[Event "?"]
[Site "?"]
[Date "2023.??.??"]
[Round "?"]
[White "Classical 6. Bc4"]
[Black "?"]
[Result "*"]
[ECO "B89"]
[Annotator "Boris avrukh"]
[PlyCount "44"]
[EventDate "2019.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 (6. Be2 e5 7. Nf3
h6 {[%csl Rd5,Gg5]} 8. O-O (8. b3 Be7 9. Bb2 O-O 10. O-O {see 8.0-0}) 8... Be7
9. Re1 (9. Be3 Be6 {[%cal Gd6d5]} 10. Qd2 (10. Nd2 O-O 11. Bc4 d5 $1 12. exd5
Nxd5 13. Nxd5 Bxd5 $11) 10... O-O 11. Rfd1 (11. Rad1 a6 {[%cal Gb7b5]} 12. Ne1
(12. a4 Nb4 $15 {[%csl Gb4]}) 12... Rc8 13. f3 (13. a4 Qc7 $15) 13... Nd4 $1
14. Bxd4 exd4 15. Qxd4 d5 {[%cal Ge7c5]} 16. Nd3 dxe4 17. Qxd8 Rfxd8 18. fxe4
b5 $44 {[%cal Gb5b4] 0-1 (35) Nikolin,D-Ivanovic,B (2440) Vrsac 1977}) 11...
Rc8 {[%csl Ge4]} 12. a3 a6 13. Ne1 Na5 {[%csl Gc8][%cal Ga5c4]} (13... Nb8 {
[%cal Gb8d7]}) 14. Nd5 {[%cal Gd5e7,Gd2a5] 1/2 (15)-1/2 (55) Suhm,B-Leserer,H
Germany 1991} Bxd5 $1 $146 15. exd5 Nc4 16. Bxc4 Rxc4 17. b3 Rc8 $15) (9. Bc4
Be6 10. Qe2 (10. Qd3 O-O 11. Bb3 Rc8 (11... Na5 $5) 12. Rd1 Na5 $11) (10. Bb3
O-O 11. Nh4 {[%csl Gf5]} (11. Re1 Na5 $1 {[%cal Ga5b3]}) 11... Nxe4 {[%cal
Ge7h4]} 12. Nxe4 d5 $15 (12... Bxh4 13. Bxe6 fxe6 14. Qxd6 {[%csl Ge5,Ge6]})) (
10. Bxe6 fxe6 11. Qd3 O-O 12. Rd1 Qe8 $15 {[%cal Ge8g6,Gg6h5]}) 10... O-O 11.
Rd1 (11. Be3 Na5) 11... Qc7 $1 12. Nd5 (12. Bxe6 fxe6 13. Nb5 (13. Qc4 {
[%csl Ge6]} Qc8 $11 {[%cal Gc6a5,Ga7a6,Gb7b5]}) 13... Qb8 14. c4 a6 $15 15. Nc3
Qe8 {[%cal Ge8g6]}) 12... Bxd5 13. Bxd5 Nxd5 14. Rxd5 (14. exd5 Nb8 15. c4 f5
$15 {[%cal Gb8d7] 1/2-1/2 (73) Engine (3205) -Engine (3108) CCRL 2013}) 14...
Nb4 15. Rd2 a5 16. a3 Na6 $11) (9. b3 O-O 10. Bb2 Be6 11. Re1 Rc8 12. h3 a6 13.
Bf1 Qa5 14. a3 {see 10. b3}) 9... O-O 10. h3 (10. Bf1 Bg4) (10. b3 Be6 11. Bb2
Rc8 12. h3 (12. Bf1 Bg4 {[%cal Gc6d4]} 13. h3 Bh5 14. g4 Bg6 $11) (12. a3 a6
13. h3 {[%csl Ge5]} Nb8 {[%cal Gb8d7]} 14. Bf1 Qc7 {[%csl Gc2]} 15. Rc1 Nbd7
$13 16. Nd5 Nxd5 17. exd5 Bf5 18. c4 Bf6 $13) 12... Qa5 $1 13. a3 {[%cal Gb3b4]
} a6 14. Bf1 Nb8 15. b4 {[%csl Gc4]} (15. Qd2 Qc5 $1 {[%csl Gc2]} 16. Rac1 b5
$15) 15... Qc7 16. Rc1 {0-1 (49) Kopylov,A (2414) -Shevchenko,K (2652) Chess.
com INT 2022} Qc6 {[%csl Gc3,Gd5]} 17. Nd2 Nbd7 $15 {[%csl Gc4][%cal Gd7b6]}) (
10. Bc4 Na5 11. Bb3 Nxb3 12. axb3 a6 $15 {[%cal Gc8e6]}) 10... a6 11. Bf1 {
[%csl Gg4]} Qc7 12. Nd5 (12. Be3 Na5) (12. b3) 12... Nxd5 13. exd5 (13. Qxd5 $2
Nb4 {[%csl Gc2]}) 13... Nb8 (13... Nd8 {[%cal Gf7f5,Gd8f7]}) 14. c4 {[%cal
Gc4c5]} (14. Bd2 a5 {[%cal Gb8a6]} 15. Re3 Na6 16. Qe1 {[%csl Ga5]} Qxc2 (16...
Nc5 17. Nd4 {[%cal Gd4b5]}) 17. Bxa5 Qg6 18. Rc1 f5 19. Rb3 Bf6 20. Nd2 Nc5 21.
Ra3 e4 {[%csl Gb2]} 22. Nc4 f4 $40 {Fishbein,A (2481)-Avrukh,B (2598) Chicago
2016}) 14... a5 15. b3 (15. Be3 Na6 16. a3 {[%cal Gb2b4]} Bd7 {[%cal Ga5a4]}
17. Rb1 (17. b3 {0-1 (57) Picard,R (2086)-Le Pen,S (1967) Nantes 2015} b6 (
17... f5 18. Rb1 $14) 18. Rb1 Bf5 19. Rb2 Nc5 20. b4 axb4 21. axb4 Nd7 $13)
17... a4 18. b4 axb3 19. Qxb3 Bf5 20. Rb2 Nc5 21. Qb6 Rfc8 22. Bxc5 Qxc5 23.
Qxc5 Rxc5 24. Rxb7 Bd8 $44 {[%cal Gc5a5,Gf5d7,Gf7f5] 1/2-1/2 (58) Odeev,H 
(2472)-Avrukh,B (2630) Linares 2001}) 15... Na6 16. a3 {[%csl Ga8][%cal Gb3b4]}
Bf5 17. Bb2 Bg6 {comfortable for Black.}) 6... e6 7. Be3 (7. Bb3 Be7) (7. O-O
Be7 8. Be3 (8. Kh1 O-O 9. f4 (9. Bb3 {trans to main line}) (9. a3 Nxd4 $1 10.
Qxd4 b6 $5 (10... Bd7 $5 $11) 11. Bg5 Bb7 12. Rad1 Rc8 13. Bb3 Rc5 $11) (9.
Nxc6 bxc6 10. f4 d5 $15) 9... d5 $1 10. exd5 (10. Nxc6 bxc6 11. Bd3 Nd7 12. Be3
Nc5 $11) 10... exd5 11. Bb3 (11. Be2 Re8 $1 12. Bf3 Bb4 {[%csl Ge4]} 13. Qd3
Bxc3 14. Qxc3 Qb6 $1 15. Nxc6 bxc6 16. Bd2 Bf5 $15 {[%csl Ge4] 0-1 (46)
Capellades Subirana,M (2225)-Gonzalez Garcia,J (2508) Sabadell 2016}) 11... Bb4
$5 {[%cal Gf8e8,Gb4c3,Gf6e4] nice for Black}) (8. Bb3 {Trans to the main line})
8... O-O 9. Bb3 (9. f4 $6 d5 10. exd5 exd5 11. Be2 {[%csl Gg4]} (11. Bb3 Ng4
$40 {[%cal Ge7c5,Gd8b6]}) 11... Re8 $15 {[%csl Gc5,Ge3][%cal Ge7b4] 37 games})
9... Bd7 (9... a6 10. f4 Nxd4 11. Bxd4 b5 12. e5 dxe5 13. fxe5 Nd7 14. Ne4 Bb7
15. Nd6 Bxd6 16. exd6 Qg5 17. Qe2 {another line})) (7. f4 d5 $1 8. Bb5 (8. exd5
exd5 9. Bb5 Bd7 10. O-O Be7 $15) 8... Qb6 9. exd5 exd5 10. Na4 Qc7 11. Qe2+ Be7
12. Qe5 Kd8 $1 13. Bxc6 Bd6 $40) (7. a3 Be7 8. Ba2 (8. O-O O-O 9. Be3 (9. Ba2 {
trans}) 9... Bd7 10. f4 (10. Be2 Nxd4 11. Qxd4 Bc6 $1 12. Rfd1 Qc7 $11) 10...
Nxd4 11. Bxd4 e5 $1 12. fxe5 dxe5 13. Bxe5 Ng4 {[%csl Ge5,Gg1]} 14. Bf4 Rc8 15.
Qd3 Be6 16. Nd5 Bc5+ 17. Kh1 Nf2+ 18. Rxf2 Bxf2 19. Rf1 Bh4 20. Bb3 Kh8 21. Rd1
Bg5 $15 {0-1 (48) Heesen,J (1816)-Tavani,A (2258) LSS email 2008}) 8... O-O 9.
O-O {trans} (9. Be3 Bd7 10. O-O {trans}) 9... Bd7 10. Kh1 (10. Be3 Nxd4 $1 11.
Bxd4 (11. Qxd4 b5 $1 $15 {[%cal Gd8c7,Ga7a5,Gf8b8]}) 11... Bc6 12. Qd3 (12. Qe2
e5 13. Be3 Nxe4 14. Nxe4 Bxe4 15. Bxa7 Bxg2 16. Kxg2 Rxa7 $15 {0-1 (41)
Kabisch,T (2314)-Ochsner,B (2462) Illertissen GER 2018}) 12... b5 13. Rad1 Qb8
$1 $11 {[%cal Gb8b7]} 14. Bxf6 $140 $2 Bxf6 15. Qxd6 Qb7 $17) (10. f4 Nxd4 11.
Qxd4 Bc6 12. f5 {1-0 (72) Bogdanovic,R-Puc,S Sarajevo 1960} exf5 13. Rxf5 Ng4
$1 $15 {[%cal Ge7f6]}) 10... Nxd4 $1 11. Qxd4 b5 $5 12. f4 Qc7 13. Be3 a5 $15)
7... Bd7 (7... a6 8. O-O) 8. O-O (8. f4 Be7 9. Qf3 Rc8 {[%csl Gc4]} 10. O-O-O (
10. Bb3 Nxd4 11. Bxd4 b5 12. Bxa7 (12. a4 bxa4 13. Bxa4 O-O 14. O-O a5 $13)
12... b4 (12... Bc6 {[%cal Gb5b4,Gd8a5]}) 13. Ne2 Bc6 14. Ng3 h5 $44 {[%cal
Gh5h4] 1/2-1/2 (35) De Firmian,N (2552)-Reeh,O (2416) Germany 2002}) 10... Nxd4
11. Rxd4 {[%csl Gc4]} Qa5 12. Bb3 Rxc3 (12... O-O {0-1 (81) Sundaram,S-Wang,A
Dreaming King 2020 2020 [HP2018]} 13. Bd2 $14) 13. bxc3 O-O $44 {[%csl Gc1]})
8... Be7 9. Bb3 (9. f4 {[%csl Gc4][%cal Gd6d5]} O-O 10. Qf3 (10. f5 Ne5 11. Bb3
Neg4 12. Bg5 e5 {[%cal Gd8b6]} 13. Bxf6 Nxf6 14. Nde2 d5 $1 15. Bxd5 (15. Nxd5
Nxe4 16. Kh1 Bc6 $15) 15... Ng4 $1 $15 {[%cal Ge7c5,Gd8h4]}) 10... Qc7 $5 11.
Bb3 (11. Bd3 Nxd4 12. Bxd4 e5 13. fxe5 (13. Be3 b5 14. Nxb5 Bxb5 15. Bxb5 Qxc2
$13 {[%csl Gb2,Ge4]}) 13... dxe5 14. Qg3 (14. Be3 Bc5) 14... Bc5 15. Bxc5 Qxc5+
16. Kh1 Qe7 $11) (11. Ndb5 Qb8) 11... Nxd4 12. Bxd4 Bc6 (12... b5 13. e5 dxe5
14. fxe5 $14) 13. f5 (13. Qg3 b5 $1 14. e5 dxe5 15. fxe5 Ne4 16. Nxe4 Bxe4 $15)
13... e5 14. Be3 b5 {[%cal Gb5b4]} 15. Bg5 Nxe4 $1 (15... Rac8 $6 16. Bxf6 Bxf6
17. Rf2 $14) 16. Bxe7 (16. Nxe4 Bxg5 $15) 16... Nf6 (16... Nxc3 17. Qxc3 $18 {
[%cal Gc3c6]}) 17. Bd5 Nxd5 18. Nxd5 Bxd5 19. Qg3 {[%cal Gf5f6]} f6 20. Bxf8
Rxf8 $44) 9... O-O 10. f4 (10. Ndb5 Qb8 {[%csl Gd6]} 11. f4 (11. Bf4 {[%csl
Gb3]} Ne5 (11... e5 {[%csl Gd5]} 12. Bg5)) 11... a6 12. Nd4 b5 13. f5 {[%csl
Ge6]} Nxd4 14. Bxd4 Kh8 $1 (14... b4) 15. a3 a5 $15 {[%cal Gb5b4]}) (10. Qe2
Nxd4 11. Bxd4 Bc6 12. Rad1 {[%csl Gd8]} Qa5 13. f4 e5 14. fxe5 (14. Be3 Nxe4
15. Nxe4 Bxe4 16. fxe5 {1-0 (30) De la Foret,F (1373) -Wood,B (1221) FICGS
email 2018} d5 {[%csl Ge5]}) 14... dxe5 15. Rf5 (15. Be3) 15... Bc5 16. Bf2
Bxf2+ 17. Qxf2 Rad8 $11) 10... Nxd4 11. Bxd4 (11. Qxd4 $6 Ng4 {[%csl Ge3]} 12.
Rad1 (12. Bd2 $6 Bf6 {[%cal Gd8b6]} 13. Qxd6 Be7 14. Qd4 Rc8 $40 {[%cal Ge7c5]}
) 12... b5 $146 13. f5 (13. Bc1 Rc8 {[%cal Gd6d5]}) 13... Bf6 14. Qxd6 $140 Be5
15. Qxd7 Bxh2+ 16. Kh1 Qh4 $19) 11... Bc6 12. Qd3 (12. e5 $6 dxe5 13. fxe5 Nd7
{[%csl Re4,Ge5][%cal Ge7c5]}) ({The right move order} 12. Qe2 b5 13. Nxb5 Bxb5
(13... Bxe4 14. Nxa7 $14) 14. Qxb5 Nxe4 {see main line}) 12... b5 13. Nxb5 (13.
a3 a5 14. Rae1 (14. f5 e5 15. Be3 Qc7 {[%csl Gc2][%cal Gc7b7]} 16. Bg5 b4 17.
Bxf6 bxc3 (17... Bxf6 18. Nd5 Bxd5 19. Bxd5 $14) 18. Bxe7 cxb2 19. Bxf8 bxa1=Q
20. Rxa1 Rxf8 21. h3 Rc8 $11 {1/2 (25)-1/2 (25) Canovas Pardomingo,M (2576)
-Cesetti,C (2545) ICCF email 2009}) 14... b4 15. axb4 axb4 16. Nb1 d5 17. exd5
(17. e5 Ne4 {[%csl Rb3]} 18. Nd2 Bb5 $1 19. Qxb5 Nxd2 20. Rf2 Ne4 $15 {[%csl
Gd4]}) 17... Bxd5 $15) (13. e5 dxe5 14. fxe5 Nd7 15. Ne4 (15. Nxb5 Nc5 {
[%csl Gd4][%cal Gc6b5]}) 15... Bxe4 16. Qxe4 Nc5 $15 {[%csl Ge5]}) 13... Bxb5 {
will have to play this move if White has queen on e2} (13... Bxe4 $1 14. Qe2 a5
$15) 14. Qxb5 Nxe4 15. f5 (15. Rad1 d5 16. Qd3 {[%cal Gc2c4]} Nd6 17. c4 dxc4
18. Bxc4 {1/2-1/2 (62) Michiels,B (2501)-Hirneise,T (2446) Germany 2012} Qc7
19. Bb3 Nf5 $13 {[%csl Rb3][%cal Ge7c5]}) (15. Qd3 d5 16. c4 dxc4 17. Bxc4 Nd6
18. Rac1 Rc8 19. Ba6 Rxc1 20. Rxc1 Nf5 {[%csl Gf2]} 21. Bxa7 Qa5 22. a3 {
1/2-1/2 (22) Ottesen,S (2373)-Borisovs,L (2408) ICCF email 2010} Rd8 $1 23. Qb5
Qd2 24. Rf1 Qc2 $36 {[%cal Gd8d2]}) 15... e5 16. Be3 (16. Qe2 Ng3 $5 17. hxg3
exd4 $15 {[%csl Gg1]} 18. Rad1 Bg5 19. Rxd4 $140 $2 Qb6 20. Qf2 Rfe8 $17 {
[%cal Gg5e3]}) 16... Bg5 17. Bxg5 (17. Qe2 Bxe3+ 18. Qxe3 Nf6 19. Rad1 Qc7 20.
Rd2 a5 21. a4 Rab8 22. h3 h6 23. Rfd1 Rfd8 24. Kh1 Rb4 25. Rd3 Rf4 $17 {
Kravtsiv,M (2549)-Balogh,C (2616)}) 17... Qxg5 18. Qd3 Nf6 (18... Nc5 19. Qxd6
Qe3+ 20. Kh1 Ne4 21. Rf3 Nf2+ 22. Kg1 Nh3+ $11) 19. Rae1 (19. Qxd6 Qe3+ 20. Kh1
Ne4 21. Rf3 Nf2+ (21... Qxf3 {[%csl Gd6]} 22. Qxf8+) 22. Kg1 Nh3+ $11 23. Kf1
$2 Qg1+) 19... Rfd8 20. Bd5 Rab8 $146 (20... Rac8 {1-0 (59) Ghaem Maghami,E 
(2585)-Maximov,D (2506) Pardubice 2010}) 21. b3 a5 22. c4 h5 $15 *