Mamedyarov, Shakhriyar - Nakamura, Hikaru

Mamedyarov - Nakamura 0-1In this Slav Defence Mamedyarov got an unpleasant position out of the opening. White could not prove he has enough compensation for the pawn and after 21...f5 his position became really bad. It was still not necessary to resign after 22…Rxc4, even though the position was still much better for Black but the Azeri player miscalculated the variation and thought he would end up in the position with a rook against 3 pieces. The game could have continued after 23.bxc4 Bxc4 24.Nb4! Bxe2 25.Nxd5 exd5 26.Bxe2 Nd2 27.Rc7. According to Nakamura his position was still winning. However, it looks like White keeps some drawing chances in the endgame.

Mamedyarov, Shakhriyar - Nakamura, Hikaru 0-1
Zug SUI, 2013.04.29

SLAV DEFENCE
                                                                                                               
1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. e3 b5 5. a4 b4 6. Nce2 Nf6
6... Qd5 7. Ng3 Nf6 8. Be2 e5 9. Nf3 Nbd7 10. O-O Bd6 11. Nd2 c3 12. bxc3 bxc3 13. e4 Qe6 14. Nf5 O-O 15. Bc4 Nd5 16. Nf3 N7b6 17. Bb3 Ba6 18. Re1 Bc7 19. dxe5 Mamedyarov,S (2733)-Brunello,S (2575)/Porto Carras 2011
7. Nf3 Ba6 8. Ng3 c5 9. Bd2 e6 10. Rc1 Qd5 11. Ne5 cxd4 12. Nxc4 Nbd7 13. Be2 Rc8 14. Bf3 Qc5 15. b3 Be7 16. Ne2 d3 17. Nf4 O-O 18. Nxd3 Qf5 19. e4 Nxe4 20. g4 Qd5 21. Qe2 f5 22. O-O Rxc4
22... Rxc4 23. bxc4 Bxc4 24. Nxb4! Bxe2 (24... Bxb4!? 25. Rxc4 Bxd2 26. Bxe4 fxe4 27. Rxe4 Nc5 28. Re5 Qd3 29. Qxd3 Nxd3 30. Rxe6 Bb4 ) 25. Nxd5 exd5 26. Bxe2 Nxd2 27. Rc7 Rd8 28. Bb5 Bd6 29. Rxd7 Bxh2+ 30. Kxh2 (30. Kg2 Rxd7 31. Rd1 Rd8 32. Rxd2 Bf4 33. Rd4 Be5 ) 30... Nxf1+ 31. Kg2 Rxd7 32. Bxd7 Nd2 33. Bxf5 Kf7 0-1