Onischuk, Al (2674) - Nikolic, Pr (2657) [D20]
World Cup, Khanty-Mansiysk (2.1) 2007
1. d4 d5 2. c4 dxc4
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3. e3
QGA. You can read about this opening in my work "Queen's Gambit Accepted" (ChessBase, CD-ROM) by Boris Schipkov.
3...e5 4. Bxc4 exd4 5. exd4 Nf6
The alternative is 5...Bd6.
6. Nf3
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6...Bb4+
Another continuation is 6...Be7.
7. Nc3 O-O 8. O-O Nc6 9. h3 h6
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10. Re1!
A good novelty. White played 11. Qd3 in Kachiani-Gersinska, K - Kantorik, M, Bayern-ch Bank Hofmann 2nd, Bad Wiessee 1998.
10...Na5 11. Bd3 Be6 12. Bf4 Nd5 13. Bd2 Nc6 14. a3 Be7 15. Rc1 Bf6
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16. Rxe6!
An excellent exchange sacrifice. Now White can attack on the kingside with the manoeuvre Qe2-Qe4, seizing the b1-h7 diagonal.
16...fxe6 17. Qe2 Qd7 18. Qe4 g5
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19. h4
Better is 19. Na4! Nd8 20. h4! Qf7 (20...Qg7 21. Nc5) 21. hxg5 hxg5 22. Re1! Qh5 (22...c6 23. Qg4 b6 24. Nc3 Qg7 25. Ne4) 23. Nxg5 Bxg5 24. Bxg5 Nf6 25. Qf4 Qg4 26. Qxg4 Nxg4 27. Nc5 with a clear edge to White.
19...Rae8 20. hxg5 hxg5 21. Nxg5
Here 21. b4!? Nxc3 22. Bxc3 Qg7 23. Qg4, 21. Ne2!? Qg7 22. Bxg5 or 21. Re1!? is worthy of attention, with compensation.
21...Bxd4 22. Nf3 Nf6 23. Qg6+ Kh8?!
Correct is 23...Qg7!? 24. Nxd4 Nxd4 25. Bh6 Qxg6 26. Bxg6 Re7 27. Bxf8 Kxf8, and Black has real chances on a draw.
24. Ne2 Bb6?!
After 24...Bxb2 25. Rb1 Bxa3 26. Rxb7 Qg7 27. Qxg7+ Kxg7 28. Rxc7+ Ne7 29. Ned4 Nfd5 30. Rxa7 Ra8 31. Rd7 Rfc8 32. g4 Nf6 33. Nxe6+ Kg8 34. Rd4 the first player has a small advantage.
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25. Bh6?!
White could win quickly with the second exchange sacrifice after 25. Rxc6!! bxc6 (25...Qxc6 26. Ne5 Qc5 27. Qh6+ Kg8 28. Qg5+ Kh8 29. Be3 Qd6 30. Nf4 Bxe3 31. fxe3 Nh7 32. Bxh7 Kxh7 33. Qg6+ Kh8 34. Qh6+ Kg8 35. Nfg6) 26. Bc3 e5 27. Nxe5 Qg7 28. Qf5 Kg8 29. Nxc6.
25...Rf7 26. Ng5?!
More precise is 26. Bg5 Nh7 27. Qh5 Rg8 28. Bg6 Rxg6 29. Qxg6 e5 30. Ng3 Rg7 31. Qh5 with slight edge.
26...Ne5! 27. Nxf7+ Qxf7 28. Qxf7 Nxf7 29. Bf4 Ng4
29...e5 looks better.
30. Bg3
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30...Nfe5?!
30...Nd6 is more precise.
31. Be4 Rf8 32. Rf1 c6 33. Nf4 Rf6 34. Nh3 Nc4 35. Rd1 Rf7 36. b3 Nxa3 37. Bf3 Rg7 38. Re1 Nb5 39. Rxe6
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39...Nc7?
The last mistake. 39...Kh7 is possible.
40. Bxc7 Bxc7 41. Re8+
White checkmates with 41. Re8+ Kh7 42. Be4+ Kh6 43. Rh8+ Rh7 44. Rxh7.
Black resigned. 1-0
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Onischuk, Alexander (2674) - Nikolic, Predrag (2657) [D20]
World Cup/Khanty-Mansiysk (2.1) 2007
1. d4 d5 2. c4 dxc4 3. e3 e5 4. Bxc4 exd4 5. exd4 Nf6 6. Nf3 Bb4+ 7. Nc3 O-O 8. O-O Nc6 9. h3 h6 10. Re1 Na5 11. Bd3 Be6 12. Bf4 Nd5 13. Bd2 Nc6 14. a3 Be7 15. Rc1 Bf6 16. Rxe6 fxe6 17. Qe2 Qd7 18. Qe4 g5 19. h4 Rae8 20. hxg5 hxg5 21. Nxg5 Bxd4 22. Nf3 Nf6 23. Qg6+ Kh8 24. Ne2 Bb6 25. Bh6 Rf7 26. Ng5 Ne5 27. Nxf7+ Qxf7 28. Qxf7 Nxf7 29. Bf4 Ng4 30. Bg3 Nfe5 31. Be4 Rf8 32. Rf1 c6 33. Nf4 Rf6 34. Nh3 Nc4 35. Rd1 Rf7 36. b3 Nxa3 37. Bf3 Rg7 38. Re1 Nb5 39. Rxe6 Nc7 40. Bxc7 Bxc7 41. Re8+ 1-0
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© 2000-2007 Boris Schipkov