Event: Round 4: Aleksandr Ostrovskiy - Raven Sturt
Date: 2023-05-27
White: Aleksandr Ostrovskiy
WhiteTitle: IM
Black: Raven Sturt
BlackTitle: GM
Result: 1/2-1/2
ECO: B51
Opening: Sicilian Defense: Moscow Variation
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:22:38] } 1... c5 { [%eval 0.32] [%clk 1:30:58] } 2. Nf3 { [%eval 0.0] [%clk 1:22:31] } 2... d6 { [%eval 0.0] [%clk 1:31:23] } 3. Bb5+ { [%eval 0.0] [%clk 1:22:20] } 3... Nd7 { [%eval 0.24] [%clk 1:31:48] } 4. a4 { [%eval 0.14] [%clk 1:22:07] } 4... Nf6 { [%eval 0.12] [%clk 1:31:09] } 5. Nc3 { [%eval 0.1] [%clk 1:21:29] } 5... a6 { [%eval 0.13] [%clk 1:28:36] } 6. Be2 { [%eval 0.0] [%clk 1:20:43] } 6... g6 { [%eval 0.09] [%clk 1:26:30] } 7. a5 { [%eval 0.2] [%clk 1:15:25] } 7... b5 { [%eval 0.15] [%clk 1:24:06] } 8. axb6 { [%eval 0.24] [%clk 1:15:37] } 8... Bb7 { [%eval 0.22] [%clk 1:24:31] } 9. d3 { [%eval 0.28] [%clk 1:14:56] } 9... Bg7 { [%eval 0.33] [%clk 1:24:40] } 10. O-O { [%eval 0.24] [%clk 1:15:16] } 10... O-O { [%eval 0.35] [%clk 1:23:39] } 11. Qd2 { [%eval 0.0] [%clk 1:03:16] } 11... e6 { [%eval -0.01] [%clk 1:03:33] } 12. Qf4 { [%eval 0.0] [%clk 0:59:21] } 12... Ne8 { [%eval 0.45] [%clk 1:01:00] } 13. Qg3 { [%eval 0.43] [%clk 0:56:45] } 13... Nxb6 { [%eval 0.44] [%clk 0:56:44] } 14. Bg5 { [%eval 0.39] [%clk 0:52:19] } 14... Qd7 { [%eval 0.53] [%clk 0:52:05] } 15. Nd2 { [%eval 0.18] [%clk 0:42:39] } 15... Nc7 { [%eval 0.27] [%clk 0:50:06] } 16. Nc4 { [%eval 0.43] [%clk 0:36:39] } 16... Nxc4 { [%eval 0.01] [%clk 0:48:51] } 17. dxc4 { [%eval 0.06] [%clk 0:36:59] } 17... d5?? { [%eval 2.07] } { Blunder. Rfb8 was best. } { [%clk 0:38:52] } 18. exd5?! { [%eval 1.36] } { Inaccuracy. Na4 was best. } { [%clk 0:23:53] } 18... exd5 { [%eval 1.45] [%clk 0:38:59] } 19. Na4 { [%eval 1.43] [%clk 0:24:01] } 19... Rae8 { [%eval 1.28] [%clk 0:35:39] } 20. Bf3 { [%eval 1.04] [%clk 0:22:31] } 20... Be5 { [%eval 1.42] [%clk 0:34:41] } 21. Qh4 { [%eval 1.75] [%clk 0:20:32] } 21... Ne6 { [%eval 1.24] [%clk 0:26:05] } 22. Bh6 { [%eval 1.13] [%clk 0:11:47] } 22... Bg7?! { [%eval 1.95] } { Inaccuracy. Ng7 was best. } { [%clk 0:25:43] } 23. Bxg7 { [%eval 1.96] [%clk 0:11:46] } 23... Kxg7 { [%eval 1.9] [%clk 0:26:07] } 24. Bxd5? { [%eval 0.71] } { Mistake. cxd5 was best. } { [%clk 0:07:06] } 24... Bxd5 { [%eval 0.75] [%clk 0:26:11] } 25. Nb6 { [%eval 0.74] [%clk 0:07:25] } 25... Qd6 { [%eval 1.0] [%clk 0:24:47] } 26. Nxd5 { [%eval 1.01] [%clk 0:07:39] } 26... Nd4 { [%eval 0.86] [%clk 0:23:50] } 27. c3 { [%eval 0.93] [%clk 0:07:08] } 27... Nb3 { [%eval 1.08] [%clk 0:22:19] } 28. Rad1 { [%eval 1.37] [%clk 0:04:42] } 28... Re2 { [%eval 1.18] [%clk 0:21:21] } 29. Nf4 { [%eval 1.26] [%clk 0:04:15] } 29... Rd2 { [%eval 1.05] [%clk 0:20:35] } 30. Rxd2?! { [%eval 0.3] } { Inaccuracy. Rde1 was best. } { [%clk 0:02:53] } 30... Nxd2 { [%eval 0.4] [%clk 0:20:59] } 31. Re1 { [%eval 0.28] [%clk 0:02:31] } 31... Rb8 { [%eval 0.31] [%clk 0:21:13] } 32. Qg5 { [%eval 0.0] [%clk 0:01:05] } 32... Ne4 { [%eval 0.26] [%clk 0:15:35] } 33. Qh4 { [%eval -0.19] [%clk 0:00:47] } 33... Nf6 { [%eval -0.18] [%clk 0:13:11] } 34. h3 { [%eval -0.59] [%clk 0:00:34] } 34... Rxb2 { [%eval -0.73] [%clk 0:13:12] } 35. Qg5 { [%eval -0.9] [%clk 0:00:34] } 35... Qd2 { [%eval -0.55] [%clk 0:09:43] } 36. Qe5? { [%eval -2.14] } { Mistake. Rf1 was best. } { [%clk 0:01:00] } 36... Qxf2+ { [%eval -2.02] [%clk 0:09:11] } 37. Kh2 { [%eval -2.03] [%clk 0:01:29] } 37... Kh6?? { [%eval 0.0] } { Blunder. h5 was best. } { [%clk 0:08:52] } 38. Qxf6 { [%eval 0.0] [%clk 0:00:36] } 38... Qxe1 { [%eval 0.0] [%clk 0:09:16] } 39. Nd3 { [%eval 0.0] [%clk 0:00:46] } 39... Qd2 { [%eval 0.0] [%clk 0:08:37] } 40. Nxb2 { [%eval 0.0] [%clk 0:01:09] } 40... Qxb2 { [%eval 0.0] [%clk 0:09:05] } 41. Qxf7 { [%eval -0.09] [%clk 0:01:06] } 41... Qb8+ { [%eval -0.11] [%clk 0:08:29] } 42. Kh1 { [%eval -0.01] [%clk 0:01:21] } 42... Qd6 { [%eval 0.0] [%clk 0:07:54] } 43. Qf3 { [%eval -0.15] [%clk 0:00:58] } 43... a5 { [%eval -0.24] [%clk 0:05:27] } 44. Qa8 { [%eval -0.32] [%clk 0:01:06] } 44... Qc7 { [%eval -0.16] [%clk 0:05:49] } 45. Qe8 { [%eval -0.2] [%clk 0:00:45] } 45... Kg5 { [%eval -0.25] [%clk 0:06:03] } 46. Qb5 { [%eval -0.36] [%clk 0:00:57] } 46... Kf4 { [%eval -0.56] [%clk 0:06:18] } 47. Qe8 { [%eval -0.39] [%clk 0:00:55] } 47... Qe5 { [%eval -0.4] [%clk 0:04:56] } 48. Qa8? { [%eval -1.66] } { Mistake. Qc6 was best. } { [%clk 0:00:45] } 48... Ke3?? { [%eval 0.41] } { Blunder. Qxc3 was best. } { [%clk 0:04:44] } 49. Qf3+ { [%eval 0.38] [%clk 0:00:40] } 49... Kd2 { [%eval 0.4] [%clk 0:05:05] } 50. Qd5+ { [%eval 0.32] [%clk 0:01:02] } 50... Qxd5 { [%eval 0.39] [%clk 0:05:22] } 51. cxd5 { [%eval 0.61] [%clk 0:01:31] } 51... a4 { [%eval 0.48] [%clk 0:05:26] } 52. d6 { [%eval 0.41] [%clk 0:02:00] } 52... a3 { [%eval 0.47] [%clk 0:05:53] } 53. d7 { [%eval 0.36] [%clk 0:02:28] } 53... a2 { [%eval 0.42] [%clk 0:06:20] } 54. d8=Q+ { [%eval 0.46] [%clk 0:02:53] } 54... Kc2 { [%eval 0.41] [%clk 0:06:43] } 55. Qa5 { [%eval 0.39] [%clk 0:02:09] } 55... Kb2 { [%eval 0.45] [%clk 0:07:12] } 56. Qb5+ { [%eval 0.37] [%clk 0:02:33] } 56... Kc2 { [%eval 0.5] [%clk 0:07:25] } 57. Qe2+ { [%eval 0.42] [%clk 0:02:02] } 57... Kb1 { [%eval 0.46] [%clk 0:07:47] } 58. Qe1+ { [%eval 0.43] [%clk 0:01:14] } 58... Kb2 { [%eval 0.4] [%clk 0:08:12] } 59. Qf2+ { [%eval 0.45] [%clk 0:01:12] } 59... Kb3 { [%eval 0.42] [%clk 0:08:37] } 60. Qf1 { [%eval 0.36] [%clk 0:00:45] } 60... Kb2 { [%eval 0.4] [%clk 0:09:02] } 61. Qb5+ { [%eval 0.38] [%clk 0:00:50] } 61... Kc2 { [%eval 0.34] [%clk 0:09:22] } 62. Qa6 { [%eval 0.39] [%clk 0:01:07] } 62... Kb2 { [%eval 0.38] [%clk 0:09:31] } 63. Qb7+ { [%eval 0.35] [%clk 0:01:17] } 63... Kc2 { [%eval 0.44] [%clk 0:09:46] } 64. Qa7 { [%eval 0.4] [%clk 0:01:24] } 64... Kb2 { [%eval 0.43] [%clk 0:10:11] } 65. Qb8+ { [%eval 0.37] [%clk 0:01:10] } 65... Kc2 { [%eval 0.37] [%clk 0:10:31] } 66. Qa8 { [%eval 0.39] [%clk 0:01:13] } 66... Kb2 { [%eval 0.44] [%clk 0:10:56] } 67. Qb7+ { [%eval 0.32] [%clk 0:01:39] } 67... Kc2 { [%eval 0.39] [%clk 0:11:22] } 68. Qe4+ { [%eval 0.3] [%clk 0:02:06] } 68... Kb2 { [%eval 0.37] [%clk 0:11:19] } 69. Qe2+ { [%eval 0.43] [%clk 0:02:06] } 69... Kb1 { [%eval 0.39] [%clk 0:11:25] } 70. Qe1+ { [%eval 0.42] [%clk 0:00:41] } 70... Kb2 { [%eval 0.32] [%clk 0:11:53] } 71. Qf2+ { [%eval 0.37] [%clk 0:00:49] } 71... Kb3 { [%eval 0.39] [%clk 0:12:21] } 72. Qg1 { [%eval 0.4] [%clk 0:01:06] } 72... Kb2 { [%eval 0.34] [%clk 0:12:47] } 73. Qxc5 { [%eval 0.28] [%clk 0:01:27] } 73... a1=Q+ { [%eval 0.42] } 74. Kh2 { [%eval 0.36] [%clk 0:01:50] } 74... Qf1 { [%eval 0.38] [%clk 0:10:54] } 75. Qd4 { [%eval 0.37] [%clk 0:01:09] } 75... Kb3 { [%eval 0.35] [%clk 0:11:12] } 76. Qb4+ { [%eval 0.29] [%clk 0:00:33] } 76... Kc2 { [%eval 0.27] [%clk 0:11:40] } 77. Qd4 { [%eval 0.34] [%clk 0:00:37] } 77... Kb3 { [%eval 0.31] [%clk 0:11:15] } 78. Kg3 { [%eval 0.45] [%clk 0:00:59] } 78... Qe1+ { [%eval 0.33] [%clk 0:11:37] } 79. Kf4 { [%eval 0.16] [%clk 0:01:12] } 79... Qf1+ { [%eval 0.46] [%clk 0:12:02] } 80. Kg3 { [%eval 0.47] [%clk 0:01:12] } 80... Qe1+ { [%eval 0.34] [%clk 0:12:25] } 81. Kf4 { [%eval 0.06] [%clk 0:00:40] } 81... Qf1+ { [%eval 0.12] [%clk 0:12:50] } 82. Kg3 { [%eval 0.0] [%clk 0:00:53] } 82... Qe1+ { [%eval 0.36] } 83. Qf2 { [%eval 0.06] [%clk 0:00:53] } 83... Qxc3+?? { [%eval 7.9] } { Blunder. Qe7 was best. } 84. Qf3 { [%eval 6.56] } 84... h6 { [%eval 8.02] } 85. Kf4 { [%eval 8.69] } 1/2-1/2