[Event "St Petersburg op"] [Site "St Petersburg"] [Date "1993.??.??"] [Round "?"] [White "Serper, Grigory"] [Black "Nikolaidis, Ioannis"] [Result "1-0"] [WhiteElo "2575"] [BlackElo "2440"] [Variant "Standard"] [TimeControl "-"] [ECO "E70"] [Opening "King's Indian Defense: Kramer Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. c4 g6?! { (-0.10 → 0.61) Inaccuracy. e5 was best. } (1... e5 2. Nf3 e4 3. Nd4 Nf6 4. e3 Nc6 5. d3 Bb4+ 6. Bd2 Bxd2+ 7. Nxd2 Nxd4 8. exd4) 2. e4 Bg7 3. d4 d6 4. Nc3 Nf6 5. Nge2 { E70 King's Indian Defense: Kramer Variation } Nbd7 6. Ng3 c6 7. Be2 a6 8. Be3 h5 9. f3 b5 10. c5?! { (0.39 → -0.35) Inaccuracy. O-O was best. } (10. O-O O-O 11. Qd2 e5 12. Rfd1 exd4 13. Bxd4 Qe7 14. h3 Re8 15. a3 Ne5 16. Be3 Bf8) 10... dxc5 11. dxc5 Qc7 12. O-O h4 13. Nh1 Nh5 14. Qd2 e5 15. Nf2 Nf8?! { (0.12 → 0.89) Inaccuracy. Nf4 was best. } (15... Nf4 16. Rfd1 Ne6 17. h3 O-O 18. Qd6 Qxd6 19. cxd6 a5 20. a3 Bb7 21. b4 Rfb8 22. Ng4) 16. a4 b4 17. Nd5 cxd5 18. exd5 f5 19. d6 Qc6?! { (1.00 → 2.11) Inaccuracy. Qa5 was best. } (19... Qa5 20. Nh3) 20. Bb5 axb5 21. axb5 Qxb5?? { (1.69 → 5.79) Blunder. Qb7 was best. } (21... Qb7 22. c6) 22. Rxa8 Qc6 23. Rfa1 f4?! { (5.09 → 6.71) Inaccuracy. Nd7 was best. } (23... Nd7 24. Nd3) 24. R1a7 Nd7 25. Rxc8+ Qxc8 26. Qd5 fxe3 27. Qe6+? { (5.39 → 2.71) Mistake. Nd3 was best. } (27. Nd3) 27... Kf8 28. Rxd7 exf2+ 29. Kf1 Qe8 30. Rf7+ Qxf7 31. Qc8+ Qe8 32. d7 Kf7 33. dxe8=Q+ Rxe8 34. Qb7+ Re7? { (2.37 → 4.59) Mistake. Kf6 was best. } (34... Kf6 35. Qd7 Rh8 36. Kxf2 Nf4 37. c6 Ne6 38. c7 Nxc7 39. Qxc7 Bf8 40. Ke3 Rh5 41. Ke4) 35. c6 e4 36. c7 e3 37. Qd5+ Kf6 38. Qd6+ Kf7 39. Qd5+?? { (4.94 → 0.00) Blunder. Qxe7+ was best. } (39. Qxe7+ Kxe7 40. c8=Q Bxb2 41. Qb7+ Ke6 42. Qxb4 Be5 43. Qc4+ Kd7 44. Qd3+ Ke6 45. Qxe3 Kf6) 39... Kf6 40. Qd6+ Kf7 41. Qxe7+ Kxe7 42. c8=Q Bh6?! { (4.77 → 7.26) Inaccuracy. Bxb2 was best. } (42... Bxb2 43. Qb7+ Ke6 44. Qxb4 Be5 45. Qc4+ Kd6 46. Qd3+ Ke6 47. Qxe3 Nf4 48. g3 hxg3 49. hxg3) 43. Qc5+ Ke8 44. Qb5+ Kd8 45. Qb6+ Kd7 46. Qxg6 e2+ 47. Kxf2 Be3+ 48. Ke1 { Black resigns. } 1-0