Event: Round 4: Mayank Chakraborty - Petukhov, Alan
Date: 2025-07-24
White: Mayank Chakraborty
WhiteTitle: IM
WhiteElo: 2448
Black: Petukhov, Alan
BlackTitle: FM
BlackElo: 2313
Result: 0-1
ECO: B33
Opening: Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Peresypkin's Sacrifice
Variant: Standard
TimeControl: 90+30

1. e4 { [%eval 0.18] [%clk 1:30:18] } 1... c5 { [%eval 0.25] [%clk 1:30:50] } 2. Nf3 { [%eval 0.2] [%clk 1:31:26] } 2... Nc6 { [%eval 0.3] [%clk 1:31:10] } 3. d4 { [%eval 0.27] [%clk 1:31:51] } 3... cxd4 { [%eval 0.27] [%clk 1:31:32] } 4. Nxd4 { [%eval 0.21] [%clk 1:32:18] } 4... Nf6 { [%eval 0.19] [%clk 1:31:55] } 5. Nc3 { [%eval 0.26] [%clk 1:32:44] } 5... e5 { [%eval 0.34] [%clk 1:32:19] } 6. Ndb5 { [%eval 0.31] [%clk 1:33:10] } 6... d6 { [%eval 0.34] [%clk 1:32:41] } 7. Bg5 { [%eval 0.22] [%clk 1:33:36] } 7... a6 { [%eval 0.3] [%clk 1:33:06] } 8. Na3 { [%eval 0.21] [%clk 1:34:02] } 8... b5 { [%eval 0.2] [%clk 1:33:32] } 9. Bxf6 { [%eval 0.17] [%clk 1:34:28] } 9... gxf6 { [%eval 0.17] [%clk 1:33:57] } 10. Nd5 { [%eval 0.22] [%clk 1:34:53] } 10... f5 { [%eval 0.13] [%clk 1:34:06] } 11. Bxb5 { [%eval 0.21] [%clk 1:35:18] } 11... axb5 { [%eval 0.13] [%clk 1:34:32] } 12. Nxb5 { [%eval 0.14] [%clk 1:35:43] } 12... Bb7 { [%eval 0.26] [%clk 1:34:51] } 13. Nbc7+ { [%eval 0.0] [%clk 1:35:31] } 13... Kd7 { [%eval 0.03] [%clk 1:35:17] } 14. Nxa8 { [%eval 0.1] [%clk 1:33:41] } 14... Bxa8 { [%eval 0.16] [%clk 1:35:29] } 15. O-O { [%eval 0.32] [%clk 1:33:58] } 15... fxe4 { [%eval 0.28] [%clk 1:27:24] } 16. Qg4+ { [%eval 0.4] [%clk 1:34:13] } 16... Ke8 { [%eval 0.51] [%clk 1:27:46] } 17. Qxe4 { [%eval 0.42] [%clk 1:34:38] } 17... Bg7 { [%eval 0.61] [%clk 1:23:13] } 18. a4 { [%eval 0.76] [%clk 1:30:49] } 18... Kf8 { [%eval 1.2] [%clk 1:17:58] } 19. b4?! { [%eval 0.37] } { Inaccuracy. a5 was best. } { [%clk 1:13:49] } 19... Nd4 { [%eval 0.34] [%clk 1:14:27] } 20. c3 { [%eval 0.58] [%clk 1:09:29] } 20... f5 { [%eval 0.36] [%clk 1:12:39] } 21. Qd3 { [%eval 0.51] [%clk 1:09:48] } 21... Bxd5 { [%eval 0.39] [%clk 1:10:49] } 22. cxd4 { [%eval 0.34] [%clk 1:10:06] } 22... Be4 { [%eval 0.44] [%clk 1:07:52] } 23. Qb5 { [%eval 0.0] [%clk 1:06:45] } 23... exd4 { [%eval 0.0] [%clk 1:07:35] } 24. f3 { [%eval 0.0] [%clk 1:00:30] } 24... Bc2 { [%eval 0.0] [%clk 1:07:44] } 25. Rae1 { [%eval 0.0] [%clk 0:54:47] } 25... h5?? { [%eval 2.08] } { Blunder. Bf6 was best. } { [%clk 0:51:30] } 26. Rf2?? { [%eval -0.18] } { Blunder. Qd5 was best. } { [%clk 0:41:45] } 26... d3 { [%eval 0.0] [%clk 0:50:21] } 27. Qxf5+ { [%eval 0.0] [%clk 0:41:42] } 27... Bf6 { [%eval 0.0] [%clk 0:49:01] } 28. Re6 { [%eval 0.0] [%clk 0:40:19] } 28... Kg7 { [%eval 0.0] [%clk 0:48:28] } 29. g4 { [%eval 0.0] [%clk 0:38:59] } 29... d2 { [%eval 0.0] [%clk 0:27:24] } 30. Qxc2 { [%eval -0.08] [%clk 0:39:27] } 30... Qc8 { [%eval -0.14] [%clk 0:27:50] } 31. Qxd2 { [%eval -0.49] [%clk 0:37:25] } 31... Qxe6 { [%eval -0.36] [%clk 0:28:04] } 32. g5 { [%eval -0.83] [%clk 0:35:17] } 32... Ba1 { [%eval -0.78] [%clk 0:26:03] } 33. Rf1 { [%eval -0.93] [%clk 0:26:08] } 33... Be5 { [%eval -0.95] [%clk 0:25:52] } 34. f4 { [%eval -1.02] [%clk 0:24:58] } 34... Qg4+ { [%eval -0.86] [%clk 0:25:41] } 35. Qg2 { [%eval -1.0] [%clk 0:25:24] } 35... Bxf4 { [%eval -0.92] [%clk 0:25:52] } 36. Qxg4 { [%eval -0.98] [%clk 0:24:54] } 36... Be3+ { [%eval -1.04] [%clk 0:26:20] } 37. Kg2 { [%eval -0.96] [%clk 0:25:18] } 37... hxg4 { [%eval -0.92] [%clk 0:26:43] } 38. Kg3 { [%eval -1.02] [%clk 0:23:22] } 38... Bxg5 { [%eval -0.94] [%clk 0:26:53] } 39. Kxg4 { [%eval -0.84] [%clk 0:23:45] } 39... Bf6 { [%eval -1.15] [%clk 0:26:28] } 40. Kf5?? { [%eval -3.21] } { Blunder. a5 was best. } { [%clk 0:19:20] } 40... Kf7 { [%eval -3.34] [%clk 0:25:58] } 41. a5 { [%eval -3.59] [%clk 0:18:47] } 41... Rxh2 { [%eval -3.3] [%clk 0:22:54] } 42. a6 { [%eval -4.03] [%clk 0:17:03] } 42... Ra2 { [%eval -3.73] [%clk 0:22:36] } 43. b5?! { [%eval -5.14] } { Inaccuracy. Rh1 was best. } { [%clk 0:17:32] } 43... Rb2 { [%eval -5.17] [%clk 0:22:47] } 44. Ke4 { [%eval -5.17] [%clk 0:16:46] } 44... Rxb5 { [%eval -5.11] [%clk 0:23:02] } 45. Rc1 { [%eval -5.09] [%clk 0:17:06] } 45... Re5+ { [%eval -5.29] [%clk 0:22:58] } 46. Kd3 { [%eval -5.18] [%clk 0:17:29] } 46... Rd5+ { [%eval -5.18] [%clk 0:22:54] } 47. Ke4 { [%eval -5.11] [%clk 0:17:51] } 47... Ra5 { [%eval -4.93] [%clk 0:23:13] } 48. Rc7+ { [%eval -5.42] [%clk 0:18:16] } 48... Ke6 { [%eval -5.37] [%clk 0:23:42] } 49. a7 { [%eval -5.4] [%clk 0:18:43] } 49... Ra3 { [%eval -5.23] [%clk 0:23:32] } 50. Rb7 { [%eval -5.43] [%clk 0:18:22] } 50... Be5 { [%clk 0:23:34] } 0-1