Teimour Rajabov chose to play Sveshnikov variation [It was actually the Kalashnikov - CV] against Alexander Morozevich and Black was OK until the moment he had to find the very accurate move 21...Qb3!. The difference with the move in the game was that Black had 22…Qd5 after 22.Rc8 and after 23.Qa3 there was an important resource 23...Ra2. After 21…Qa4 White won an exchange and was increasing his advantage. Morozevich could have won easier but Black never got a real chance to fight for a draw. On the 43rd move Black could have tried a stalemate idea by playing 43…Kh6 44. Rg7?? Qg2+!.
Morozevich, Alexander - Radjabov, Teimour 1-0
Zug SUI, 2013.04.29
SICILIAN DEFENCE
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 a6 7. Na3 Be7 8. Be3 Nf6 9. Nc4 b5 10. Nb6 Rb8 11. Nxc8 Qxc8 12. Be2
12. Bd3 Nb4 13. O-O Nxd3 14. Qxd3 h6 15. a3 O-O 16. f3 Qc4 17. Rfd1 Rfc8 Volokitin,A (2695)-Kempinski, R (2603)/Warsaw 2011
12... O-O 13. O-O b4 14. Nd5 Nxe4 15. a3 Bd8 16. Qd3 Nf6 17. Nxb4 Nxb4
17... h5 18. Nxc6 Qxc6 19. b4 d5 20. Bc5 Re8 21. c4 d4 22. Rfd1 Bc7 Sulskis,S (2582)-Radjabov,T (2656)/Tallinn 2004
18. axb4 Rxb4 19. Qxd6 Rxb2 20. Bxa6 Qxc2 21. Rac1 Qa4?!
21... Qb3! 22. Rc8 Qd5 = 23. Qa3?! Ra2
22. Rc8 Nd7
22... Qd7 23. Qa3
23. Rfc1 Rb8 24. R8c6 Qg4 25. Bc8 Rxc8 26. Rxc8 Bf6 27. R8c7?!
27. R1c7! would force resignation immediately.
27... Rd8 28. Rd1 Be7 29. Rxd7 Bxd6 30. Rxd8+ Bf8 31. h3 Qa4 32. Rc1 f5 33. Rcc8 Kf7 34. Rxf8+ Kg6 35. g3 h5 36. h4 Qg4 37. Bg5 f4 38. Bxf4 exf4 39. Rc6+ Kh7 40. Rxf4 Qd1+ 41. Kh2 Qd5 42. Rc7 Kg6 43. Rff7 Qxf7
43... Kh6!? 44. Rxg7?? Qg2+
44. Rxf7 Kxf7 45. g4 1-0
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