Event: Las Vegas National Open 2023
Date: 2023-06-17
White: Alexander Costello
WhiteTitle: IM
Black: Mark Heimann
BlackTitle: IM
Result: 1/2-1/2
ECO: A06
Opening: Zukertort Opening
Variant: Standard
TimeControl: G/90 +30 sec inc

1. Nf3 { [%eval 0.36] [%clk 1:29:21] } 1... d5 { [%eval 0.34] [%clk 1:30:30] } 2. e3 { [%eval 0.04] [%clk 1:29:38] } 2... Nf6 { [%eval 0.05] [%clk 1:25:53] } 3. c4 { [%eval 0.18] [%clk 1:29:54] } 3... e6 { [%eval 0.07] [%clk 1:25:41] } 4. b3 { [%eval 0.13] [%clk 1:27:00] } 4... Bd6 { [%eval 0.21] [%clk 1:23:03] } 5. Bb2 { [%eval 0.12] [%clk 1:23:53] } 5... O-O { [%eval 0.09] [%clk 1:22:35] } 6. d4 { [%eval 0.13] [%clk 1:24:13] } 6... b6 { [%eval 0.09] [%clk 1:21:37] } 7. Nbd2 { [%eval 0.0] [%clk 1:19:47] } 7... Bb7 { [%eval 0.14] [%clk 1:21:41] } 8. Bd3 { [%eval 0.1] [%clk 1:20:05] } 8... Ne4 { [%eval 0.14] } 9. O-O { [%eval -0.02] [%clk 1:19:37] } 9... Nd7 { [%eval 0.08] [%clk 1:15:00] } 10. cxd5 { [%eval -0.14] [%clk 0:39:32] } 10... exd5 { [%eval -0.08] [%clk 1:14:37] } 11. Ne5 { [%eval -0.16] [%clk 0:40:01] } 11... Qe7 { [%eval -0.25] [%clk 0:53:58] } 12. f4 { [%eval -0.22] [%clk 0:30:23] } 12... Nxd2 { [%eval -0.13] [%clk 0:51:42] } 13. Qxd2 { [%eval -0.13] [%clk 0:30:49] } 13... f6?! { [%eval 0.43] } { Inaccuracy. Nf6 was best. } { [%clk 0:51:47] } 14. Nf3 { [%eval 0.25] [%clk 0:31:11] } 14... Rfe8 { [%eval 0.39] [%clk 0:43:21] } 15. Kf2?! { [%eval -0.24] } { Inaccuracy. Rae1 was best. } { [%clk 0:31:31] } 15... Nf8 { [%eval -0.13] [%clk 0:39:33] } 16. g4 { [%eval -0.39] [%clk 0:30:37] } 16... c5?! { [%eval 0.31] } { Inaccuracy. a5 was best. } { [%clk 0:32:25] } 17. Rac1 { [%eval 0.29] [%clk 0:28:05] } 17... Ne6 { [%eval 0.38] [%clk 0:26:29] } 18. h4 { [%eval 0.27] [%clk 0:27:55] } 18... cxd4 { [%eval 0.28] [%clk 0:24:43] } 19. Nxd4 { [%eval 0.28] [%clk 0:27:06] } 19... Nc5 { [%eval 0.18] [%clk 0:23:18] } 20. g5?! { [%eval -0.83] } { Inaccuracy. Nf5 was best. } { [%clk 0:21:43] } 20... Ba6 { [%eval -0.58] [%clk 0:14:30] } 21. Rxc5 { [%eval -0.47] [%clk 0:13:34] } 21... Bxd3 { [%eval -0.46] [%clk 0:14:57] } 22. Qxd3?! { [%eval -1.54] } { Inaccuracy. Rxd5 was best. } { [%clk 0:13:54] } 22... Bxc5 { [%eval -1.75] [%clk 0:14:49] } 23. Rg1 { [%eval -1.59] [%clk 0:14:23] } 23... g6? { [%eval -0.21] } { Mistake. Rac8 was best. } { [%clk 0:06:52] } 24. h5 { [%eval -0.21] [%clk 0:10:59] } 24... Kf7 { [%eval -0.03] [%clk 0:06:28] } 25. b4 { [%eval 0.0] [%clk 0:09:02] } 25... Bxd4 { [%eval -0.06] [%clk 0:04:46] } 26. Qxd4 { [%eval 0.0] [%clk 0:08:07] } 26... Rac8 { [%eval 0.0] [%clk 0:04:35] } 27. Qxd5+ { [%eval 0.0] [%clk 0:07:53] } 27... Qe6 { [%eval 0.1] [%clk 0:03:44] } 28. Qxe6+ { [%eval 0.12] [%clk 0:08:16] } 28... Kxe6 { [%eval 0.34] [%clk 0:04:05] } 29. Bxf6 { [%eval 0.19] [%clk 0:08:39] } 29... gxh5 { [%eval 0.16] [%clk 0:03:19] } 30. Kf3 { [%eval 0.08] [%clk 0:07:37] } 30... Rc2? { [%eval 1.32] } { Mistake. h6 was best. } { [%clk 0:02:27] } 31. e4 { [%eval 1.37] [%clk 0:07:24] } 31... Kf7 { [%eval 1.32] [%clk 0:01:46] } 32. f5 { [%eval 1.52] [%clk 0:03:14] } 32... h4?? { [%eval 4.0] } { Blunder. Rec8 was best. } { [%clk 0:01:54] } 33. Rh1?? { [%eval 0.19] } { Blunder. Rd1 was best. } { [%clk 0:02:34] } 33... h6 { [%eval 0.35] [%clk 0:01:59] } 34. Rxh4 { [%eval 0.2] [%clk 0:02:24] } 34... hxg5 { [%eval 0.24] [%clk 0:02:27] } 35. Bxg5 { [%eval 0.22] [%clk 0:02:52] } 35... Rxa2?! { [%eval 0.83] } { Inaccuracy. Rc3+ was best. } { [%clk 0:02:53] } 36. Rh7+ { [%eval 0.72] [%clk 0:02:27] } 36... Kg8 { [%eval 0.4] [%clk 0:03:20] } 37. Rd7 { [%eval 0.27] [%clk 0:02:31] } 37... Ra1?? { [%eval 2.81] } { Blunder. Ra3+ was best. } { [%clk 0:03:45] } 38. f6 { [%eval 2.43] [%clk 0:01:53] } 38... Re6 { [%eval 2.67] [%clk 0:02:34] } 39. e5?? { [%eval 0.0] } { Blunder. Kg4 was best. } { [%clk 0:01:32] } 39... Rf1+ { [%eval 0.0] [%clk 0:02:58] } 40. Ke4 { [%eval 0.0] [%clk 0:02:00] } 40... a5?? { [%eval 5.33] } { Blunder. Re1+ was best. } { [%clk 0:01:41] } 41. bxa5?? { [%eval 0.0] } { Blunder. Bf4 was best. } { [%clk 0:02:11] } 41... bxa5?? { [%eval 4.96] } { Blunder. Re1+ was best. } { [%clk 0:02:10] } 42. Ra7?? { [%eval 0.0] } { Blunder. Bf4 was best. } { [%clk 0:01:55] } 42... Re1+ { [%eval 0.0] [%clk 0:02:05] } 43. Kf5 { [%eval 0.0] [%clk 0:02:20] } 43... R1xe5+ { [%eval 0.0] [%clk 0:02:06] } 44. Kg6 { [%eval 0.0] [%clk 0:02:49] } 44... Rxg5+ { [%eval 0.0] [%clk 0:01:30] } 45. Kxg5 { [%eval 0.0] [%clk 0:03:17] } 45... Re1 { [%eval 0.0] [%clk 0:01:52] } 1/2-1/2