[Event "Leon 23rd"] [Site "Leon"] [Date "2010.06.04"] [Round "1.5"] [White "Gelfand, Boris"] [Black "Vallejo Pons, Francisco"] [Result "1-0"] [WhiteElo "2741"] [BlackElo "2703"] [Variant "Standard"] [TimeControl "-"] [ECO "E43"] [Opening "Nimzo-Indian Defense: St. Petersburg Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 { E43 Nimzo-Indian Defense: St. Petersburg Variation } 5. Bd3 Bb7 6. Ne2?! { (0.22 → -0.68) Inaccuracy. Nf3 was best. } (6. Nf3 Bxc3+ 7. bxc3 d6 8. O-O O-O 9. a4 Nc6 10. Nd2 e5) 6... Bxg2 7. Rg1 Bf3 8. Qc2 Nc6 9. a3 Bd6 10. Rxg7?! { (-0.80 → -1.38) Inaccuracy. h3 was best. } (10. h3 O-O 11. Ng3 Bxg3 12. Rxg3 Bh5 13. Ne2 Bg6 14. e4 Nh5 15. Rg1 f5 16. Bg5 Qe8) 10... Kf8? { (-1.38 → -0.17) Mistake. Bxh2 was best. } (10... Bxh2) 11. Ng1 Bg4 12. Rxg4 Nxg4 13. h3 Nh2 14. Bd2 Qh4 15. O-O-O Qxf2 16. Ne4 Qg2 17. Nxd6?! { (-0.44 → -1.44) Inaccuracy. Kb1 was best. } (17. Kb1 Rd8 18. Ne2 Nf3 19. Bc3 Be7 20. Qc1 e5 21. d5 Rg8 22. dxc6 dxc6 23. Qc2 Qxh3) 17... cxd6 18. Be4 Qf2 19. Qd3?! { (-1.24 → -2.27) Inaccuracy. d5 was best. } (19. d5) 19... Rg8 20. Ne2 Nf3?! { (-2.71 → -2.01) Inaccuracy. Nf1 was best. } (20... Nf1 21. Kb1 Nxd2+ 22. Rxd2 Rc8 23. Ka2 Qh4 24. Rd1 Na5 25. c5 bxc5 26. dxc5 d5 27. Qa6) 21. Bc3 Ng5?! { (-2.01 → -1.17) Inaccuracy. Rc8 was best. } (21... Rc8) 22. Bh1 Rc8?! { (-1.49 → -0.75) Inaccuracy. Qf5 was best. } (22... Qf5 23. Qxf5 exf5 24. Ng3 Ne4 25. Nxe4 fxe4 26. Bxe4 Rg3 27. h4 Re8 28. Bxh7 Na5 29. c5) 23. Nf4 Na5?! { (-0.98 → -0.29) Inaccuracy. Nf3 was best. } (23... Nf3 24. Kb1 Ne7 25. Ka2 Nf5 26. Rf1 Qxe3 27. Rxf3 Qxd3 28. Rxd3 Rxc4 29. Be4 Rg5 30. Rd1) 24. c5 dxc5?? { (-0.30 → 2.88) Blunder. d5 was best. } (24... d5 25. Rf1 Nb3+ 26. Kd1 Qh2 27. cxb6 Nxh3 28. Nxh3 Qxh3 29. bxa7 f5 30. Bf3 Kf7 31. Kc2) 25. dxc5 Nb3+? { (2.60 → 4.78) Mistake. Nc4 was best. } (25... Nc4 26. Qxc4) 26. Kb1 Nxc5 27. Qd6+ Ke8 28. Bf6 Qc2+ 29. Ka1 Nb3+?? { (4.05 → Mate in 5) Checkmate is now unavoidable. Qxd1+ was best. } (29... Qxd1+ 30. Qxd1 Nge4 31. Bxe4 Nxe4 32. Bh4 h6 33. Nxe6 dxe6 34. Qa4+ Kf8 35. Qxe4 Rg6 36. Qb7) 30. Ka2 Qc5 31. Qxd7+ Kf8 32. Qd8+ { Black resigns. } 1-0