Dvoirys, Semen (2612) - Jakovenko, Dmitry (2582) [B33], 57th Russian Championship, Tomsk (5) 2004

Chess Siberia

Dvoirys, Semen (2612) - Jakovenko, Dmitry (2582) [B33]
57th Russian Championship, Tomsk (5) 2004
Notes by Boris Schipkov

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5

6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. c3 Bg7 12. exf5 Bxf5 13. Nc2 Be6

14. Be2
Also possible are 14. g3 and 14. Nce3.
14...O-O 15. Qd2 Rb8!?
More interesting than 15...Bxd5 16. Qxd5 Ne7 17. Qd2 d5 18. O-O, Dvoirys, S - Yagupov, I, 57th Russian Championship, Tomsk (3) 2004. Here Black could play 18...Qb6!? 19. a4 bxa4 20. Rxa4 a5 21. Ne3 Rfd8 with more or less equal game.
16. Rd1 Qd7 17. O-O f5 18. f4 Kh8 19. Kh1 a5

20. a3
The chances are even.
20...Qb7 21. Nce3 e4 22. g4 fxg4 23. Bxg4 Bxg4 24. Nxg4 Ne7!?
Unclear is 24...Nd4 25. Nde3 Nf5.
25. Nge3 Nxd5 26. Qxd5
If 26. Nxd5 then 26...Rbe8 with initiative.

26...b4!
An excellent pawn sacrifice.
27. Qxa5?!
More calm is 27. cxb4 axb4 28. Qxb7 Rxb7 29. Rxd6 Bxb2 30. axb4 Rxb4.
27...bxc3 28. bxc3 Qc8! 29. f5 Be5 30. Rf2
After 30. Rd5!? Re8 31. c4 Rb3 Black has some initiative.
30...Rb3! 31. Rc1?!
Better is 31. Qd5!? Rxc3 32. Qxe4 Qc5 33. Re2 with only a small edge to Black.
31...Bd4! 32. Re2 Bc5 33. Qa4 Qb7

34. Qc4
Black has occupied the open file and obtained a very strong compensation for a pawn.
34...Rb1 35. Rf1?
Better is 35. Rxb1 Qxb1+ 36. Kg2 Qb7 37. Kh3 Qe7 38. Ng4 h5 39. Nf2 e3 40. Qf4 Qh7 41. Ne4 Rxf5 42. Qh4 Qg8 and Black has an advantage.
35...Rg8 36. Rg2 Rxg2

37. Rxb1
Or 37. Nxg2 d5 38. Qe2 Qb2 39. Qa6 Rxf1+ 40. Qxf1 Qxc3 and Black wins easily thanks to his passed pawns in the centre.
37...Qxb1+ 38. Kxg2 Bxe3 39. Qc8+ Kg7 40. Qd7+ Kh6
White resigned. 0-1

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