Event: Round 5: Juan Pablo Sierra Mejia - Santiago Ospina Castro
Date: 2023-06-18
White: Juan Pablo Sierra Mejia
Black: Santiago Ospina Castro
Result: 0-1
ECO: D58
Opening: Queen's Gambit Declined: Tartakower Defense
Variant: Standard

1. d4 { [%eval 0.0] [%clk 1:17:01] } 1... d5 { [%eval 0.27] [%clk 1:28:25] } 2. c4 { [%eval 0.29] [%clk 1:17:01] } 2... e6 { [%eval 0.3] [%clk 1:28:52] } 3. Nc3 { [%eval 0.39] [%clk 1:17:07] } 3... Nf6 { [%eval 0.43] [%clk 1:29:17] } 4. Nf3 { [%eval 0.0] [%clk 1:17:20] } 4... Be7 { [%eval 0.0] [%clk 1:29:38] } 5. Bg5 { [%eval 0.0] [%clk 1:16:45] } 5... h6 { [%eval 0.16] [%clk 1:29:58] } 6. Bh4 { [%eval 0.0] [%clk 1:16:19] } 6... O-O { [%eval 0.0] [%clk 1:30:24] } 7. e3 { [%eval 0.0] [%clk 1:16:14] } 7... b6 { [%eval 0.0] [%clk 1:30:51] } 8. Bd3 { [%eval 0.13] [%clk 1:14:25] } 8... Bb7 { [%eval 0.12] [%clk 1:29:17] } 9. O-O { [%eval 0.09] [%clk 1:14:01] } 9... Nbd7 { [%eval 0.05] [%clk 1:26:42] } 10. Qe2 { [%eval 0.0] [%clk 1:07:42] } 10... dxc4 { [%eval 0.2] [%clk 1:27:08] } 11. Bxc4 { [%eval 0.21] [%clk 1:08:01] } 11... Ne4 { [%eval 0.28] [%clk 1:27:36] } 12. Bxe7 { [%eval -0.12] [%clk 1:07:29] } 12... Qxe7 { [%eval 0.06] [%clk 1:28:01] } 13. Nxe4 { [%eval -0.12] [%clk 1:07:41] } 13... Bxe4 { [%eval -0.01] [%clk 1:28:23] } 14. Nd2 { [%eval -0.13] [%clk 1:08:00] } 14... Bb7 { [%eval -0.01] [%clk 1:23:33] } 15. Rfd1 { [%eval -0.19] [%clk 1:02:49] } 15... c5 { [%eval -0.15] [%clk 1:22:54] } 16. Nb3 { [%eval -0.13] [%clk 1:02:05] } 16... Rfd8 { [%eval -0.01] [%clk 1:17:35] } 17. a4 { [%eval -0.26] [%clk 0:57:07] } 17... cxd4 { [%eval -0.34] [%clk 1:13:14] } 18. Nxd4 { [%eval -0.34] [%clk 0:56:46] } 18... a5 { [%eval -0.34] [%clk 1:13:31] } 19. f3 { [%eval -0.54] [%clk 0:52:38] } 19... Nc5 { [%eval -0.55] [%clk 1:06:35] } 20. Qe1 { [%eval -0.94] [%clk 0:47:04] } 20... Qg5 { [%eval -0.86] [%clk 0:49:08] } 21. e4 { [%eval -0.98] [%clk 0:39:06] } 21... Ba6 { [%eval -0.93] [%clk 0:46:00] } 22. Bxa6 { [%eval -0.98] [%clk 0:36:33] } 22... Nxa6 { [%eval -0.95] [%clk 0:45:44] } 23. Qf2 { [%eval -0.98] [%clk 0:32:06] } 23... Rac8 { [%eval -1.22] [%clk 0:37:59] } 24. Nb3 { [%eval -1.52] [%clk 0:23:29] } 24... Nc5?! { [%eval -0.81] } { Inaccuracy. Nb4 was best. } { [%clk 0:37:36] } 25. f4 { [%eval -1.25] [%clk 0:23:06] } 25... Qe7 { [%eval -1.26] [%clk 0:37:47] } 26. Rxd8+?! { [%eval -2.1] } { Inaccuracy. Nxc5 was best. } { [%clk 0:20:42] } 26... Qxd8 { [%eval -1.75] [%clk 0:38:12] } 27. Nxc5 { [%eval -1.98] [%clk 0:20:58] } 27... Rxc5 { [%eval -1.84] [%clk 0:38:38] } 28. f5 { [%eval -1.87] [%clk 0:18:48] } 28... e5 { [%eval -2.25] [%clk 0:34:42] } 29. Rf1 { [%eval -2.73] [%clk 0:15:46] } 29... Qd3 { [%eval -2.3] [%clk 0:29:41] } 30. f6 { [%eval -2.36] [%clk 0:15:00] } 30... Qxe4? { [%eval -0.87] } { Mistake. g6 was best. } { [%clk 0:29:35] } 31. fxg7 { [%eval -0.75] [%clk 0:11:46] } 31... Qd4 { [%eval -0.22] [%clk 0:29:50] } 32. Qxd4 { [%eval -0.32] [%clk 0:08:41] } 32... exd4 { [%eval -0.29] [%clk 0:30:17] } 33. Rd1?! { [%eval -0.91] } { Inaccuracy. Rf6 was best. } { [%clk 0:08:26] } 33... Rc2 { [%eval -0.61] [%clk 0:28:11] } 34. Rxd4 { [%eval -0.67] [%clk 0:08:04] } 34... Rxb2 { [%eval -0.58] [%clk 0:28:38] } 35. Rd6 { [%eval -0.45] [%clk 0:08:18] } 35... Kxg7 { [%eval -0.28] [%clk 0:28:56] } 36. h3?! { [%eval -1.09] } { Inaccuracy. g4 was best. } { [%clk 0:08:38] } 36... h5 { [%eval -1.02] [%clk 0:25:03] } 37. Kh2?! { [%eval -1.82] } { Inaccuracy. g3 was best. } { [%clk 0:08:22] } 37... h4 { [%eval -2.3] [%clk 0:25:02] } 38. Rc6 { [%eval -2.23] [%clk 0:06:49] } 38... Rb4 { [%eval -1.77] [%clk 0:23:37] } 39. g4? { [%eval -3.36] } { Mistake. Kg1 was best. } { [%clk 0:03:55] } 39... Rb2+?? { [%eval -1.08] } { Blunder. hxg3+ was best. } { [%clk 0:15:35] } 40. Kg1 { [%eval -1.09] [%clk 0:04:17] } 40... f6 { [%eval -1.09] [%clk 0:16:01] } 41. Rd6 { [%eval -1.46] [%clk 0:03:20] } 41... Kg6 { [%eval -1.18] [%clk 0:15:50] } 42. Kf1 { [%eval -1.19] [%clk 0:02:54] } 42... Rb4 { [%eval -1.12] [%clk 0:05:19] } 43. Kg2 { [%eval -1.27] [%clk 0:03:10] } 43... Rxa4?! { [%eval -0.68] } { Inaccuracy. Kf7 was best. } { [%clk 0:05:29] } 44. Rxb6 { [%eval -0.64] [%clk 0:03:31] } 44... Ra2+ { [%eval -0.52] [%clk 0:05:57] } 45. Kf3? { [%eval -2.25] } { Mistake. Kg1 was best. } { [%clk 0:02:34] } 45... a4 { [%eval -1.97] [%clk 0:02:50] } 46. Ra6?! { [%eval -3.15] } { Inaccuracy. Rb4 was best. } { [%clk 0:02:03] } 46... a3 { [%eval -3.37] [%clk 0:03:01] } 47. Kf4 { [%eval -3.58] [%clk 0:02:02] } 47... Rf2+ { [%eval -3.31] [%clk 0:03:24] } 48. Ke3? { [%eval -5.59] } { Mistake. Ke4 was best. } { [%clk 0:02:28] } 48... Rh2 { [%eval -6.19] [%clk 0:02:57] } 49. Kf4 { [%eval -6.85] [%clk 0:02:51] } 49... Rxh3 { [%eval -6.93] [%clk 0:01:58] } 50. g5 { [%eval -7.17] [%clk 0:03:09] } 50... Rb3 { [%eval -6.89] [%clk 0:02:04] } 51. Rxf6+ { [%eval -6.98] [%clk 0:02:08] } 51... Kg7 { [%eval -7.03] [%clk 0:02:30] } 52. Ra6 { [%eval -7.27] [%clk 0:02:17] } 52... h3 { [%eval -7.3] [%clk 0:02:54] } 53. Ra7+ { [%eval -7.41] [%clk 0:02:42] } 53... Kf8 { [%eval -8.38] [%clk 0:02:16] } 54. Ra8+ { [%eval -7.8] [%clk 0:03:10] } 54... Ke7 { [%eval -7.22] [%clk 0:02:15] } 55. Ra7+ { [%eval -8.68] [%clk 0:03:32] } 55... Kd6 { [%eval -8.85] [%clk 0:02:37] } 56. Ra6+ { [%eval -9.45] [%clk 0:02:26] } 56... Kc5 { [%eval -7.52] [%clk 0:02:47] } 57. g6?! { [%eval -14.94] } { Inaccuracy. Ra5+ was best. } { [%clk 0:02:19] } 57... h2 { [%eval -14.95] [%clk 0:03:03] } 58. g7?? { [%eval #-12] } { Checkmate is now unavoidable. Ra5+ was best. } { [%clk 0:02:19] } 58... Rb8? { [%eval -7.02] } { Lost forced checkmate sequence. h1=Q was best. } { [%clk 0:01:35] } 59. Ra5+ { [%eval -9.04] [%clk 0:02:32] } 59... Kb4?! { [%eval -5.43] } { Inaccuracy. Kc4 was best. } { [%clk 0:01:34] } 60. Rh5 { [%eval -5.06] [%clk 0:02:44] } 60... Rg8 { [%eval -4.94] [%clk 0:01:05] } 61. Rxh2 { [%eval -5.39] [%clk 0:02:33] } 61... Rxg7 { [%eval -5.29] [%clk 0:01:30] } 62. Ke4 { [%eval -5.3] [%clk 0:02:29] } 62... Ra7 { [%eval -4.9] [%clk 0:01:56] } 63. Kd4 { [%eval -4.87] } 0-1