Event: Round 7: Obando Guzman, Soren Federico - Ospina Castro, Santiago
Date: 2024-09-21
White: Obando Guzman, Soren Federico
WhiteElo: 2073
Black: Ospina Castro, Santiago
BlackTitle: FM
BlackElo: 2106
Result: 0-1
ECO: A08
Opening: King's Indian Attack: Sicilian Variation
Variant: Standard

1. Nf3 { [%eval 0.17] [%clk 1:25:37] } 1... d5 { [%eval 0.18] [%clk 1:30:57] } 2. g3 { [%eval 0.08] [%clk 1:25:49] } 2... c5 { [%eval 0.17] [%clk 1:31:24] } 3. Bg2 { [%eval 0.11] [%clk 1:25:56] } 3... g6 { [%eval 0.28] [%clk 1:31:47] } 4. O-O { [%eval -0.02] [%clk 1:25:52] } 4... Bg7 { [%eval 0.04] [%clk 1:32:15] } 5. d4 { [%eval -0.03] [%clk 1:26:11] } 5... cxd4 { [%eval 0.08] [%clk 1:32:22] } 6. Nxd4 { [%eval 0.12] [%clk 1:26:38] } 6... e5 { [%eval 0.06] [%clk 1:32:36] } 7. Nb3 { [%eval 0.05] [%clk 1:25:32] } 7... Ne7 { [%eval 0.0] [%clk 1:32:46] } 8. c4 { [%eval 0.03] [%clk 1:25:23] } 8... d4 { [%eval 0.07] [%clk 1:33:10] } 9. e3 { [%eval 0.04] [%clk 1:14:21] } 9... O-O { [%eval 0.01] [%clk 1:33:33] } 10. exd4 { [%eval 0.02] [%clk 1:14:40] } 10... exd4 { [%eval 0.05] [%clk 1:34:02] } 11. Re1 { [%eval 0.08] [%clk 1:14:32] } 11... Nec6 { [%eval 0.01] [%clk 1:34:29] } 12. Bf4?! { [%eval -0.67] } { Inaccuracy. Na3 was best. } { [%clk 1:08:04] } 12... g5 { [%eval -0.59] [%clk 1:33:18] } 13. Bd2 { [%eval -0.73] [%clk 1:07:03] } 13... Nd7 { [%eval -0.62] [%clk 1:33:47] } 14. Qh5 { [%eval -0.74] [%clk 0:58:04] } 14... h6 { [%eval -0.66] [%clk 1:34:10] } 15. f4 { [%eval -0.68] [%clk 0:57:27] } 15... Nf6 { [%eval -0.55] [%clk 1:34:36] } 16. Qd1 { [%eval -0.91] [%clk 0:57:45] } 16... Bg4 { [%eval -0.94] [%clk 1:25:31] } 17. Bf3 { [%eval -0.87] [%clk 0:55:15] } 17... Bxf3 { [%eval -0.89] [%clk 1:25:46] } 18. Qxf3 { [%eval -0.77] [%clk 0:55:42] } 18... g4 { [%eval -0.79] [%clk 1:23:48] } 19. Qg2?! { [%eval -1.79] } { Inaccuracy. Qd3 was best. } { [%clk 0:55:04] } 19... Qd6?! { [%eval -1.05] } { Inaccuracy. a5 was best. } { [%clk 1:19:50] } 20. Na3 { [%eval -0.95] [%clk 0:49:18] } 20... a6?! { [%eval -0.16] } { Inaccuracy. Qd7 was best. } { [%clk 1:19:08] } 21. c5 { [%eval -0.21] [%clk 0:43:22] } 21... Qd5 { [%eval 0.01] [%clk 1:19:25] } 22. Qxd5 { [%eval 0.01] [%clk 0:42:55] } 22... Nxd5 { [%eval 0.0] [%clk 1:19:54] } 23. Nc4 { [%eval 0.0] [%clk 0:43:13] } 23... Rad8 { [%eval 0.05] [%clk 1:18:32] } 24. a3 { [%eval 0.0] [%clk 0:40:38] } 24... d3 { [%eval -0.03] [%clk 1:08:31] } 25. Re4 { [%eval -0.41] [%clk 0:33:43] } 25... f5 { [%eval -0.55] [%clk 1:05:19] } 26. Re6 { [%eval -0.55] [%clk 0:33:42] } 26... Nc7?! { [%eval 0.0] } { Inaccuracy. Nd4 was best. } { [%clk 1:01:49] } 27. Rd6 { [%eval 0.0] [%clk 0:32:31] } 27... Nb5 { [%eval 0.0] [%clk 1:01:16] } 28. Rxd8 { [%eval 0.0] [%clk 0:31:51] } 28... Rxd8 { [%eval -0.07] [%clk 1:01:44] } 29. Kf1 { [%eval -0.07] [%clk 0:29:09] } 29... Ncd4 { [%eval 0.01] [%clk 0:49:24] } 30. Nxd4 { [%eval -0.07] [%clk 0:29:10] } 30... Nxd4 { [%eval -0.09] [%clk 0:48:58] } 31. b4?? { [%eval -2.24] } { Blunder. Rd1 was best. } { [%clk 0:11:40] } 31... Nf3 { [%eval -1.98] [%clk 0:44:27] } 32. Rd1?! { [%eval -2.86] } { Inaccuracy. Rc1 was best. } { [%clk 0:11:46] } 32... Re8 { [%eval -2.83] [%clk 0:44:29] } 33. Ne5 { [%eval -2.62] [%clk 0:06:21] } 33... Bxe5 { [%eval -2.97] [%clk 0:39:37] } 34. fxe5 { [%eval -2.77] [%clk 0:06:49] } 34... Rxe5 { [%eval -2.77] [%clk 0:39:48] } 35. Bxh6 { [%eval -2.75] [%clk 0:05:57] } 35... Nxh2+ { [%eval -2.76] [%clk 0:40:01] } 36. Kg1 { [%eval -2.73] [%clk 0:03:36] } 36... Nf3+ { [%eval -2.39] [%clk 0:35:05] } 37. Kf2?? { [%eval -6.21] } { Blunder. Kf1 was best. } { [%clk 0:04:03] } 37... Re2+ { [%eval -6.0] [%clk 0:35:13] } 38. Kf1 { [%eval -6.71] [%clk 0:04:27] } 38... Nh2+ { [%eval -6.92] [%clk 0:34:15] } 39. Kg1 { [%eval -6.61] [%clk 0:04:51] } 39... d2 { [%eval -7.04] [%clk 0:34:00] } 40. Bxd2 { [%eval -6.89] [%clk 0:04:50] } 40... Rxd2 { [%eval -6.57] [%clk 0:34:11] } 41. Rc1?? { [%eval #-24] } { Checkmate is now unavoidable. Rxd2 was best. } { [%clk 0:05:06] } 41... Nf3+?? { [%eval -6.24] } { Lost forced checkmate sequence. f4 was best. } { [%clk 0:34:22] } 42. Kf1 { [%eval -6.2] [%clk 0:05:35] } 42... Kf7 { [%eval -6.05] [%clk 0:29:48] } 43. c6 { [%eval -6.6] [%clk 0:05:19] } 43... bxc6 { [%eval -6.33] [%clk 0:30:13] } 44. Rxc6?? { [%eval #-10] } { Checkmate is now unavoidable. Rc5 was best. } { [%clk 0:05:43] } 44... f4 { [%eval #-9] [%clk 0:30:21] } 45. Rc7+ { [%eval #-9] [%clk 0:05:02] } 45... Ke8 { [%eval #-8] [%clk 0:30:25] } 0-1