe1 Ne1 17.Re1–+) 15.d4 Na1 (15...Bb4 16.Nc3 Nd5 17.Nd5 Qd5 18.Ne2–+) 16.Qa1 Bd6 17.Nc3 (17.g3 Nd5–+) 17...c6 (17...Bg3 18.Kg3 Nh5 19.Kf2 Qd4 20.Ke1 Qh4 21.g3 Qg3 22.Ke2 Rfe8 23.Ne4 Be4 24.Kd2 Qf2 25.Ne2 Rad8 26.Bd4 Bf3 27.Kc3 Re3 28.Kb4–+) 18.Bc4 (18.Nge2 Re8–+) 18...Nh5 (18...Bg3 19.Kg3 Nh5 20.Kf2 Qd4 21.Ke1 Qh4 22.g3 Rfe8 23.Ne4 Ng3 24.Kd2 Rad8 25.Kc3 Nh1 26.Kb3 Be4 27.fe4 Re4 28.Qf1 Rc4 29.Qc4 Qg3 30.Bc3 Qg1 31.Qe2–+) 19.Nge2 Qh4 20.Kg1 Ng3 21.Ng3 Qg3 (better 21...Qd4 22.Kh2 Qc4–+) 22.Ne4 (22.Ne2 Qh4 23.Qf1–+) 22...Be4 23.fe4 (23.Qf1 Bd5 24.Bd5 cd5 25.Bc1–+) 23...Qe3 24.Kf1 Bg3 25.Qe1 (25.d5 Qf2) 25…Qe1 0–1. alt20 – Shirayukihime (1820), lichess.org, 2016.

5.cd5 Nd5

6.a3 a5 7.b5 Nf6 8.d3 Nbd7 9.e4 Bg6 =.

6.a3 Nf6 7.Nf3 a5 8.b5 Bd6 9.Be2 0–0 =.

6.b5 Bb4 7.Bg7+= Rg8 8.Bb2 Nd7 9.Nc3 Bc3 (9...Ne5 10.Nd5 Qd5 11.Be5 Qe5 12.Nf3=) 10.Bc3 (10.dc3 Be4 11.Nf3 Qe7+=) 10...Nc3 11.dc3 Nb6 (11...Qf6 12.Qd4+=) 12.Qd8 (12.Ne2 Qf6+=) 12...Rd8 13.Be2 Ke7 (13...Nd5 14.Bf3 Bd3 15.a4+=) 14.Nf3 (14.Bf3 Bd3 15.a4 Nd5+=) 14...Bg6 (14...Rg2 15.Nh4 Rg5 16.f4=) 15.0–0 (15.c4 Be4+=) 15...f6 (15...Bd3 16.Bd3 Rd3 17.c4+=) 16.Nh4 (16.Rfd1 e5+=) 16...Rd2 (better 16...Bd3 17.Bd3 Rd3=) 17.Bc4?? (better 17.Bf3+–) 17...Nc4–+ 18.Rad1 (18.Rfd1 Rgd8 19.Rd2 Rd2–+) 18...Rgd8 19.Rd2 Rd2 20.Nf3 (20.a4 Rc2–+) 20...Ra2 21.Nd4 (21.Rc1 Nd6–+) 21...Bd3 (better 21...e5 22.Nb3 Rb2–+) 22.Rb1 (22.Re1–+) 22...Re2 (better 22...Bb1 23.h3 e5–+) 23.g3 1–0. Agiant – dima9753, lichess.org, 2019.

6.Nf3 Nb4–/+ 7.Nd4 Bd6 (better 7...Nd3 8.Bd3 Bd3–/+) 8.Nf5+= ef5 9.Bg7 Rg8 10.Bc3 Nd5 (10...Nd7 11.Na3+=) 11.Qf3 Nc3 12.Nc3 Qf6?? (better 12...c6+–) 13.Qb7+– c6 1–0. GuestLGCP – GuestHTVS, freechess.org, 2017.

6.a3 Nd7

7.d3 Bg6 8.e4 N5f6 9.Nf3 a5 10.Be2 (10.b5 Bh5=) 10...Be7 (10...ab4 11.0–0–/+) 11.0–0 (11.b5 c6=) 11...0–0 (11...ab4 12.ab4 Ra1 13.Ba1 Bb4 14.Qa4–/+) 12.Nbd2 (12.b5 Rc8=) 12...h6 (12...ab4 13.ab4 Ra1 14.Qa1 Bb4 15.Qb1–/+) 13.Nc4 (better is 13.b5!?+=) 13...ab4=+ 14.ab4 Bb4 15.Ra8 Qa8 16.Qb3 Bd6?? (better is 16...c5 17.Nd4 Qb8= (< 17...cd4 18.Ra1 Qe8 19.Qb4=)) 17.Ra1 (17.Nd6?! cd6 18.Ra1 Qb8=) 17...Qb8 (17...Nc5 18.Qc2 Qd8 19.e5+–) 18.e5 (18.Nd6?! cd6 19.Bd4 Bh5=) 18...Nc5 19.Qc2 Nfe4 (19...Nd5 20.ed6 (< 20.Nd6 cd6 21.Qd1 Rc8=+) 20...cd6 21.Ra3+–) 20.de4 (20.ed6!? Nd6 21.Qc3 f6+–) 20...Be4 21.Qc3 Be7 22.Nfd2 Bc6 23.f3 (23.Na5 Bd5+–) 23...Rd8 24.Ne4 (better is 24.Ba3!?+/–) 24...Ne4+= 25.fe4 Bc5 (25...b5 26.Nd2 Qb6 27.Kf1=) 26.Kf1 Be4 27.Bf3 (27.Nd2 Bd4 28.Qa3 Bc5 29.Qc5 Rd2+=) 27...Bd4 28.Qb3 Bb2 (28...Bd3 29.Be2 Be2 30.Ke2=) 29.Nb2+= Bc6 (29...Bd5!? 30.Bd5 ed5+=) 30.Bc6+/– bc6 31.Qb8 Rb8 32.Nd3 Rb3 33.Ra8 Kh7 34.Ke2 (34…Kg6 35.Ra7+/–) 1–0. var – tooholy, Live Game Caissa's Web, 2004.

7.f3 Bg6 8.e4 N5f6 9.d4 Be7 =.

7.Nf3 N7f6 (7...N5f6 8.Nc3=) 8.d3 Bg6 9.Be2 Be7 10.Ne5 Qd6 (10...0–0 11.0–0=) 11.Nd2 (11.Ng6 hg6 12.e4 Nf4+=) 11...Nb6 (11...0–0 12.h4 h6 13.g4+=) 12.Ndc4 (12.e4 Qd8+=) 12...Nc4+= 13.Nc4 (13.Qa4 c6 14.dc4 Qc7+=) 13...Qd5 14.Ne5 Bd6 (better 14...c6!?+=) 15.e4+– (15.Ng6?! hg6 16.Qa4 b5+=) 15...Qb5 (15...Be5 16.ed5 Bb2 17.de6 Bc3 18.Kf1 Ba1 19.ef7 Bf7 20.Qa1+–) 16.d4 Qb6 (16...Bb4!? 17.Kf1 Qb6 18.Ng6 hg6 19.Qa4 c6 20.Qb4 Qb4 21.ab4 Ne4+–) 17.Qa4 c6 18.Nc4 Bb4 (18...Qd8 19.Nd6 Qd6 20.e5+–) 19.ab4 Qc7 20.e5 b5 21.Qa5 Qa5 (21...Nd5 22.Nd6 Ke7 23.Qc7 Nc7 24.h4+–) 22.Na5 (22.Ra5?! bc4 23.ef6 gf6+–; 22.ba5?! Nd5 23.Nd6 Kd7+–) 22...Nd5 23.Nc6 a6 24.Bb5! 1–0. Kapas,Robert (1945) – Paulics,Peter (1710), BUD tch Lilienthal, 2013.

Play 1.b4 at Chessworld.net!

The home of Email Chess on the web!

Chessworld.net on behalf of Marek have set up a continuous stream of 1.b4 tournaments.

These tournaments should always be available to join. As soon as four players are paired, another one will automatically be set up.

    Available lines:
  • 1.b4 (4 players, 1 day/move)
  • 1.b4 (4 players, 10 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 (4 players, 3 days/move)
  • 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)

Click on the logo below, visit Chessworld.net, register and play 1.b4 against the whole world!

The home of Email Chess on the web!

The home of Email Chess on the web!