Dvoirys, Semen - Tregubov, Pavel [B33], 56th Russian Chess Championship, Krasnoyarsk (5) 2003

Chess Siberia

Dvoirys, Semen - Tregubov, Pavel [B33]
56th Russian Chess Championship, Krasnoyarsk (5) 2003
Notes by Boris Schipkov

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5
Soon I will publish my new CD "Novosibirsk Sicilian B33". There are 14 chapters (Introduction, History, 2 chapters with Strategic Ideas, 7 chapters with all main variations of the Lasker-Pelikan System and Novosibirsk Sicilian B33, Conclusion, Bibliography, Novosibirsk City with 21 photos and 4 small videos), 275 games with my notes in the CD-ROM.
6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. g3

11...fxe4
Interesting is 11...Bg7.
12. Bg2 Be6 13. Bxe4 Bg7 14. Qh5
After 14. Nf6+ Bxf6 15. Bxc6+ Ke7 16. Bxa8 Qxa8 Black secures compensation for the exchange due to his two strong bishops.
14...Rc8 15. O-O! Ne7 16. Rad1

16...Nxd5
Interesting is 16...Rc5.
17. Bxd5 Qd7 18. c3 O-O 19. Rd2 Rc5 20. Qd1 Rd8 21. Nc2 Bh6 22. Ne3! Bxe3
If 22...Bxd5 then 23. Nxd5 Qe6 24. f4 f5 25. Re1. Or 22...Kg7 23. f4 with a small edge to White.
23. Bxe6!
Zwischenzug.
23...Qxe6 24. fxe3
White gets some pressure on the Black's position.
24...f6?!
Slightly better is 24...e4 25. Rdf2 Rd5 26. Qe2 Rg5 and White has a small but lasting advantage.
25. Qf3!

25...a5
Now White obtains an excellent game.
26. Qxf6 Qxf6 27. Rxf6
White has an extra pawn and a big advantage in the ending.
27...b4 28. cxb4 axb4 29. b3 Ra5 30. Kg2 Kg7 31. Rf5 Ra6 32. h4 h6 33. Kf3
A winning march.
33...Rc8 34. h5 Rc1 35. Rf2 Ra7 36. Kg4 Re1 37. Rf6 d5 38. Rg6+ Kh7 39. Rff6 Rxe3 40. Rxh6+ Kg8 41. Rhg6+ Kh7 42. Rh6+ Kg8 43. Rfg6+ Rg7 44. Rxg7+ Kxg7 45. Rd6 d4 46. Kf5
Black resigned. 1-0

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