Event: Round 4: Tso, Chi Wai - Jackson, Oliver A
Date: 2025-02-23
White: Tso, Chi Wai
Black: Jackson, Oliver A
BlackTitle: FM
BlackElo: 2027
Result: 1/2-1/2
ECO: A57
Opening: Benko Gambit Accepted: Modern Variation
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:56] } 1... Nf6 { [%eval 0.19] [%clk 1:30:55] } 2. c4 { [%eval 0.18] [%clk 1:31:21] } 2... c5 { [%eval 0.56] [%clk 1:31:19] } 3. d5 { [%eval 0.47] [%clk 1:31:45] } 3... b5 { [%eval 0.53] [%clk 1:31:43] } 4. cxb5 { [%eval 0.47] [%clk 1:18:27] } 4... a6 { [%eval 0.6] [%clk 1:31:31] } 5. e3 { [%eval 0.42] [%clk 1:16:50] } 5... g6 { [%eval 0.71] [%clk 1:31:09] } 6. Nc3 { [%eval 0.65] [%clk 1:15:39] } 6... Bg7 { [%eval 0.72] [%clk 1:31:30] } 7. d6?! { [%eval 0.0] } { Inaccuracy. e4 was best. } { [%clk 1:10:27] } 7... Bb7 { [%eval 0.23] [%clk 1:26:52] } 8. Nf3 { [%eval -0.15] [%clk 1:06:17] } 8... O-O { [%eval -0.03] [%clk 1:26:52] } 9. Be2 { [%eval -0.04] [%clk 1:03:06] } 9... exd6 { [%eval 0.0] [%clk 1:07:24] } 10. Qxd6 { [%eval 0.0] [%clk 1:00:12] } 10... Qc8?! { [%eval 0.56] } { Inaccuracy. axb5 was best. } { [%clk 1:07:43] } 11. O-O { [%eval 0.41] [%clk 0:59:50] } 11... axb5 { [%eval 0.47] [%clk 1:07:47] } 12. Nxb5 { [%eval 0.09] [%clk 0:59:35] } 12... Na6 { [%eval 0.27] [%clk 0:56:05] } 13. Rd1 { [%eval 0.29] [%clk 0:51:39] } 13... Bc6 { [%eval 0.47] [%clk 0:49:47] } 14. Nc3 { [%eval 0.48] [%clk 0:46:54] } 14... Qb7 { [%eval 0.4] [%clk 0:46:51] } 15. e4 { [%eval -0.04] [%clk 0:40:50] } 15... Rfe8 { [%eval 0.17] [%clk 0:42:28] } 16. Bc4 { [%eval -0.04] [%clk 0:30:55] } 16... Nxe4 { [%eval -0.09] [%clk 0:38:04] } 17. Nxe4 { [%eval -0.08] [%clk 0:31:12] } 17... Rxe4 { [%eval -0.09] [%clk 0:38:26] } 18. Bd5 { [%eval -0.11] [%clk 0:31:31] } 18... Bxd5 { [%eval -0.06] [%clk 0:27:48] } 19. Qxd5 { [%eval -0.06] [%clk 0:31:35] } 19... Qxd5 { [%eval -0.1] [%clk 0:25:04] } 20. Rxd5 { [%eval -0.15] [%clk 0:32:00] } 20... Rae8 { [%eval 0.0] [%clk 0:24:15] } 21. Be3 { [%eval -0.12] [%clk 0:32:05] } 21... c4 { [%eval 0.1] [%clk 0:20:56] } 22. Nd2 { [%eval 0.08] [%clk 0:15:34] } 22... Bxb2 { [%eval 0.1] [%clk 0:20:53] } 23. Rb1 { [%eval 0.0] [%clk 0:15:57] } 23... Rxe3 { [%eval 0.0] [%clk 0:20:19] } 24. fxe3 { [%eval 0.0] [%clk 0:13:52] } 24... c3 { [%eval 0.0] [%clk 0:20:29] } 25. Nb3 { [%eval -0.04] [%clk 0:08:59] } 25... Re7 { [%eval 0.08] [%clk 0:14:44] } 26. Kf2 { [%eval 0.0] [%clk 0:08:52] } 26... Nb4 { [%eval 0.0] [%clk 0:14:45] } 27. Rd4 { [%eval -0.01] [%clk 0:08:08] } 27... Nc6?! { [%eval 0.66] } { Inaccuracy. Ba3 was best. } { [%clk 0:13:31] } 28. Rc4 { [%eval 0.26] [%clk 0:07:55] } 28... Ne5 { [%eval 0.22] [%clk 0:13:30] } 29. Rc8+ { [%eval 0.25] [%clk 0:07:53] } 29... Kg7 { [%eval 0.24] [%clk 0:13:59] } 30. Nc1?? { [%eval -2.96] } { Blunder. h3 was best. } { [%clk 0:07:48] } 30... Bxc1 { [%eval -2.93] [%clk 0:14:09] } 31. Rxc3 { [%eval -2.79] [%clk 0:07:45] } 31... Bd2 { [%eval -2.83] [%clk 0:13:47] } 32. Rcb3?! { [%eval -4.19] } { Inaccuracy. Rc2 was best. } { [%clk 0:08:02] } 32... Ng4+? { [%eval -2.41] } { Mistake. Nc4 was best. } { [%clk 0:13:14] } 33. Kf3? { [%eval -3.95] } { Mistake. Ke2 was best. } { [%clk 0:07:53] } 33... f5? { [%eval -2.08] } { Mistake. Nxe3 was best. } { [%clk 0:11:22] } 34. h3? { [%eval -3.93] } { Mistake. Rd1 was best. } { [%clk 0:07:46] } 34... Nf6?? { [%eval -0.68] } { Blunder. Nxe3 was best. } { [%clk 0:11:07] } 35. Rd1?! { [%eval -1.36] } { Inaccuracy. Rd3 was best. } { [%clk 0:08:06] } 35... Ba5 { [%eval -1.27] [%clk 0:10:20] } 36. Rb5 { [%eval -0.93] [%clk 0:07:27] } 36... Bc7 { [%eval -0.91] [%clk 0:09:57] } 37. a4 { [%eval -0.94] [%clk 0:07:35] } 37... Ne4 { [%eval -0.5] [%clk 0:09:10] } 38. Rd3?? { [%eval -2.46] } { Blunder. Rb7 was best. } { [%clk 0:07:41] } 38... Ng5+?? { [%eval -0.51] } { Blunder. Be5 was best. } { [%clk 0:07:24] } 39. Kf2?? { [%eval -2.59] } { Blunder. Ke2 was best. } { [%clk 0:07:21] } 39... Ne4+ { [%eval -2.26] [%clk 0:07:23] } 40. Kf3 { [%eval -2.25] [%clk 0:07:28] } 40... Ng5+?? { [%eval -0.5] } { Blunder. Be5 was best. } { [%clk 0:04:22] } 41. Kf2?? { [%eval -2.35] } { Blunder. Ke2 was best. } { [%clk 0:07:39] } 41... Ne4+?? { [%eval 0.0] } { Blunder. Be5 was best. } { [%clk 0:04:22] } 42. Kf3 { [%eval -2.62] [%clk 0:08:04] } 42... Ng5+?? { [%eval 0.0] } { Blunder. Be5 was best. } { [%clk 0:04:49] } 43. Kf2 { [%eval -2.48] [%clk 0:08:28] } 1/2-1/2