Ivanchuk, V. (2787) - Nisipeanu, LD. (2668) [E14], World Cup, Khanty-Mansiysk (3.5) 2007

Chess Siberia

Ivanchuk, V. (2787) - Nisipeanu, LD. (2668) [E14]
World Cup, Khanty-Mansiysk (3.5) 2007
Notes by Boris Schipkov

1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7

7. e3
A popular variation.
7...O-O 8. Be2 d6 9. O-O Nbd7 10. b4 Ne4 11. Qc2 f5 12. Bb2 Rf6
This position can also arise from the Bogo-Indian Defence E11.
13. d5 Rg6 14. Rad1

14...e5!
A strong novelty. Worse is 14...Qe7 15. Nd4 Nf8 16. Bd3 exd5 17. Nxf5 Qg5 18. f3 Qxf5 19. fxe4 Qh5 20. exd5 Rh6 21. h3, Gonda, L - Bindrich, F, EU-chT U18, Balatonlelle 2006.
15. Bd3 c6!
Black attacks the centre and opens the way for his bishop.
16. Bxe4
After 16. Ne1 Qh4 17. f3 Rh6 18. fxe4 Qxh2+ 19. Kf2 Nf6 20. exf5 Qh4+ 21. Ke2 e4 22. dxc6 Bxc6 23. Kd2 exd3 24. Qxd3 Nh5 25. Nf3 Qg4 26. Nd4 Bb7 27. Qe2 Qg5 Black has good counterplay.
16...fxe4 17. Qxe4 cxd5 18. cxd5 Nf6

19. Qc4?!
Correct is 19. Qb1 Nxd5 20. e4 Nf4 (20...Qd7 21. exd5 Rxg2+ 22. Kxg2 Qg4+ 23. Kh1 Qxf3+) 21. Bxe5 Qf8 22. Bxf4 Qxf4 23. Nd2 (23. Qb3+ Kh8 24. Nd2 Bxe4 25. Nxe4 Qxe4) 23...Re8 (23...d5) 24. g3 Bxe4 25. Nxe4 Qxe4 26. Qxe4 Rxe4 27. Rd2 Rge6, with equality.
19...Rc8?!
Better is 19...Qd7! 20. Bxe5 (20. Ne1 Rc8) 20...dxe5 21. Nxe5 Bxd5 22. Rxd5 Qxd5 23. Qxd5+ Nxd5 24. Nxg6 hxg6, with a clear advantage to Black.
20. Qb3 Qd7

21. Ne1?
The decisive mistake. White must continue 21. Bxe5! dxe5 22. Nxe5 Rxg2+ 23. Kxg2 Qe6 24. Qb2 Nxd5 25. Kg1 Re8 26. f4 Nxe3 27. Rd7 Nxf1 28. Rxb7 Ne3 29. Qd2 Nd5, with more or less equal play.
21...Ba6 22. f3 Bc4
Winning the f1-rook.
White resigned. 0-1

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