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Korchnoi, V. (2640) - Gretarsson, H. (2515) [D12]
Hrokurinn, Reykjavik (2) 2003

Notes by Boris Schipkov

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4
Also possible are 6...Bg6 and 6...Bg4.
6. Bg6 7. Nxg6 hxg6 8. Qd3 Nbd7 9. g3 dxc4 10. Qxc4 e5 11. Bg2 Nb6 12. Qe2 exd4 13. exd4+ Be7 14. O-O O-O 15. Bf4 Re8 16. Be5 Nfd5, Korchnoi, V - Beliavsky, A, Mitropa Cup, Leipzig 2002.
8. g3 Nbd7 9. Bg2 dxc4 10. Qe2 Be7 11. O-O O-O 12. Rd1 Qc7 13. Qxc4 e5 14. b4 Nb6 15. Qb3 exd4 16. exd4 Qd7 17. b5 Nbd5 18. Nxd5 Nxd5 19. bxc6 bxc6 20. Bd2, Kramnik, V - Gelfand, B, Amber Rapid 2003.
8. Bd2 Nbd7 9. Qb3 Qb6 10. Qc2 Be7 11. Be2 dxc4 12. Bxc4 Qc7 13. h3 Nb6 14. Bb3 c5 15. Na4 Qc6 16. O-O Nxa4 17. Bxa4 b5 18. Bb3 c4 19. a4, Dreev, A - Rustemov, A, Dos Hermanas 2003.
7. f3 Bg6 8. Qb3 Qc7
Deserving attention is 8...Qb6.
8...Qb6 9. Nxg6 hxg6 10. Bd2 Nbd7 11. O-O-O Be7 12. Kb1 O-O 13. g4 Qxb3 14. axb3 g5 15. h4 gxh4 16. g5 Nh7 17. f4 f5 18. gxf6 Nhxf6 19. Rxh4 Kf7, Lautier, J - Huebner, R, Bundesliga 2003.
11...Qxb3 12. axb3 Bd6 13. h3 a6 14. Bd3 O-O-O 15. Bc2 Bc7 16. e4 dxe4 17. fxe4 e5 18. d5 c5 19. Ne2 Ne8 20. g4 Nd6 21. Ng3 Rdf8 22. Bd3 a5 23. h4 Nf6 24. g5 Nh5 25. Ne2 f5 26. gxf6 1/2, Lautier, J - Cramling, P, Bundesliga 2003.
9. Bd2 Nbd7 10. cxd5 exd5
Or 10...Nxd5 11. Nxg6 hxg6 12. O-O-O Be7 13. Kb1 a5 14. g3 N7b6 with slightly better chances to White in Kacheishvili, G - Stripunsky, A, North American op, Las Vegas 2002.
11. O-O-O
White has a small edge and a nice plan e3-e4.









   
11...b5?!
A risky novelty. In the game Tregubov, P - Volkov, S, Aeroflot op, Moscow 2002 White obtained an advantage after 11...O-O-O?! 12. e4 dxe4 13. Nxg6 hxg6 14. fxe4 Nb6 15. Bg5 Re8 16. Bd3 Ng4 17. Rhf1 f6 18. h3 Nf2 19. Rxf2 Qg3 20. Rc2 Qxg5+ 21. Kb1. Maybe better is 11...Qb6.
12. Nxg6 hxg6 13. e4! Nb6
13... b4 is met by 14. Na4 dxe4 15. fxe4 c5 16. Qc2 with a powerful initiative.
14. Kb1 a6 15. g3 Be7 16. Bf4 Qb7 17. Bd3
White has a clear advantage because he can attack in the center and on the left or right wing.
17...O-O-O
If 17...Nc4 then 18. h4 Nh5 19. exd5 cxd5 20. Bg5.
18. Rc1 Nc4
After 18... dxe4 19. Nxe4 Rxd4 20. Qxf7 Rxd3 21. Qe6+ Kd8 22. Rxc6 White has a good attack.
19. exd5 cxd5








   
20. Nxd5!!
A brilliant blow!
20...Qxd5 21. Rxc4+!
Throwing another piece into the fire and opening the Black's king.
21...bxc4 22. Bxc4 Qb7
Or 22... Qf5+ 23. Ka1 Rxd4 24. Rc1.
23. Be6+!
Winning at once 23. Be6+ Rd7 (23... fxe6 24. Rc1+ Kd7 25. Qxb7+) 24. Rc1+ Kd8 25. Qxb7 Rxb7 26. Rc8 mate!
Black resigned. 1-0










Move
   

Korchnoi, Viktor (2642) - Gretarsson, Helgi Ass (2516) [D12]
Reykjavik Hrokurinn/Reykjavik (2) 2003

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 Nbd7 10. cxd5 exd5 11. O-O-O b5 12. Nxg6 hxg6 13. e4 Nb6 14. Kb1 a6 15. g3 Be7 16. Bf4 Qb7 17. Bd3 O-O-O 18. Rc1 Nc4 19. exd5 cxd5 20. Nxd5 Qxd5 21. Rxc4+ bxc4 22. Bxc4 Qb7 23. Be6+ 1-0


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