Event: 2025 Sydney International Open
White: Chen, Meng Boon Marcus
WhiteElo: 2188
Black: Antonio, Rogelio Jr
BlackTitle: GM
BlackElo: 2363
Result: 1/2-1/2
ECO: A36
Opening: English Opening: Symmetrical Variation, Ultra-Symmetrical Variation
Variant: Standard
TimeControl: 90+30

1. c4 { [%eval 0.12] [%clk 1:30:55] } 1... c5 { [%eval 0.19] [%clk 1:29:26] } 2. Nc3 { [%eval 0.19] [%clk 1:31:00] } 2... Nc6 { [%eval 0.25] [%clk 1:29:49] } 3. g3 { [%eval 0.12] [%clk 1:28:21] } 3... g6 { [%eval 0.09] [%clk 1:29:55] } 4. Bg2 { [%eval 0.11] [%clk 1:28:37] } 4... Bg7 { [%eval 0.14] [%clk 1:30:17] } 5. b3 { [%eval 0.0] [%clk 1:26:56] } 5... a6 { [%eval 0.11] [%clk 1:27:35] } 6. Bb2 { [%eval 0.13] [%clk 1:25:30] } 6... d6 { [%eval 0.21] [%clk 1:25:45] } 7. e3 { [%eval 0.36] [%clk 1:14:02] } 7... Bf5 { [%eval 0.39] [%clk 1:22:56] } 8. d3 { [%eval 0.41] [%clk 1:11:58] } 8... Qa5 { [%eval 0.68] [%clk 1:17:25] } 9. Qd2 { [%eval 0.61] [%clk 1:03:23] } 9... Ne5 { [%eval 0.68] [%clk 1:16:33] } 10. e4 { [%eval 0.51] [%clk 1:02:36] } 10... Bd7 { [%eval 0.59] [%clk 1:15:09] } 11. f4 { [%eval 0.53] [%clk 0:50:37] } 11... Nc6 { [%eval 0.59] [%clk 1:14:34] } 12. Nf3 { [%eval 0.63] [%clk 0:49:30] } 12... h5 { [%eval 0.83] [%clk 1:14:38] } 13. Nd5 { [%eval 0.36] [%clk 0:31:52] } 13... Qxd2+ { [%eval 0.35] [%clk 1:14:21] } 14. Nxd2 { [%eval -0.16] [%clk 0:31:50] } 14... Bxb2 { [%eval -0.19] [%clk 1:13:28] } 15. Rb1 { [%eval -0.22] [%clk 0:32:17] } 15... Ra7 { [%eval 0.09] [%clk 1:10:07] } 16. Rxb2 { [%eval 0.02] [%clk 0:32:32] } 16... b5 { [%eval 0.09] [%clk 1:10:32] } 17. Nf3 { [%eval -0.1] [%clk 0:27:45] } 17... Bg4 { [%eval -0.1] [%clk 1:09:48] } 18. Kf2 { [%eval -0.35] [%clk 0:24:50] } 18... e6 { [%eval -0.1] [%clk 1:08:30] } 19. Nc3?! { [%eval -0.75] } { Inaccuracy. cxb5 was best. } { [%clk 0:23:54] } 19... b4 { [%eval -0.81] [%clk 1:08:04] } 20. Ne2 { [%eval -0.74] [%clk 0:20:46] } 20... Nge7 { [%eval -0.59] [%clk 1:07:15] } 21. Ke3?! { [%eval -1.19] } { Inaccuracy. d4 was best. } { [%clk 0:16:45] } 21... e5 { [%eval -1.08] [%clk 1:06:09] } 22. Ra1 { [%eval -0.88] [%clk 0:16:18] } 22... O-O { [%eval -0.44] [%clk 1:01:39] } 23. h3 { [%eval -0.64] [%clk 0:12:14] } 23... Bd7 { [%eval -0.29] [%clk 1:00:00] } 24. a4 { [%eval -0.58] [%clk 0:10:49] } 24... Kg7 { [%eval -0.29] [%clk 0:57:10] } 25. Rg1 { [%eval -0.41] [%clk 0:10:08] } 25... Re8 { [%eval -0.29] [%clk 0:56:38] } 26. Rbb1 { [%eval -0.49] [%clk 0:09:18] } 26... Ng8 { [%eval -0.38] [%clk 0:56:40] } 27. Kd2 { [%eval -0.31] [%clk 0:08:44] } 27... Bc8 { [%eval -0.18] [%clk 0:54:11] } 28. Rbf1 { [%eval -0.27] [%clk 0:08:21] } 28... Rae7 { [%eval -0.29] [%clk 0:54:11] } 29. Nh4 { [%eval -0.33] [%clk 0:06:57] } 29... f6 { [%eval -0.03] [%clk 0:47:12] } 30. f5 { [%eval -0.03] [%clk 0:06:53] } 30... g5 { [%eval -0.07] [%clk 0:45:22] } 31. Nf3 { [%eval 0.0] [%clk 0:06:48] } 31... Rf8 { [%eval -0.06] [%clk 0:44:30] } 32. g4 { [%eval -0.19] [%clk 0:06:10] } 32... h4 { [%eval -0.02] [%clk 0:44:16] } 33. Kc2 { [%eval -0.15] [%clk 0:05:45] } 33... Nh6 { [%eval -0.08] [%clk 0:43:59] } 34. Rf2 { [%eval -0.1] [%clk 0:05:05] } 34... Rc7 { [%eval -0.09] [%clk 0:44:03] } 35. Kb2 { [%eval -0.14] [%clk 0:04:47] } 35... Nf7 { [%eval -0.03] [%clk 0:44:18] } 36. Rc1 { [%eval -0.08] [%clk 0:04:51] } 36... Nfd8 { [%eval -0.09] [%clk 0:44:25] } 37. Rff1 { [%eval -0.13] [%clk 0:04:38] } 37... Nb7 { [%eval 0.0] [%clk 0:44:46] } 38. Ra1 { [%eval 0.0] [%clk 0:04:52] } 38... Bd7 { [%eval 0.0] [%clk 0:44:55] } 39. Rfb1 { [%eval 0.0] [%clk 0:04:06] } 39... Rb8 { [%eval -0.01] [%clk 0:44:39] } 40. Kc2 { [%eval -0.07] [%clk 0:03:52] } 40... Nd4+ { [%eval -0.14] [%clk 0:44:08] } 41. Nexd4 { [%eval -0.26] [%clk 0:03:27] } 41... cxd4 { [%eval 0.0] [%clk 0:44:35] } 42. Kb2 { [%eval -0.18] [%clk 0:02:33] } 42... Nc5 { [%eval -0.07] [%clk 0:43:23] } 43. Rd1 { [%eval -0.36] [%clk 0:02:54] } 43... Be8 { [%eval -0.09] [%clk 0:43:11] } 44. Ne1 { [%eval -0.04] [%clk 0:03:04] } 44... Bf7 { [%eval -0.05] [%clk 0:43:30] } 45. Nc2 { [%eval -0.06] [%clk 0:03:01] } 45... Rbc8 { [%eval -0.08] [%clk 0:43:24] } 46. Rac1 { [%eval -0.35] [%clk 0:01:57] } 46... a5 { [%eval -0.54] [%clk 0:42:34] } 47. Ne1 { [%eval -0.1] [%clk 0:02:06] } 47... Rb8 { [%eval -0.33] [%clk 0:42:21] } 48. Nc2 { [%eval -0.15] [%clk 0:02:13] } 48... Be8 { [%eval -0.33] [%clk 0:41:35] } 49. Ra1 { [%eval -0.25] [%clk 0:02:39] } 49... Rcb7 { [%eval -0.06] [%clk 0:40:18] } 50. Ne1 { [%eval -0.29] [%clk 0:02:17] } 50... Bc6 { [%eval -0.11] [%clk 0:40:18] } 51. Bf3 { [%eval -0.14] [%clk 0:02:38] } 51... Rc7 { [%eval -0.09] [%clk 0:37:29] } 52. Bg2 { [%eval -0.33] [%clk 0:03:03] } 52... Rbc8 { [%eval -0.1] [%clk 0:37:35] } 53. Bf3 { [%eval -0.47] [%clk 0:03:22] } 53... Nd7 { [%eval -0.04] [%clk 0:37:49] } 54. Rdc1 { [%eval -0.19] [%clk 0:03:19] } 54... Bb7 { [%eval -0.42] [%clk 0:37:55] } 55. Bg2 { [%eval -0.24] [%clk 0:03:40] } 55... Nc5 { [%eval -0.52] [%clk 0:34:10] } 56. Rd1 { [%eval -0.13] [%clk 0:03:53] } 56... Bc6 { [%eval -0.18] [%clk 0:32:59] } 57. Rdc1 { [%eval -0.05] [%clk 0:04:08] } 57... Be8 { [%eval -0.06] [%clk 0:32:48] } 58. Bf3 { [%eval -0.16] [%clk 0:04:20] } 58... Rb8 { [%eval -0.09] [%clk 0:32:11] } 59. Bg2 { [%eval -0.31] [%clk 0:04:41] } 59... Rcb7 { [%eval -0.5] [%clk 0:32:27] } 60. Bf3 { [%eval -0.21] [%clk 0:05:03] } 1/2-1/2