Event: Round 1: Juergen Koch - Arjan Drenthen
Date: 2023-08-02
White: Juergen Koch
Black: Arjan Drenthen
Result: 0-1
ECO: E60
Opening: Indian Defense: West Indian Defense
Variant: Standard

1. d4 { [%eval 0.0] [%clk 1:30:57] } 1... Nf6 { [%eval 0.28] [%clk 1:30:31] } 2. c4 { [%eval 0.16] [%clk 1:31:16] } 2... g6 { [%eval 0.3] [%clk 1:29:51] } 3. Bf4 { [%eval 0.06] [%clk 1:31:28] } 3... d5 { [%eval 0.22] [%clk 1:29:44] } 4. e3 { [%eval 0.04] [%clk 1:31:41] } 4... Bg7 { [%eval 0.3] [%clk 1:29:50] } 5. Nf3 { [%eval -0.07] [%clk 1:32:02] } 5... O-O { [%eval 0.0] [%clk 1:29:49] } 6. Be2 { [%eval -0.28] [%clk 1:32:22] } 6... e6?! { [%eval 0.78] } { Inaccuracy. c5 was best. } { [%clk 1:28:48] } 7. O-O { [%eval 0.97] [%clk 1:32:43] } 7... Nbd7 { [%eval 0.66] [%clk 1:28:31] } 8. Nc3 { [%eval 0.63] [%clk 1:32:53] } 8... c6 { [%eval 0.9] [%clk 1:28:16] } 9. c5 { [%eval 1.02] [%clk 1:32:05] } 9... Re8 { [%eval 0.9] [%clk 1:27:11] } 10. b4 { [%eval 1.0] [%clk 1:31:46] } 10... b5? { [%eval 2.38] } { Mistake. Ng4 was best. } { [%clk 1:21:49] } 11. cxb6?? { [%eval 0.46] } { Blunder. a4 was best. } { [%clk 1:30:20] } 11... axb6 { [%eval 0.35] [%clk 1:21:42] } 12. a4 { [%eval 0.36] [%clk 1:30:08] } 12... Nh5 { [%eval 0.36] [%clk 1:16:12] } 13. Bg5 { [%eval 0.35] [%clk 1:29:27] } 13... Qc7 { [%eval 0.39] [%clk 1:15:33] } 14. Qb3?! { [%eval -0.45] } { Inaccuracy. Ne1 was best. } { [%clk 1:29:31] } 14... e5?? { [%eval 1.22] } { Blunder. h6 was best. } { [%clk 1:12:58] } 15. dxe5? { [%eval -0.08] } { Mistake. b5 was best. } { [%clk 1:28:08] } 15... Nxe5 { [%eval -0.15] [%clk 1:11:04] } 16. Rac1 { [%eval -0.01] [%clk 1:27:58] } 16... Be6?! { [%eval 0.57] } { Inaccuracy. Nxf3+ was best. } { [%clk 1:08:14] } 17. Qa3? { [%eval -0.96] } { Mistake. Nd4 was best. } { [%clk 1:25:23] } 17... Nf6? { [%eval 0.46] } { Mistake. Nc4 was best. } { [%clk 1:00:07] } 18. Nd4 { [%eval 0.09] [%clk 1:25:23] } 18... Ne4?! { [%eval 1.01] } { Inaccuracy. Nc4 was best. } { [%clk 0:54:00] } 19. Bf4?! { [%eval 0.04] } { Inaccuracy. Nxe4 was best. } { [%clk 1:23:02] } 19... Nxc3 { [%eval 0.12] [%clk 0:53:22] } 20. Rxc3 { [%eval -0.06] [%clk 1:23:13] } 20... Bd7? { [%eval 1.27] } { Mistake. Qb7 was best. } { [%clk 0:52:30] } 21. Rfc1? { [%eval 0.08] } { Mistake. Nxc6 was best. } { [%clk 1:23:13] } 21... Qb7 { [%eval 0.21] [%clk 0:49:49] } 22. Rb3? { [%eval -1.0] } { Mistake. h3 was best. } { [%clk 1:17:59] } 22... b5 { [%eval -0.5] [%clk 0:45:45] } 23. a5 { [%eval -0.4] [%clk 1:18:09] } 23... Nc4 { [%eval -0.35] [%clk 0:45:29] } 24. Qa2 { [%eval -0.35] [%clk 1:13:32] } 24... Re7 { [%eval -0.11] [%clk 0:43:38] } 25. Bxc4 { [%eval -0.51] [%clk 1:11:45] } 25... dxc4 { [%eval -0.43] [%clk 0:43:29] } 26. Rbb1 { [%eval -0.45] [%clk 1:10:52] } 26... Rae8?! { [%eval 0.57] } { Inaccuracy. Be8 was best. } { [%clk 0:41:12] } 27. Bd6 { [%eval 1.0] [%clk 1:06:58] } 27... Re4 { [%eval 0.46] [%clk 0:39:54] } 28. Bc5 { [%eval 0.11] [%clk 1:07:16] } 28... Ra8 { [%eval 0.34] [%clk 0:35:10] } 29. Rd1 { [%eval 0.0] [%clk 1:07:26] } 29... Bf8 { [%eval 0.33] [%clk 0:34:57] } 30. Bb6 { [%eval -0.1] [%clk 1:06:36] } 30... Qxb6?! { [%eval 0.94] } { Inaccuracy. Bxb4 was best. } { [%clk 0:30:27] } 31. Qc2 { [%eval 1.0] [%clk 1:06:33] } 31... Qc7 { [%eval 1.03] [%clk 0:26:04] } 32. Qxe4 { [%eval 0.96] [%clk 1:04:54] } 32... Re8 { [%eval 1.34] [%clk 0:25:12] } 33. Qf3 { [%eval 1.33] [%clk 1:04:41] } 33... h5 { [%eval 1.75] [%clk 0:22:51] } 34. Rd2?! { [%eval 1.03] } { Inaccuracy. a6 was best. } { [%clk 1:04:42] } 34... c5 { [%eval 0.82] [%clk 0:17:01] } 35. bxc5 { [%eval 0.89] [%clk 1:04:49] } 35... Qxc5? { [%eval 2.1] } { Mistake. b4 was best. } { [%clk 0:15:57] } 36. Qb7 { [%eval 1.67] [%clk 1:03:50] } 36... c3 { [%eval 2.09] [%clk 0:14:44] } 37. Rc2? { [%eval 0.45] } { Mistake. Ra2 was best. } { [%clk 1:02:59] } 37... Bf5 { [%eval 0.41] [%clk 0:12:32] } 38. Nxf5 { [%eval 0.0] [%clk 1:03:02] } 38... Qxf5 { [%eval 0.52] [%clk 0:12:57] } 39. Rbc1 { [%eval 0.0] [%clk 1:00:27] } 39... b4 { [%eval 0.0] [%clk 0:13:21] } 40. a6 { [%eval 0.0] [%clk 0:59:18] } 40... Rd8 { [%eval 0.21] [%clk 0:13:22] } 41. e4 { [%eval -0.33] [%clk 0:59:00] } 41... Qa5 { [%eval -0.59] [%clk 0:11:24] } 42. h3? { [%eval -1.9] } { Mistake. e5 was best. } { [%clk 0:55:26] } 42... Bh6?? { [%eval -0.17] } { Blunder. Rd6 was best. } { [%clk 0:11:34] } 43. Rb1?? { [%eval -2.76] } { Blunder. Rf1 was best. } { [%clk 0:54:55] } 43... Qa4 { [%eval -3.17] [%clk 0:10:35] } 44. Re2 { [%eval -3.71] [%clk 0:54:56] } 44... c2 { [%eval -3.71] [%clk 0:07:49] } 45. Rf1 { [%eval -3.84] [%clk 0:54:34] } 45... c1=Q { [%eval -4.14] } 46. Rxc1 { [%eval -4.26] [%clk 0:54:46] } 46... Bxc1 { [%eval -4.36] [%clk 0:08:03] } 47. Kh2 { [%eval -4.61] [%clk 0:53:31] } 47... Qa5?! { [%eval -3.34] } { Inaccuracy. Qd1 was best. } { [%clk 0:06:08] } 48. Rc2 { [%eval -3.5] [%clk 0:53:15] } 48... Bf4+ { [%eval -3.39] [%clk 0:06:18] } 49. g3 { [%eval -3.53] [%clk 0:53:36] } 49... Be5 { [%eval -3.48] [%clk 0:05:46] } 50. a7 { [%eval -3.77] [%clk 0:52:17] } 50... Bd4? { [%eval -1.84] } { Mistake. Kg7 was best. } { [%clk 0:03:29] } 51. Rc7?? { [%eval -5.43] } { Blunder. Rc8 was best. } { [%clk 0:51:37] } 51... Bxa7? { [%eval -2.82] } { Mistake. Qa2 was best. } { [%clk 0:00:55] } 52. Rxf7?! { [%eval -3.64] } { Inaccuracy. Qxa7 was best. } { [%clk 0:50:56] } 52... Bd4 { [%eval -3.69] [%clk 0:01:02] } 53. Rf3 { [%eval -3.9] [%clk 0:48:25] } 53... Rf8 { [%eval -4.02] [%clk 0:00:46] } 54. Rxf8+ { [%eval -4.02] [%clk 0:47:53] } 54... Kxf8 { [%eval -3.97] [%clk 0:01:15] } 55. Qc8+ { [%eval -4.0] [%clk 0:47:22] } 55... Ke7 { [%eval -4.0] [%clk 0:01:36] } 56. Qb7+ { [%eval -4.15] [%clk 0:46:50] } 56... Kd6 { [%eval -4.37] [%clk 0:01:16] } 57. Qf7 { [%eval -5.01] [%clk 0:46:54] } 57... Qb6?! { [%eval -3.59] } { Inaccuracy. Qe5 was best. } { [%clk 0:01:00] } 58. Qxg6+ { [%eval -3.4] [%clk 0:46:33] } 58... Kc7 { [%eval -2.96] [%clk 0:01:22] } 59. Qf7+ { [%eval -3.2] [%clk 0:46:13] } 59... Kc6 { [%eval -2.78] [%clk 0:01:37] } 60. Qd5+ { [%eval -2.84] [%clk 0:44:58] } 60... Kc7 { [%eval -2.95] [%clk 0:02:02] } 61. Qf7+ { [%eval -2.91] [%clk 0:43:43] } 61... Kb8?! { [%eval -1.97] } { Inaccuracy. Kd6 was best. } { [%clk 0:02:18] } 62. Qe8+ { [%eval -2.39] [%clk 0:43:16] } 62... Kb7 { [%eval -2.72] [%clk 0:02:38] } 63. Qd7+ { [%eval -3.35] [%clk 0:43:34] } 63... Ka6 { [%eval -3.23] [%clk 0:02:00] } 64. Qc8+?! { [%eval -4.42] } { Inaccuracy. Qa4+ was best. } { [%clk 0:43:46] } 64... Ka5 { [%eval -4.46] [%clk 0:02:11] } 65. Qa8+ { [%eval -4.44] [%clk 0:42:56] } 65... Kb5 { [%eval -4.4] [%clk 0:02:26] } 66. Qd5+ { [%eval -5.03] [%clk 0:43:10] } 66... Qc5 { [%eval -5.12] [%clk 0:02:38] } 67. Qd7+ { [%eval -5.46] [%clk 0:43:31] } 67... Kc4 { [%eval -5.27] [%clk 0:02:48] } 68. Qe6+ { [%eval -6.15] [%clk 0:43:32] } 68... Kc3 { [%eval -6.0] [%clk 0:02:45] } 69. Qf7 { [%eval -6.07] [%clk 0:41:24] } 69... Bxf2 { [%eval -6.08] [%clk 0:02:47] } 70. Qf3+ { [%eval -6.32] [%clk 0:41:26] } 70... Qe3 { [%eval -6.42] [%clk 0:02:53] } 71. Qf6+ { [%eval -7.19] [%clk 0:41:42] } 71... Kb3 { [%eval -6.17] [%clk 0:02:30] } 72. Qe6+ { [%eval -6.84] [%clk 0:42:00] } 72... Kb2 { [%eval -6.97] [%clk 0:02:32] } 73. Qe5+ { [%eval -6.74] [%clk 0:42:14] } 73... Qc3 { [%eval -6.44] [%clk 0:02:30] } 74. Qf4 { [%eval -7.12] [%clk 0:42:37] } 74... Qc2 { [%eval -7.18] [%clk 0:02:11] } 75. Qf6+? { [%eval #-4] } { Checkmate is now unavoidable. Qf3 was best. } { [%clk 0:43:00] } 75... Bd4+ { [%eval #-3] [%clk 0:02:28] } 0-1