Event: Round 4: Aleksandr Ostrovsky - Brandon Jacobson
Date: 2021-10-19
White: Aleksandr Ostrovsky
WhiteTitle: IM
Black: Brandon Jacobson
BlackTitle: GM
Result: 0-1
ECO: C75
Opening: Ruy Lopez: Morphy Defense, Modern Steinitz Defense
Variant: Standard

1. e4 { [%eval 0.28] [%clk 1:23:20] } 1... e5 { [%eval 0.12] [%clk 1:30:52] } 2. Nf3 { [%eval 0.17] [%clk 1:23:14] } 2... Nc6 { [%eval 0.12] [%clk 1:31:14] } 3. Bb5 { [%eval 0.2] [%clk 1:22:41] } 3... a6 { [%eval 0.22] [%clk 1:31:39] } 4. Ba4 { [%eval 0.4] [%clk 1:23:07] } 4... Nge7 { [%eval 0.54] [%clk 1:31:45] } 5. c3 { [%eval 0.55] [%clk 1:19:07] } 5... d6 { [%eval 0.57] [%clk 1:32:01] } 6. d4 { [%eval 0.76] [%clk 1:18:15] } 6... Bd7 { [%eval 1.05] [%clk 1:32:27] } 7. O-O { [%eval 0.63] [%clk 1:13:07] } 7... Ng6 { [%eval 0.67] [%clk 1:32:50] } 8. d5 { [%eval 0.82] [%clk 0:54:41] } 8... Nb8 { [%eval 0.59] [%clk 1:32:37] } 9. Bxd7+ { [%eval 0.79] [%clk 0:54:42] } 9... Qxd7 { [%eval 0.89] [%clk 1:33:02] } 10. c4 { [%eval 0.73] [%clk 0:53:08] } 10... Be7 { [%eval 0.73] [%clk 1:33:25] } 11. Nc3 { [%eval 0.86] [%clk 0:52:31] } 11... O-O { [%eval 0.87] [%clk 1:33:49] } 12. Be3 { [%eval 0.76] [%clk 0:50:11] } 12... f5 { [%eval 0.98] [%clk 1:34:12] } 13. exf5 { [%eval 0.48] [%clk 0:49:01] } 13... Qxf5 { [%eval 0.32] [%clk 1:34:38] } 14. Nd2 { [%eval 0.44] [%clk 0:42:10] } 14... Nh4 { [%eval 0.28] [%clk 1:34:57] } 15. Nde4 { [%eval 0.41] [%clk 0:26:44] } 15... Qg6 { [%eval 0.26] [%clk 1:28:25] } 16. Ng3 { [%eval 0.25] [%clk 0:27:09] } 16... Bg5?! { [%eval 1.18] } { Inaccuracy. Nd7 was best. } { [%clk 1:26:02] } 17. Qh5? { [%eval 0.03] } { Mistake. Bxg5 was best. } { [%clk 0:10:40] } 17... Qxh5 { [%eval 0.03] [%clk 1:09:09] } 18. Nxh5 { [%eval 0.02] [%clk 0:11:08] } 18... Bf4 { [%eval 0.35] [%clk 1:09:34] } 19. Rae1 { [%eval 0.36] [%clk 0:05:56] } 19... g6 { [%eval 0.12] [%clk 1:05:24] } 20. Ng3 { [%eval 0.61] [%clk 0:01:57] } 20... Nd7 { [%eval 0.43] [%clk 1:05:44] } 21. Nge4 { [%eval 0.37] [%clk 0:01:10] } 21... h6 { [%eval 0.26] [%clk 1:03:45] } 22. Kh1 { [%eval 0.05] [%clk 0:01:03] } 22... Rf5 { [%eval 0.42] [%clk 0:49:56] } 23. Nd2 { [%eval -0.06] [%clk 0:00:34] } 23... Raf8 { [%eval 0.0] [%clk 0:46:12] } 24. g3 { [%eval 0.0] [%clk 0:00:44] } 24... Bxe3 { [%eval 0.0] [%clk 0:46:39] } 25. fxe3 { [%eval -0.06] [%clk 0:01:13] } 25... Rxf1+ { [%eval 0.0] [%clk 0:47:02] } 26. Rxf1 { [%eval 0.0] [%clk 0:01:35] } 26... Nf5 { [%eval 0.0] [%clk 0:47:28] } 27. e4 { [%eval -0.39] [%clk 0:00:40] } 27... Nd4 { [%eval -0.3] [%clk 0:44:12] } 28. Rxf8+ { [%eval -0.28] [%clk 0:01:06] } 28... Kxf8 { [%eval -0.36] [%clk 0:44:40] } 29. Kg2 { [%eval -0.32] [%clk 0:01:11] } 29... Nc5 { [%eval -0.29] [%clk 0:44:54] } 30. b3 { [%eval -0.44] [%clk 0:00:49] } 30... b5 { [%eval 0.0] [%clk 0:44:08] } 31. cxb5 { [%eval 0.0] [%clk 0:00:33] } 31... axb5 { [%eval 0.0] [%clk 0:44:37] } 32. b4 { [%eval 0.01] [%clk 0:00:38] } 32... Nd3 { [%eval 0.0] [%clk 0:41:12] } 33. a3 { [%eval -0.14] [%clk 0:00:59] } 33... Ne1+ { [%eval -0.13] [%clk 0:38:26] } 34. Kf2 { [%eval -0.11] [%clk 0:01:26] } 34... Nec2 { [%eval -0.08] [%clk 0:38:52] } 35. Ndb1 { [%eval -0.05] [%clk 0:01:21] } 35... Ke7 { [%eval 0.0] [%clk 0:39:21] } 36. Ne2 { [%eval -0.05] [%clk 0:00:49] } 36... h5 { [%eval 0.0] [%clk 0:31:08] } 37. Nec3 { [%eval 0.0] [%clk 0:00:44] } 37... g5 { [%eval 0.0] [%clk 0:30:57] } 38. h3 { [%eval -0.28] [%clk 0:01:07] } 38... Kd7 { [%eval -0.03] [%clk 0:30:34] } 39. Nd1 { [%eval 0.0] [%clk 0:00:41] } 39... Ke7 { [%eval -0.07] [%clk 0:28:40] } 40. Ndc3 { [%eval -0.27] [%clk 0:01:02] } 40... h4 { [%eval -0.55] [%clk 0:29:01] } 41. gxh4 { [%eval 0.0] [%clk 0:00:32] } 41... gxh4 { [%eval 0.0] [%clk 0:29:28] } 42. Ne2?! { [%eval -0.64] } { Inaccuracy. Nd1 was best. } { [%clk 0:00:40] } 42... Kf6 { [%eval -1.12] [%clk 0:09:54] } 43. Nc1 { [%eval -1.29] [%clk 0:01:08] } 43... Kg6 { [%eval -0.69] [%clk 0:10:13] } 44. Nd3 { [%eval -1.01] [%clk 0:01:05] } 44... Kg5 { [%eval -0.64] [%clk 0:10:32] } 45. Kf1 { [%eval -1.4] [%clk 0:00:44] } 45... Ne3+ { [%eval -0.99] [%clk 0:08:48] } 46. Kf2 { [%eval -1.51] [%clk 0:01:04] } 46... Nc4 { [%eval -1.36] [%clk 0:08:27] } 47. Nc3 { [%eval -1.51] [%clk 0:00:32] } 47... Nxa3 { [%eval -1.01] [%clk 0:08:39] } 48. Nd1?! { [%eval -1.66] } { Inaccuracy. Ne1 was best. } { [%clk 0:00:32] } 48... Nac2 { [%eval -1.16] [%clk 0:08:06] } 49. Nc3 { [%eval -1.27] [%clk 0:00:46] } 49... Kf6 { [%eval -1.23] [%clk 0:05:52] } 50. Nd1 { [%eval -1.25] [%clk 0:00:38] } 50... Ke7 { [%eval -1.1] [%clk 0:05:41] } 51. Nc3 { [%eval -1.16] [%clk 0:00:51] } 51... Kd7 { [%eval -1.43] [%clk 0:05:57] } 52. Kg2 { [%eval -1.28] [%clk 0:00:54] } 52... c6?! { [%eval -0.65] } { Inaccuracy. Ke8 was best. } { [%clk 0:04:06] } 53. Kf2 { [%eval -1.16] [%clk 0:00:43] } 53... Kc7?! { [%eval -0.63] } { Inaccuracy. cxd5 was best. } { [%clk 0:02:10] } 54. Kg2 { [%eval -0.68] [%clk 0:00:47] } 54... Kb6 { [%eval -0.75] [%clk 0:02:32] } 55. Kf2 { [%eval -0.83] [%clk 0:00:56] } 55... Kb7 { [%eval -0.75] [%clk 0:01:15] } 56. Kg2 { [%eval -1.11] [%clk 0:01:14] } 56... Kb6?! { [%eval -0.59] } { Inaccuracy. cxd5 was best. } { [%clk 0:01:44] } 57. Kf2 { [%eval -0.66] [%clk 0:01:43] } 57... Nb3 { [%eval -0.85] [%clk 0:01:45] } 58. dxc6 { [%eval -1.14] [%clk 0:01:37] } 58... Nbd4 { [%eval -1.14] [%clk 0:02:09] } 59. Nd5+ { [%eval -0.81] [%clk 0:01:09] } 59... Kxc6 { [%eval -1.15] [%clk 0:02:37] } 60. Kg2?! { [%eval -2.21] } { Inaccuracy. Ne7+ was best. } { [%clk 0:00:45] } 60... Ne6 { [%eval -2.17] [%clk 0:02:22] } 61. Ne7+ { [%eval -2.7] [%clk 0:00:33] } 61... Kd7 { [%eval -2.79] [%clk 0:02:50] } 62. Nd5 { [%eval -2.46] [%clk 0:00:44] } 62... Ng5 { [%eval -2.65] [%clk 0:01:45] } 63. Nf2 { [%eval -2.34] [%clk 0:00:42] } 63... Nd4 { [%eval -2.88] [%clk 0:00:46] } 64. Kf1 { [%eval -3.07] [%clk 0:00:55] } 64... Ndf3 { [%eval -2.96] [%clk 0:00:40] } 65. Nc3?! { [%eval -4.0] } { Inaccuracy. Kg2 was best. } { [%clk 0:00:38] } 65... Kc6 { [%eval -3.51] [%clk 0:01:02] } 66. Kg2 { [%eval -4.11] [%clk 0:00:43] } 66... Nd4 { [%eval -3.72] [%clk 0:01:27] } 67. Nd3 { [%eval -3.53] [%clk 0:00:37] } 67... Nde6 { [%eval -3.79] [%clk 0:01:15] } 68. Kh2 { [%eval -3.71] [%clk 0:00:40] } 68... Nf3+ { [%eval -3.46] [%clk 0:00:56] } 69. Kg2 { [%eval -3.38] [%clk 0:01:08] } 69... Nd2 { [%eval -3.5] [%clk 0:01:07] } 70. Nf2?! { [%eval -4.56] } { Inaccuracy. Kg1 was best. } { [%clk 0:00:33] } 70... Nf4+ { [%eval -4.34] [%clk 0:01:16] } 71. Kh2 { [%eval -4.82] [%clk 0:00:51] } 71... Nf3+ { [%eval -4.96] [%clk 0:00:43] } 72. Kh1 { [%eval -4.63] [%clk 0:01:20] } 72... d5 { [%eval -4.5] [%clk 0:01:08] } 73. exd5+ { [%eval -4.46] [%clk 0:01:30] } 73... Nxd5 { [%eval -4.54] [%clk 0:01:36] } 74. Nfe4 { [%eval -5.09] [%clk 0:01:12] } 74... Nxb4 { [%eval -5.39] [%clk 0:01:39] } 75. Kg2 { [%eval -5.34] [%clk 0:01:39] } 75... Nd4 { [%eval -5.12] [%clk 0:01:52] } 76. Nf6 { [%eval -5.75] [%clk 0:01:49] } 76... Nd3 { [%eval -6.38] [%clk 0:02:09] } 77. Ng4 { [%eval -6.08] [%clk 0:02:15] } 77... b4 { [%eval -5.67] [%clk 0:02:26] } 78. Nb1 { [%eval -5.99] [%clk 0:02:39] } 78... Nf4+ { [%eval -6.0] [%clk 0:02:14] } 79. Kh2?! { [%eval -9.03] } { Inaccuracy. Kf1 was best. } { [%clk 0:00:49] } 79... Nf3+ { [%eval -9.3] [%clk 0:02:09] } 80. Kh1 { [%eval -9.13] [%clk 0:01:14] } 80... Nxh3 { [%eval -8.47] [%clk 0:01:44] } 81. Kg2 { [%eval -8.49] [%clk 0:01:02] } 81... Nhg5 { [%eval -7.84] [%clk 0:02:11] } 82. Ne3 { [%eval -8.07] [%clk 0:01:16] } 82... Kc5 { [%eval -8.43] [%clk 0:02:32] } 83. Nf5 { [%eval -9.15] [%clk 0:01:33] } 83... e4 { [%eval -8.83] [%clk 0:02:52] } 0-1