Event: Round 8: Ozbek, Ahmet Naim - Koppenens, Oscar
Date: 2025-05-01
White: Ozbek, Ahmet Naim
WhiteElo: 1915
Black: Koppenens, Oscar
BlackElo: 2024
Result: 0-1
ECO: E05
Opening: Catalan Opening: Open Defense, Classical Line
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:07] } 1... Nf6 { [%eval 0.19] [%clk 1:30:56] } 2. c4 { [%eval 0.18] [%clk 1:30:34] } 2... e6 { [%eval 0.14] [%clk 1:31:23] } 3. g3 { [%eval 0.13] [%clk 1:31:00] } 3... d5 { [%eval 0.12] [%clk 1:31:50] } 4. Nf3 { [%eval 0.1] [%clk 1:31:26] } 4... Be7 { [%eval 0.2] [%clk 1:32:17] } 5. Bg2 { [%eval 0.16] [%clk 1:31:52] } 5... O-O { [%eval 0.25] [%clk 1:32:43] } 6. O-O { [%eval 0.2] [%clk 1:32:18] } 6... dxc4 { [%eval 0.16] [%clk 1:33:10] } 7. Qc2 { [%eval 0.1] [%clk 1:32:43] } 7... b5 { [%eval 0.28] [%clk 1:33:37] } 8. a4 { [%eval 0.31] [%clk 1:31:25] } 8... b4 { [%eval 0.61] [%clk 1:34:01] } 9. Nbd2 { [%eval 0.22] [%clk 1:24:28] } 9... Nbd7 { [%eval 0.73] [%clk 1:29:01] } 10. Nxc4 { [%eval 0.39] [%clk 1:24:15] } 10... Bb7 { [%eval 0.43] [%clk 1:22:53] } 11. Rd1 { [%eval 0.2] [%clk 1:18:43] } 11... Rc8 { [%eval 0.23] [%clk 1:19:15] } 12. Nfe5 { [%eval 0.2] [%clk 1:10:24] } 12... Bxg2 { [%eval 0.11] [%clk 1:18:44] } 13. Kxg2 { [%eval 0.17] [%clk 1:10:40] } 13... c5 { [%eval 0.12] [%clk 1:19:05] } 14. dxc5 { [%eval 0.21] [%clk 1:07:30] } 14... Rxc5 { [%eval 0.3] [%clk 1:17:56] } 15. Qb3?? { [%eval -1.92] } { Blunder. Nxd7 was best. } { [%clk 1:05:21] } 15... Qa8+ { [%eval -1.9] [%clk 1:16:00] } 16. Nf3 { [%eval -1.77] [%clk 1:04:46] } 16... Rfc8 { [%eval -1.92] [%clk 1:15:17] } 17. Ne3 { [%eval -1.9] [%clk 0:59:55] } 17... a5 { [%eval -1.62] [%clk 1:11:34] } 18. Bd2 { [%eval -1.84] [%clk 0:57:19] } 18... Qc6?! { [%eval -1.06] } { Inaccuracy. h5 was best. } { [%clk 1:07:44] } 19. Rdc1?! { [%eval -2.24] } { Inaccuracy. Kg1 was best. } { [%clk 0:51:42] } 19... Ne4 { [%eval -2.08] [%clk 1:07:34] } 20. Rd1 { [%eval -2.12] [%clk 0:44:04] } 20... Bf6 { [%eval -1.64] [%clk 1:03:32] } 21. Ng4 { [%eval -1.74] [%clk 0:39:47] } 21... Rc2? { [%eval -0.53] } { Mistake. Be7 was best. } { [%clk 0:56:48] } 22. Rac1?! { [%eval -1.35] } { Inaccuracy. Nxf6+ was best. } { [%clk 0:36:23] } 22... Nxd2? { [%eval 0.03] } { Mistake. Bxb2 was best. } { [%clk 0:51:07] } 23. Rxc2 { [%eval -0.07] [%clk 0:36:39] } 23... Nxb3 { [%eval 0.0] [%clk 0:51:18] } 24. Rxc6 { [%eval -0.01] [%clk 0:35:19] } 24... Rxc6 { [%eval 0.0] [%clk 0:51:38] } 25. Rxd7 { [%eval 0.0] [%clk 0:35:11] } 25... Rc2 { [%eval 0.0] [%clk 0:51:29] } 26. Nd4 { [%eval 0.0] [%clk 0:34:18] } 26... Nxd4 { [%eval -0.04] [%clk 0:51:25] } 27. Nxf6+ { [%eval -0.07] [%clk 0:34:43] } 27... gxf6 { [%eval -0.02] [%clk 0:51:49] } 28. Rxd4 { [%eval 0.0] [%clk 0:35:07] } 28... Rxe2 { [%eval -0.02] [%clk 0:49:30] } 29. Rd8+ { [%eval -0.13] [%clk 0:34:59] } 29... Kg7 { [%eval 0.0] [%clk 0:49:56] } 30. Ra8 { [%eval -0.02] [%clk 0:34:46] } 30... Re5 { [%eval -0.02] [%clk 0:50:12] } 31. Rb8 { [%eval -0.26] [%clk 0:35:00] } 31... f5 { [%eval -0.24] [%clk 0:50:03] } 32. Rb5 { [%eval -0.33] [%clk 0:35:07] } 32... Kf6 { [%eval -0.47] [%clk 0:49:54] } 33. Rb8 { [%eval -0.55] [%clk 0:35:02] } 33... Rc5 { [%eval -0.25] [%clk 0:48:27] } 34. Kf3 { [%eval -0.31] [%clk 0:35:14] } 34... h5 { [%eval -0.4] [%clk 0:46:38] } 35. Ke3 { [%eval -0.48] [%clk 0:35:00] } 35... e5 { [%eval -0.25] [%clk 0:46:40] } 36. Kd2?? { [%eval -2.22] } { Blunder. Rb6+ was best. } { [%clk 0:34:43] } 36... Rd5+?? { [%eval -0.47] } { Blunder. e4 was best. } { [%clk 0:43:59] } 37. Ke2?? { [%eval -2.45] } { Blunder. Ke3 was best. } { [%clk 0:33:14] } 37... e4 { [%eval -2.82] [%clk 0:42:40] } 38. Re8 { [%eval -2.73] [%clk 0:32:16] } 38... Re5 { [%eval -2.31] [%clk 0:42:37] } 39. Rh8 { [%eval -2.74] [%clk 0:32:19] } 39... Rc5 { [%eval -2.8] [%clk 0:42:15] } 40. Kd2?! { [%eval -4.25] } { Inaccuracy. f3 was best. } { [%clk 0:32:33] } 40... b3 { [%eval -4.11] [%clk 0:41:49] } 41. Rh6+ { [%eval -4.99] [%clk 0:31:19] } 41... Kg5 { [%eval -4.69] [%clk 0:41:51] } 42. Rb6 { [%eval -5.22] [%clk 0:31:23] } 42... Rc2+ { [%eval -4.88] [%clk 0:41:50] } 43. Ke1 { [%eval -6.08] [%clk 0:30:39] } 43... Rxb2 { [%eval -6.06] [%clk 0:42:06] } 44. h3 { [%eval -5.89] [%clk 0:28:56] } 44... Ra2 { [%eval -5.02] [%clk 0:41:48] } 45. Rxb3 { [%eval -5.02] [%clk 0:29:07] } 45... Rxa4 { [%eval -4.91] [%clk 0:42:11] } 46. Rb6 { [%eval -4.95] [%clk 0:29:07] } 46... f4 { [%eval -4.68] [%clk 0:41:57] } 47. Rb5+?! { [%eval -5.94] } { Inaccuracy. gxf4+ was best. } { [%clk 0:28:52] } 47... f5 { [%eval -5.78] [%clk 0:42:16] } 48. Rb8 { [%eval -6.1] [%clk 0:28:49] } 48... Ra1+ { [%eval -6.05] [%clk 0:42:28] } 49. Kd2 { [%eval -7.5] [%clk 0:28:53] } 49... Ra2+ { [%eval -6.23] [%clk 0:42:46] } 50. Ke1 { [%eval -6.12] [%clk 0:29:12] } 50... fxg3 { [%eval -6.2] [%clk 0:42:48] } 51. fxg3 { [%eval -6.28] [%clk 0:28:01] } 51... a4 { [%eval -6.22] [%clk 0:41:49] } 52. Ra8 { [%eval -6.47] [%clk 0:27:58] } 52... Kf6 { [%eval -6.27] [%clk 0:41:55] } 53. Ra5 { [%eval -6.81] [%clk 0:28:06] } 53... Rg2 { [%eval -6.87] [%clk 0:41:58] } 54. g4 { [%eval -7.0] [%clk 0:28:22] } 54... hxg4 { [%eval -7.32] [%clk 0:41:47] } 55. hxg4 { [%eval -7.33] [%clk 0:28:47] } 55... Rxg4 { [%eval -7.04] [%clk 0:42:07] } 56. Rxa4 { [%eval -7.54] [%clk 0:29:12] } 56... Ke5 { [%eval -7.1] [%clk 0:42:17] } 57. Kf2? { [%eval #-11] } { Checkmate is now unavoidable. Ra5+ was best. } { [%clk 0:29:27] } 57... Kf4? { [%eval -7.7] } { Lost forced checkmate sequence. e3+ was best. } { [%clk 0:42:40] } 58. Rb4 { [%eval -7.64] [%clk 0:29:42] } 58... Rg8 { [%eval -7.61] [%clk 0:43:02] } 59. Ra4 { [%eval -7.48] [%clk 0:29:26] } 59... Rb8 { [%eval -7.73] [%clk 0:43:23] } 60. Ra2 { [%eval -7.92] [%clk 0:29:49] } 60... Rb3 { [%eval -7.9] [%clk 0:43:44] } 61. Rc2 { [%eval -7.69] [%clk 0:29:55] } 61... Rd3 { [%eval -7.47] [%clk 0:43:26] } 62. Ke2 { [%eval -9.23] [%clk 0:29:58] } 62... Rh3 { [%eval -8.44] [%clk 0:43:50] } 63. Rc4 { [%eval -9.9] [%clk 0:30:04] } 63... Rh2+ { [%eval -8.97] [%clk 0:44:12] } 64. Kf1? { [%eval #-16] } { Checkmate is now unavoidable. Kd1 was best. } { [%clk 0:29:53] } 64... Kf3 { [%eval #-15] [%clk 0:44:32] } 65. Kg1 { [%eval #-15] [%clk 0:30:19] } 65... Rg2+ { [%eval #-15] [%clk 0:44:53] } 66. Kh1 { [%eval #-14] [%clk 0:30:32] } 66... Ra2 { [%eval #-14] [%clk 0:44:57] } 67. Rc1 { [%eval -14.29] [%clk 0:30:43] } 67... e3 { [%eval -27.88] [%clk 0:45:20] } 68. Kg1 { [%eval -56.96] [%clk 0:30:51] } 68... Rd2 { [%eval -10.86] [%clk 0:45:36] } 69. Rf1+?! { [%eval #-7] } { Checkmate is now unavoidable. Kf1 was best. } { [%clk 0:31:07] } 69... Kg3 { [%eval #-6] [%clk 0:45:33] } 70. Ra1 { [%eval #-6] [%clk 0:31:15] } 70... f4 { [%eval #-5] [%clk 0:45:49] } 71. Rb1 { [%eval #-5] [%clk 0:31:32] } 71... e2 { [%eval #-4] [%clk 0:46:02] } 0-1