Event: Round 5: Pein, Jonathan - Mason, Donald J
Date: 2025-02-15
White: Pein, Jonathan
WhiteTitle: FM
WhiteElo: 2272
Black: Mason, Donald J
BlackElo: 2011
Result: 1/2-1/2
ECO: A05
Opening: King's Indian Attack: Symmetrical Defense
Variant: Standard

1. Nf3 { [%eval 0.14] [%clk 1:30:56] } 1... Nf6 { [%eval 0.18] [%clk 1:29:48] } 2. g3 { [%eval 0.11] [%clk 1:31:22] } 2... g6 { [%eval 0.17] [%clk 1:29:51] } 3. b3 { [%eval 0.0] [%clk 1:31:44] } 3... Bg7 { [%eval 0.13] [%clk 1:23:58] } 4. Bb2 { [%eval 0.09] [%clk 1:32:07] } 4... O-O { [%eval 0.21] [%clk 1:23:57] } 5. Bg2 { [%eval 0.12] [%clk 1:32:20] } 5... c5 { [%eval 0.17] [%clk 1:24:18] } 6. O-O { [%eval -0.15] [%clk 1:30:13] } 6... d6 { [%eval 0.21] [%clk 1:21:36] } 7. c4 { [%eval 0.24] [%clk 1:30:24] } 7... e5 { [%eval 0.22] [%clk 1:21:13] } 8. Nc3 { [%eval 0.19] [%clk 1:30:21] } 8... Nc6 { [%eval 0.21] [%clk 1:20:54] } 9. Ne1 { [%eval -0.03] [%clk 1:28:23] } 9... Ne8 { [%eval 0.28] [%clk 1:10:30] } 10. Nc2 { [%eval 0.13] [%clk 1:25:38] } 10... f5 { [%eval 0.16] [%clk 1:03:45] } 11. Ne3 { [%eval 0.19] [%clk 1:25:38] } 11... f4 { [%eval 0.25] [%clk 0:58:19] } 12. Ned5 { [%eval 0.26] [%clk 1:26:04] } 12... Nc7 { [%eval 0.26] [%clk 0:51:57] } 13. a3 { [%eval 0.03] [%clk 1:23:44] } 13... Ne6 { [%eval 0.34] [%clk 0:38:20] } 14. b4 { [%eval 0.39] [%clk 1:23:24] } 14... Ng5 { [%eval 0.38] [%clk 0:35:37] } 15. Ne4 { [%eval 0.23] [%clk 1:11:26] } 15... Nxe4 { [%eval 0.21] [%clk 0:26:29] } 16. Bxe4 { [%eval 0.22] [%clk 1:11:53] } 16... Bh3 { [%eval 0.12] [%clk 0:26:49] } 17. Bg2 { [%eval -0.1] [%clk 0:51:55] } 17... Bxg2 { [%eval 0.0] [%clk 0:23:29] } 18. Kxg2 { [%eval 0.01] [%clk 0:52:22] } 18... e4 { [%eval 0.0] [%clk 0:23:15] } 19. Bxg7 { [%eval 0.0] [%clk 0:40:53] } 19... f3+ { [%eval 0.0] [%clk 0:23:38] } 20. Kh1 { [%eval 0.0] [%clk 0:41:21] } 20... Kxg7 { [%eval 0.0] [%clk 0:23:28] } 21. d3 { [%eval 0.0] [%clk 0:40:56] } 21... Nd4 { [%eval 0.54] [%clk 0:17:46] } 22. e3 { [%eval 0.73] [%clk 0:36:02] } 22... Ne2 { [%eval 0.46] [%clk 0:17:52] } 23. Nf4 { [%eval 0.58] [%clk 0:26:37] } 23... Rxf4? { [%eval 1.73] } { Mistake. Qc8 was best. } { [%clk 0:04:41] } 24. exf4 { [%eval 1.78] [%clk 0:26:57] } 24... Qd7 { [%eval 1.6] [%clk 0:04:26] } 25. dxe4? { [%eval 0.24] } { Mistake. Qd2 was best. } { [%clk 0:25:52] } 25... Qh3 { [%eval 0.61] [%clk 0:03:30] } 26. Rg1 { [%eval 0.56] [%clk 0:26:19] } 26... Re8?? { [%eval 3.31] } { Blunder. Nxg1 was best. } { [%clk 0:03:24] } 27. Qd3?! { [%eval 2.42] } { Inaccuracy. Qxd6 was best. } { [%clk 0:21:31] } 27... Nd4?! { [%eval 3.17] } { Inaccuracy. Nxg1 was best. } { [%clk 0:02:16] } 28. Rad1 { [%eval 2.98] [%clk 0:20:09] } 28... Re6?! { [%eval 4.2] } { Inaccuracy. b6 was best. } { [%clk 0:02:20] } 29. Qe3 { [%eval 4.17] [%clk 0:18:56] } 29... g5 { [%eval 4.2] [%clk 0:02:24] } 30. fxg5 { [%eval 4.76] [%clk 0:18:01] } 30... Qg4 { [%eval 4.21] [%clk 0:01:03] } 31. Rxd4 { [%eval 4.44] [%clk 0:16:01] } 31... cxd4 { [%eval 4.25] [%clk 0:01:30] } 32. Qxd4+ { [%eval 4.2] [%clk 0:16:25] } 32... Kg8 { [%eval 3.93] [%clk 0:00:51] } 33. Qd5 { [%eval 3.88] [%clk 0:04:43] } 33... Qxe4 { [%eval 3.65] [%clk 0:00:59] } 34. Qxe4 { [%eval 3.72] [%clk 0:04:06] } 34... Rxe4 { [%eval 3.62] [%clk 0:01:27] } 35. Rc1 { [%eval 3.51] [%clk 0:02:10] } 35... Re2 { [%eval 3.38] [%clk 0:01:50] } 36. h3?? { [%eval 0.13] } { Blunder. Kg1 was best. } { [%clk 0:00:49] } 36... Rxf2 { [%eval 0.2] [%clk 0:02:13] } 37. Rc3 { [%eval 0.12] [%clk 0:00:45] } 37... Rf1+? { [%eval 1.33] } { Mistake. Kf7 was best. } { [%clk 0:01:40] } 38. Kh2 { [%eval 2.13] [%clk 0:01:08] } 38... Rf2+ { [%eval 1.96] [%clk 0:01:30] } 39. Kg1 { [%eval 1.84] [%clk 0:00:41] } 39... Rg2+ { [%eval 1.78] [%clk 0:01:53] } 40. Kf1 { [%eval 1.43] [%clk 0:00:59] } 40... Rxg3 { [%eval 1.54] [%clk 0:02:07] } 41. Rd3 { [%eval 1.61] [%clk 0:01:02] } 41... b5?? { [%eval 3.84] } { Blunder. a5 was best. } { [%clk 0:19:36] } 42. cxb5 { [%eval 3.73] [%clk 0:29:50] } 42... Rxg5 { [%eval 3.5] [%clk 0:16:13] } 43. Rxd6?! { [%eval 2.67] } { Inaccuracy. a4 was best. } { [%clk 0:25:21] } 43... Rxb5 { [%eval 2.67] [%clk 0:16:23] } 44. Rd8+ { [%eval 2.72] [%clk 0:25:23] } 44... Kf7 { [%eval 2.55] [%clk 0:16:46] } 45. Rd7+ { [%eval 2.49] [%clk 0:25:50] } 45... Ke6 { [%eval 2.52] [%clk 0:14:36] } 46. Rxa7?? { [%eval 0.0] } { Blunder. Rxh7 was best. } { [%clk 0:25:42] } 46... Rh5 { [%eval 0.0] [%clk 0:14:53] } 47. a4 { [%eval 0.0] [%clk 0:15:09] } 47... Kd6 { [%eval 0.0] [%clk 0:13:07] } 48. b5 { [%eval 0.0] [%clk 0:13:51] } 48... Kc5 { [%eval 0.12] [%clk 0:10:20] } 49. Ra6 { [%eval 0.0] [%clk 0:09:26] } 49... Rxh3 { [%eval 0.0] [%clk 0:10:19] } 50. Rc6+ { [%eval 0.0] [%clk 0:08:15] } 50... Kb4 { [%eval 0.0] [%clk 0:08:25] } 51. b6 { [%eval 0.0] [%clk 0:07:17] } 51... Ka5 { [%eval 0.0] [%clk 0:07:32] } 52. b7 { [%eval 0.0] [%clk 0:02:37] } 52... Rh1+ { [%eval 0.0] [%clk 0:07:34] } 53. Kf2 { [%eval 0.0] [%clk 0:03:03] } 53... Rb1 { [%eval 0.0] [%clk 0:07:40] } 54. Rc7 { [%eval 0.0] [%clk 0:03:07] } 54... Ka6 { [%eval 0.0] [%clk 0:07:42] } 55. Rxh7 { [%eval 0.0] [%clk 0:03:04] } 1/2-1/2