Event: Round 4: Praveen Balakrishnan - Grigoriy Oparin
Date: 2023-12-28
White: Praveen Balakrishnan
WhiteTitle: GM
Black: Grigoriy Oparin
BlackTitle: GM
Result: 0-1
ECO: B30
Opening: Sicilian Defense: Nyezhmetdinov-Rossolimo Attack
Variant: Standard

1. e4 { [%eval 0.2] [%clk 1:17:56] } 1... c5 { [%eval 0.33] [%clk 1:30:00] } 2. Nf3 { [%eval 0.17] [%clk 1:17:56] } 2... Nc6 { [%eval 0.29] [%clk 1:30:00] } 3. Bb5 { [%eval 0.3] [%clk 1:17:56] } 3... e5 { [%eval 0.69] [%clk 1:30:00] } 4. O-O { [%eval 0.43] [%clk 1:17:56] } 4... Bd6 { [%eval 0.52] [%clk 1:30:00] } 5. c3 { [%eval 0.48] [%clk 1:17:56] } 5... a6 { [%eval 0.62] [%clk 1:30:00] } 6. Ba4 { [%eval 0.42] [%clk 1:17:56] } 6... b5 { [%eval 0.62] [%clk 1:30:00] } 7. Bb3 { [%eval 0.37] [%clk 1:17:56] } 7... c4 { [%eval 0.8] [%clk 1:30:00] } 8. Bc2 { [%eval 0.33] [%clk 1:17:56] } 8... Nf6 { [%eval 0.47] [%clk 1:30:00] } 9. d4 { [%eval 0.35] [%clk 1:17:56] } 9... cxd3 { [%eval 0.35] [%clk 1:30:00] } 10. Qxd3 { [%eval 0.29] [%clk 1:17:56] } 10... Bc7 { [%eval 0.41] [%clk 1:30:00] } 11. Rd1 { [%eval 0.35] [%clk 1:16:37] } 11... h6 { [%eval 0.36] [%clk 1:30:00] } 12. Nbd2 { [%eval 0.19] [%clk 0:53:47] } 12... O-O { [%eval 0.27] [%clk 1:30:00] } 13. Qe2 { [%eval 0.2] [%clk 0:50:25] } 13... d6 { [%eval 0.53] [%clk 1:26:37] } 14. Nf1 { [%eval 0.5] [%clk 0:50:01] } 14... Qe8 { [%eval 0.74] [%clk 1:16:46] } 15. b3 { [%eval 0.32] [%clk 0:42:09] } 15... b4 { [%eval 0.45] [%clk 1:04:51] } 16. Bb2?! { [%eval -0.11] } { Inaccuracy. c4 was best. } { [%clk 0:33:50] } 16... a5 { [%eval 0.15] [%clk 0:57:13] } 17. a3 { [%eval -0.26] [%clk 0:30:27] } 17... Bb7 { [%eval 0.0] [%clk 0:50:15] } 18. Qe1 { [%eval -0.03] [%clk 0:26:43] } 18... bxc3 { [%eval -0.26] [%clk 0:41:57] } 19. Bxc3 { [%eval -0.12] [%clk 0:26:29] } 19... Qe6 { [%eval -0.1] [%clk 0:41:57] } 20. Ng3 { [%eval -0.11] [%clk 0:16:39] } 20... Ne7 { [%eval -0.09] [%clk 0:39:50] } 21. b4 { [%eval -0.09] [%clk 0:14:15] } 21... axb4 { [%eval -0.04] [%clk 0:39:47] } 22. axb4 { [%eval -0.36] [%clk 0:13:22] } 22... Bb6 { [%eval -0.46] [%clk 0:39:17] } 23. h3 { [%eval -0.38] [%clk 0:11:56] } 23... Rfc8 { [%eval -0.28] [%clk 0:37:10] } 24. Rxa8 { [%eval -0.24] [%clk 0:10:38] } 24... Bxa8 { [%eval -0.11] [%clk 0:37:10] } 25. Bd3 { [%eval -0.25] [%clk 0:09:32] } 25... Ng6 { [%eval -0.3] [%clk 0:34:35] } 26. Bd2 { [%eval -0.3] [%clk 0:04:18] } 26... Nf4 { [%eval -0.06] [%clk 0:25:24] } 27. Bb1 { [%eval -0.1] [%clk 0:02:40] } 27... d5 { [%eval 0.17] [%clk 0:19:41] } 28. exd5 { [%eval 0.17] [%clk 0:02:31] } 28... Nxh3+? { [%eval 1.38] } { Mistake. Bxd5 was best. } { [%clk 0:19:41] } 29. gxh3 { [%eval 1.48] [%clk 0:01:41] } 29... Qxd5 { [%eval 1.42] [%clk 0:19:13] } 30. Ne4?? { [%eval -1.62] } { Blunder. Nh4 was best. } { [%clk 0:00:46] } 30... Nxe4 { [%eval -1.16] [%clk 0:19:13] } 31. Qxe4 { [%eval -1.34] [%clk 0:00:46] } 31... Qxe4 { [%eval -0.96] [%clk 0:19:13] } 32. Bxe4 { [%eval -1.11] [%clk 0:00:46] } 32... Bxe4 { [%eval -1.05] [%clk 0:19:13] } 33. Nxe5 { [%eval -0.84] [%clk 0:00:46] } 33... Rc2 { [%eval -0.6] [%clk 0:13:29] } 34. Nd7 { [%eval -0.38] [%clk 0:00:25] } 34... Bd4 { [%eval -0.64] [%clk 0:10:35] } 35. Be1 { [%eval -0.78] [%clk 0:00:23] } 35... Rc4 { [%eval -0.84] [%clk 0:10:35] } 36. Nc5?! { [%eval -1.83] } { Inaccuracy. b5 was best. } { [%clk 0:00:22] } 36... Bxc5? { [%eval -0.37] } { Mistake. Bc2 was best. } { [%clk 0:10:01] } 37. bxc5 { [%eval -0.24] [%clk 0:00:22] } 37... Rxc5 { [%eval -0.23] [%clk 0:10:01] } 38. Rd4?? { [%eval -2.69] } { Blunder. h4 was best. } { [%clk 0:00:22] } 38... Rg5+ { [%eval -2.74] [%clk 0:05:36] } 39. Kh2 { [%eval -2.74] [%clk 0:00:22] } 39... Rg2+ { [%eval -2.76] [%clk 0:05:36] } 40. Kh1 { [%eval -2.81] [%clk 0:00:22] } 40... Bf3 { [%eval -2.62] [%clk 0:05:36] } 41. Rd8+ { [%eval -2.7] [%clk 0:20:09] } 41... Kh7 { [%eval -2.67] [%clk 0:35:36] } 42. Rd3 { [%eval -2.74] [%clk 0:20:09] } 42... Rxf2+ { [%eval -2.63] [%clk 0:35:12] } 43. Kg1 { [%eval -2.62] [%clk 0:20:09] } 43... Rg2+ { [%eval -2.68] [%clk 0:31:28] } 44. Kf1 { [%eval -2.71] [%clk 0:20:09] } 44... Bc6 { [%eval -2.51] [%clk 0:31:28] } 45. Rc3 { [%eval -2.78] [%clk 0:17:57] } 45... Rg6 { [%eval -2.65] [%clk 0:31:28] } 46. h4 { [%eval -2.83] [%clk 0:17:57] } 46... Re6 { [%eval -2.66] [%clk 0:30:43] } 47. Kf2 { [%eval -3.08] [%clk 0:16:55] } 47... g5 { [%eval -3.02] [%clk 0:29:44] } 48. hxg5 { [%eval -3.08] [%clk 0:16:55] } 48... hxg5 { [%eval -3.17] [%clk 0:29:44] } 49. Bd2 { [%eval -3.2] [%clk 0:16:29] } 49... Kg6 { [%eval -2.99] [%clk 0:29:44] } 50. Rd3 { [%eval -3.11] [%clk 0:15:15] } 50... Be4 { [%eval -3.04] [%clk 0:29:37] } 51. Rd8 { [%eval -2.98] [%clk 0:15:15] } 51... f6 { [%eval -2.93] [%clk 0:29:37] } 52. Bb4 { [%eval -3.41] [%clk 0:14:19] } 52... f5 { [%eval -3.68] [%clk 0:28:45] } 53. Rd6? { [%eval -6.06] } { Mistake. Rg8+ was best. } { [%clk 0:08:53] } 53... Rxd6 { [%eval -6.99] [%clk 0:28:45] } 54. Bxd6 { [%eval -6.6] [%clk 0:08:53] } 54... f4 { [%eval -6.53] [%clk 0:28:45] } 55. Kg1 { [%eval -7.11] [%clk 0:07:30] } 55... Kf5 { [%eval -6.74] [%clk 0:28:45] } 56. Kh2 { [%eval -7.79] [%clk 0:07:30] } 56... g4 { [%eval -6.99] [%clk 0:28:45] } 57. Be7 { [%eval -7.62] [%clk 0:07:05] } 57... Bd5 { [%eval -8.6] [%clk 0:28:45] } 58. Bd8 { [%eval -7.79] [%clk 0:02:46] } 58... Ke4 { [%eval -7.49] [%clk 0:28:45] } 59. Bc7 { [%eval -7.38] [%clk 0:02:33] } 59... Kf3 { [%eval -8.25] [%clk 0:28:45] } 60. Bd6 { [%eval -9.46] [%clk 0:02:33] } 60... Be6 { [%eval -36.1] [%clk 0:28:45] } 61. Bc5 { [%eval #-20] [%clk 0:02:18] } 61... g3+ { [%eval -38.15] [%clk 0:28:45] } 62. Kg1 { [%eval -37.85] [%clk 0:02:18] } 62... Kg4 { [%eval -35.22] [%clk 0:28:45] } 63. Bb6 { [%eval -38.21] [%clk 0:02:18] } 63... f3 { [%eval -38.16] [%clk 0:28:45] } 64. Bc5?! { [%eval #-13] } { Checkmate is now unavoidable. Kf1 was best. } { [%clk 0:02:18] } 64... Kf5?! { [%eval -37.82] } { Lost forced checkmate sequence. Bc4 was best. } { [%clk 0:28:45] } 65. Bb6?! { [%eval #-13] } { Checkmate is now unavoidable. Kf1 was best. } { [%clk 0:01:59] } 65... Ke4?! { [%eval -35.23] } { Lost forced checkmate sequence. Bc4 was best. } { [%clk 0:28:45] } 66. Kf1 { [%eval -37.02] [%clk 0:01:59] } 66... Bc4+ { [%eval -37.86] [%clk 0:28:45] } 67. Kg1?! { [%eval #-11] } { Checkmate is now unavoidable. Ke1 was best. } { [%clk 0:01:59] } 67... Kd3 { [%eval #-9] [%clk 0:28:45] } 68. Kf1 { [%eval #-9] [%clk 0:01:59] } 68... Kd2+ { [%eval #-8] [%clk 0:28:45] } 69. Kg1 { [%eval #-8] [%clk 0:01:59] } 69... Ke2 { [%eval #-7] [%clk 0:28:45] } 0-1