Event: Las Vegas National Open 2023
Date: 2023-06-18
White: Alexander Costello
WhiteTitle: IM
Black: Zoey Tang
BlackTitle: WIM
Result: 1-0
ECO: B54
Opening: Sicilian Defense: Modern Variations, Main Line
Variant: Standard
TimeControl: G/90 +30 sec inc

1. e4 { [%eval 0.36] [%clk 1:26:41] } 1... c5 { [%eval 0.32] [%clk 1:30:57] } 2. Nf3 { [%eval 0.0] [%clk 1:27:06] } 2... d6 { [%eval 0.0] [%clk 1:31:23] } 3. d4 { [%eval 0.25] [%clk 1:27:30] } 3... cxd4 { [%eval 0.13] [%clk 1:31:50] } 4. Nxd4 { [%eval 0.27] [%clk 1:27:56] } 4... Nf6 { [%eval 0.3] [%clk 1:32:13] } 5. Bd3 { [%eval 0.1] [%clk 1:28:23] } 5... Nc6 { [%eval 0.09] [%clk 1:28:27] } 6. Nxc6 { [%eval -0.01] [%clk 1:28:31] } 6... bxc6 { [%eval 0.0] [%clk 1:28:53] } 7. O-O { [%eval 0.09] [%clk 1:28:56] } 7... e6 { [%eval 0.58] [%clk 1:24:03] } 8. f4?! { [%eval 0.0] } { Inaccuracy. c4 was best. } { [%clk 1:13:43] } 8... Bb7 { [%eval 0.44] [%clk 1:14:36] } 9. Qe2 { [%eval 0.54] [%clk 1:08:30] } 9... Qc7 { [%eval 0.49] [%clk 1:09:51] } 10. Nd2 { [%eval 0.59] [%clk 1:05:34] } 10... Be7?! { [%eval 1.19] } { Inaccuracy. d5 was best. } { [%clk 1:05:14] } 11. e5 { [%eval 0.72] [%clk 1:05:31] } 11... dxe5 { [%eval 0.81] [%clk 1:01:37] } 12. fxe5 { [%eval 0.8] [%clk 1:05:56] } 12... Nd7 { [%eval 0.82] [%clk 1:02:00] } 13. Nc4 { [%eval 0.81] [%clk 0:58:02] } 13... Nc5?! { [%eval 1.7] } { Inaccuracy. Ba6 was best. } { [%clk 0:54:51] } 14. Qg4 { [%eval 1.65] [%clk 0:54:43] } 14... Nxd3 { [%eval 1.79] [%clk 0:49:46] } 15. cxd3 { [%eval 1.46] [%clk 0:54:41] } 15... O-O-O?! { [%eval 2.36] } { Inaccuracy. c5 was best. } { [%clk 0:48:15] } 16. Be3 { [%eval 2.47] [%clk 0:52:19] } 16... h5 { [%eval 2.45] [%clk 0:45:15] } 17. Qe2 { [%eval 2.14] [%clk 0:44:55] } 17... Ba6 { [%eval 1.68] [%clk 0:42:48] } 18. Rxf7 { [%eval 1.99] [%clk 0:44:37] } 18... Bxc4 { [%eval 1.82] [%clk 0:40:39] } 19. dxc4 { [%eval 1.89] [%clk 0:45:05] } 19... Rd7 { [%eval 2.26] [%clk 0:41:01] } 20. Bf2?! { [%eval 1.62] } { Inaccuracy. Kh1 was best. } { [%clk 0:42:30] } 20... g5 { [%eval 1.8] [%clk 0:39:21] } 21. Kh1 { [%eval 2.08] [%clk 0:37:30] } 21... g4 { [%eval 1.85] [%clk 0:38:28] } 22. Re1?! { [%eval 1.14] } { Inaccuracy. Rf1 was best. } { [%clk 0:34:05] } 22... Rhd8 { [%eval 1.09] [%clk 0:34:27] } 23. Qe4 { [%eval 1.09] [%clk 0:18:38] } 23... Kb8?! { [%eval 1.69] } { Inaccuracy. Bb4 was best. } { [%clk 0:30:58] } 24. Bg3?? { [%eval 0.0] } { Blunder. b4 was best. } { [%clk 0:15:46] } 24... Rd1 { [%eval 0.42] [%clk 0:26:22] } 25. Rff1 { [%eval 0.35] [%clk 0:16:14] } 25... R1d2?? { [%eval 2.42] } { Blunder. Rxe1 was best. } { [%clk 0:24:22] } 26. Qg6 { [%eval 2.36] [%clk 0:15:40] } 26... Qb7 { [%eval 2.73] [%clk 0:15:39] } 27. c5?? { [%eval 0.0] } { Blunder. Qxh5 was best. } { [%clk 0:15:40] } 27... Qd7 { [%eval 0.0] [%clk 0:13:04] } 28. Bf4 { [%eval 0.0] [%clk 0:15:13] } 28... Rxb2? { [%eval 1.68] } { Mistake. Rd1 was best. } { [%clk 0:12:36] } 29. Bc1 { [%eval 1.37] [%clk 0:15:42] } 29... Rb7 { [%eval 1.38] [%clk 0:10:38] } 30. Qxh5 { [%eval 1.53] [%clk 0:15:53] } 30... g3 { [%eval 1.41] [%clk 0:06:38] } 31. Rd1 { [%eval 1.38] [%clk 0:16:01] } 31... Qc8 { [%eval 1.56] [%clk 0:06:55] } 32. Rxd8 { [%eval 1.21] [%clk 0:09:20] } 32... Qxd8 { [%eval 1.41] [%clk 0:07:19] } 33. Rd1 { [%eval 1.12] [%clk 0:09:47] } 33... Qg8 { [%eval 1.7] [%clk 0:03:57] } 34. Qf3?! { [%eval 0.61] } { Inaccuracy. h3 was best. } { [%clk 0:05:55] } 34... Rc7?! { [%eval 1.75] } { Inaccuracy. Qg6 was best. } { [%clk 0:02:29] } 35. Be3 { [%eval 1.37] [%clk 0:04:09] } 35... gxh2 { [%eval 1.26] [%clk 0:02:37] } 36. Qe4 { [%eval 1.26] [%clk 0:04:14] } 36... Ka8 { [%eval 1.79] [%clk 0:01:49] } 37. Rf1 { [%eval 1.27] [%clk 0:01:35] } 37... Rc8 { [%eval 1.16] [%clk 0:01:16] } 38. Qd3 { [%eval 1.01] [%clk 0:01:35] } 38... Rc7?! { [%eval 2.03] } { Inaccuracy. Rd8 was best. } { [%clk 0:01:15] } 39. Bd2? { [%eval 0.83] } { Mistake. a4 was best. } { [%clk 0:00:59] } 39... Bxc5?! { [%eval 1.86] } { Inaccuracy. Qg4 was best. } { [%clk 0:01:09] } 40. Ba5?! { [%eval 0.86] } { Inaccuracy. Qc4 was best. } { [%clk 0:01:28] } 40... Rb7? { [%eval 2.32] } { Mistake. Rf7 was best. } { [%clk 0:01:17] } 41. Qc4?? { [%eval 0.42] } { Blunder. Qc3 was best. } { [%clk 0:01:11] } 41... Rb2 { [%eval 0.48] [%clk 0:01:30] } 42. Qe4 { [%eval 0.58] [%clk 0:01:21] } 42... Kb7 { [%eval 0.45] [%clk 0:01:44] } 43. Bc3 { [%eval 0.0] [%clk 0:01:34] } 43... Rf2 { [%eval 0.0] [%clk 0:01:08] } 44. Rb1+ { [%eval 0.0] [%clk 0:01:07] } 44... Kc7? { [%eval 1.17] } { Mistake. Bb6 was best. } { [%clk 0:01:33] } 45. Ba5+ { [%eval 0.65] [%clk 0:00:43] } 45... Bb6 { [%eval 0.69] [%clk 0:01:57] } 46. Bb4?! { [%eval -0.12] } { Inaccuracy. Rc1 was best. } { [%clk 0:00:42] } 46... Qg5 { [%eval 0.0] [%clk 0:01:20] } 47. Bd6+ { [%eval 0.0] [%clk 0:00:58] } 47... Kb7 { [%eval 0.0] [%clk 0:01:00] } 48. a4 { [%eval 0.0] [%clk 0:00:58] } 48... Rb2?? { [%eval 2.83] } { Blunder. Qd2 was best. } { [%clk 0:00:47] } 49. a5 { [%eval 2.63] [%clk 0:00:38] } 49... Qe3?? { [%eval 13.45] } { Blunder. Rxb1+ was best. } { [%clk 0:00:47] } 50. Qh7+?? { [%eval 3.1] } { Blunder. a6+ was best. } { [%clk 0:00:46] } 50... Ka6 { [%eval 3.11] [%clk 0:00:46] } 51. axb6 { [%eval 3.05] [%clk 0:00:35] } 51... Rxb1+ { [%eval 3.08] [%clk 0:01:01] } 52. Qxb1 { [%eval 3.05] [%clk 0:01:03] } 52... axb6 { [%eval 3.05] [%clk 0:01:25] } 53. Kxh2 { [%eval 3.13] [%clk 0:01:21] } 53... Qh6+ { [%eval 3.19] [%clk 0:01:39] } 54. Kg3 { [%eval 3.24] [%clk 0:01:37] } 54... Qe3+ { [%eval 3.95] [%clk 0:01:36] } 55. Kh4 { [%eval 3.69] [%clk 0:01:31] } 55... Qf4+ { [%eval 4.51] [%clk 0:01:30] } 56. Kh5 { [%eval 4.55] [%clk 0:01:26] } 56... Qh2+ { [%eval 4.7] [%clk 0:01:29] } 57. Kg6 { [%eval 4.48] [%clk 0:01:40] } 57... Qxg2+ { [%eval 4.78] [%clk 0:01:34] } 58. Kf7 { [%eval 4.86] [%clk 0:02:09] } 58... Qd5 { [%eval 4.76] [%clk 0:01:18] } 59. Qg6 { [%eval 5.48] [%clk 0:02:28] } 59... b5 { [%eval 5.66] [%clk 0:01:16] } 60. Qxe6 { [%eval 6.37] [%clk 0:02:31] } 60... Qf3+ { [%eval 7.76] [%clk 0:01:41] } 61. Ke7 { [%eval 8.18] [%clk 0:02:46] } 61... Qg2 { [%eval 8.66] [%clk 0:01:24] } 62. Kd8 { [%eval 8.14] [%clk 0:01:52] } 62... Kb6 { [%eval 8.8] [%clk 0:01:19] } 63. Qf7 { [%eval 8.63] [%clk 0:01:52] } 63... Qg5+ { [%eval 14.29] [%clk 0:01:31] } 64. Kc8 { [%eval 17.19] [%clk 0:02:01] } 64... Qg4+ { [%eval 13.8] [%clk 0:01:34] } 65. Kb8 { [%eval #42] [%clk 0:01:47] } 65... b4 { [%eval #25] [%clk 0:01:36] } 66. Qb7+? { [%eval 9.27] } { Lost forced checkmate sequence. e6 was best. } { [%clk 0:01:09] } 66... Ka5 { [%eval #19] [%clk 0:02:02] } 67. Qxb4+?! { [%eval 12.13] } { Lost forced checkmate sequence. Qxc6 was best. } { [%clk 0:01:04] } 67... Qxb4+ { [%eval 8.12] [%clk 0:02:26] } 68. Bxb4+ { [%eval 14.0] [%clk 0:01:32] } 68... Kxb4 { [%eval #39] [%clk 0:02:50] } 69. e6 { [%eval #37] [%clk 0:02:01] } 1-0