Event: Round 8: Erdos, Viktor - Kosteniuk, Alexandra
Date: 2025-06-01
White: Erdos, Viktor
WhiteTitle: GM
WhiteElo: 2525
Black: Kosteniuk, Alexandra
BlackTitle: GM
BlackElo: 2483
Result: 1/2-1/2
ECO: E44
Opening: Nimzo-Indian Defense: St. Petersburg Variation, American Variation
Variant: Standard
TimeControl: 10+5

1. d4 { [%eval 0.17] [%clk 0:10:08] } 1... Nf6 { [%eval 0.19] [%clk 0:10:09] } 2. c4 { [%eval 0.18] [%clk 0:10:12] } 2... e6 { [%eval 0.14] [%clk 0:10:13] } 3. Nc3 { [%eval 0.09] [%clk 0:10:16] } 3... Bb4 { [%eval 0.09] [%clk 0:10:18] } 4. e3 { [%eval 0.11] [%clk 0:10:19] } 4... b6 { [%eval 0.31] [%clk 0:10:22] } 5. Ne2 { [%eval 0.26] [%clk 0:10:13] } 5... Ne4 { [%eval 0.41] [%clk 0:10:19] } 6. Qc2 { [%eval 0.26] [%clk 0:10:10] } 6... Bb7 { [%eval 0.27] [%clk 0:10:20] } 7. a3 { [%eval 0.24] [%clk 0:10:14] } 7... Bxc3+ { [%eval 0.25] [%clk 0:10:20] } 8. Nxc3 { [%eval 0.52] [%clk 0:10:17] } 8... Nxc3 { [%eval 0.4] [%clk 0:10:15] } 9. Qxc3 { [%eval 0.48] [%clk 0:10:21] } 9... d6 { [%eval 0.42] [%clk 0:10:08] } 10. h4 { [%eval 0.45] [%clk 0:10:24] } 10... Nd7 { [%eval 0.43] [%clk 0:09:56] } 11. Bd2 { [%eval 0.39] [%clk 0:09:36] } 11... f5 { [%eval 0.45] [%clk 0:09:25] } 12. O-O-O { [%eval 0.47] [%clk 0:09:17] } 12... Qe7 { [%eval 0.54] [%clk 0:09:16] } 13. f3 { [%eval 0.59] [%clk 0:09:20] } 13... c5 { [%eval 0.6] [%clk 0:08:52] } 14. Be1 { [%eval 0.44] [%clk 0:07:05] } 14... e5?! { [%eval 1.56] } { Inaccuracy. O-O was best. } { [%clk 0:07:33] } 15. d5?! { [%eval 0.93] } { Inaccuracy. h5 was best. } { [%clk 0:06:55] } 15... e4?! { [%eval 1.94] } { Inaccuracy. O-O-O was best. } { [%clk 0:07:33] } 16. h5 { [%eval 1.85] [%clk 0:05:31] } 16... h6 { [%eval 1.84] [%clk 0:03:18] } 17. fxe4 { [%eval 1.66] [%clk 0:04:28] } 17... fxe4 { [%eval 1.62] [%clk 0:03:17] } 18. Bg3 { [%eval 1.32] [%clk 0:04:31] } 18... O-O-O? { [%eval 2.61] } { Mistake. O-O was best. } { [%clk 0:02:53] } 19. Be2 { [%eval 1.98] [%clk 0:04:26] } 19... Rdf8 { [%eval 2.07] [%clk 0:02:12] } 20. Bg4 { [%eval 1.66] [%clk 0:01:21] } 20... Qg5 { [%eval 2.01] [%clk 0:02:06] } 21. Rh4 { [%eval 1.55] [%clk 0:01:18] } 21... Kc7 { [%eval 1.55] [%clk 0:02:04] } 22. Rdh1 { [%eval 1.49] [%clk 0:00:28] } 22... Bc8 { [%eval 1.42] [%clk 0:01:41] } 23. Bf4 { [%eval 1.12] [%clk 0:00:17] } 23... Qe7 { [%eval 1.2] [%clk 0:01:44] } 24. Be2 { [%eval 0.93] [%clk 0:00:12] } 24... Nf6 { [%eval 1.26] [%clk 0:01:29] } 25. b4 { [%eval 1.31] [%clk 0:00:14] } 25... Kb7 { [%eval 1.31] [%clk 0:01:18] } 26. Kd2 { [%eval 1.2] [%clk 0:00:18] } 26... Bf5?! { [%eval 2.0] } { Inaccuracy. Bd7 was best. } { [%clk 0:01:01] } 27. a4?! { [%eval 1.03] } { Inaccuracy. bxc5 was best. } { [%clk 0:00:18] } 27... Nd7?! { [%eval 1.66] } { Inaccuracy. Rc8 was best. } { [%clk 0:00:55] } 28. a5 { [%eval 1.23] [%clk 0:00:09] } 28... cxb4 { [%eval 1.17] [%clk 0:00:51] } 29. Qxb4 { [%eval 1.27] [%clk 0:00:13] } 29... Nc5 { [%eval 1.24] [%clk 0:00:54] } 30. g4?! { [%eval 0.27] } { Inaccuracy. Rb1 was best. } { [%clk 0:00:12] } 30... Bh7?! { [%eval 1.31] } { Inaccuracy. Bd7 was best. } { [%clk 0:00:48] } 31. axb6? { [%eval -0.04] } { Mistake. R4h3 was best. } { [%clk 0:00:14] } 31... Rxf4 { [%eval -0.09] [%clk 0:00:20] } 32. bxa7+ { [%eval -0.15] [%clk 0:00:18] } 32... Ka8 { [%eval -0.2] [%clk 0:00:25] } 33. exf4?? { [%eval -4.92] } { Blunder. Rb1 was best. } { [%clk 0:00:21] } 33... e3+ { [%eval -4.8] [%clk 0:00:29] } 34. Kc1?? { [%eval #-18] } { Checkmate is now unavoidable. Ke1 was best. } { [%clk 0:00:08] } 34... Bd3?? { [%eval -4.75] } { Lost forced checkmate sequence. Qxa7 was best. } { [%clk 0:00:28] } 35. Kd1 { [%eval -4.36] [%clk 0:00:07] } 35... Qe4 { [%eval -3.96] [%clk 0:00:26] } 36. R4h2 { [%eval -3.98] [%clk 0:00:05] } 36... Bxe2+ { [%eval -3.89] [%clk 0:00:28] } 37. Kxe2 { [%eval -3.9] [%clk 0:00:09] } 37... Qc2+?? { [%eval 0.35] } { Blunder. Qxf4 was best. } { [%clk 0:00:22] } 38. Kf3 { [%eval 0.07] [%clk 0:00:12] } 38... Qe4+ { [%eval 0.06] [%clk 0:00:21] } 39. Kg3 { [%eval 0.22] [%clk 0:00:15] } 39... e2 { [%eval 0.37] [%clk 0:00:25] } 40. Rb1 { [%eval 0.67] [%clk 0:00:17] } 40... Qe3+ { [%eval 0.18] [%clk 0:00:25] } 41. Kh4 { [%eval 0.19] [%clk 0:00:21] } 41... Qe7+ { [%eval 0.15] [%clk 0:00:28] } 42. Kh3 { [%eval 0.29] [%clk 0:00:24] } 42... Qe3+ { [%eval 0.56] [%clk 0:00:29] } 43. Kg2 { [%eval 0.42] [%clk 0:00:22] } 43... Qe4+ { [%eval 0.38] [%clk 0:00:33] } 44. Kg1 { [%eval 0.0] [%clk 0:00:23] } 44... Qe3+ { [%eval 0.49] [%clk 0:00:23] } 45. Kh1 { [%eval 0.0] [%clk 0:00:19] } 45... Qf3+ { [%eval 0.0] [%clk 0:00:23] } 46. Rg2 { [%eval 0.0] [%clk 0:00:22] } 46... Qf1+ { [%eval 0.0] [%clk 0:00:13] } 47. Kh2 { [%eval 0.0] [%clk 0:00:26] } 47... Qxf4+ { [%eval 0.0] [%clk 0:00:17] } 48. Kh3 { [%eval 0.0] [%clk 0:00:27] } 48... Qf3+ { [%eval 0.0] [%clk 0:00:20] } 49. Rg3 { [%eval 0.0] [%clk 0:00:23] } 49... Qf1+ { [%eval 0.0] [%clk 0:00:23] } 50. Kh2 { [%eval 0.0] [%clk 0:00:27] } 50... Qf2+ { [%eval 0.0] [%clk 0:00:25] } 51. Rg2 { [%eval 0.0] [%clk 0:00:30] } 51... Qf4+ { [%eval 0.0] [%clk 0:00:28] } 52. Kh3 { [%eval 0.0] [%clk 0:00:21] } 52... Qf3+ { [%eval 0.0] [%clk 0:00:32] } 53. Kh2 { [%eval 0.0] [%clk 0:00:24] } 53... Qf4+ { [%eval 0.0] [%clk 0:00:28] } 54. Kh3 { [%eval 0.0] [%clk 0:00:27] } 54... Qf3+ { [%eval 0.0] [%clk 0:00:32] } 55. Kh2 { [%eval 0.0] [%clk 0:00:24] } 1/2-1/2