Event: WSTC
Site: Aktau, Kazakhstan
White: Derksen, Vadim
WhiteElo: 1442
Black: Chen, Michael
BlackElo: 1303
Result: 0-1
ECO: B90
Opening: Sicilian Defense: Najdorf Variation
Variant: Standard
TimeControl: 45 + 10

1. e4 { [%eval 0.36] [%clk 0:45:16] } 1... c5 { [%eval 0.32] [%clk 0:45:19] } 2. Nf3 { [%eval 0.0] [%clk 0:45:25] } 2... d6 { [%eval 0.0] [%clk 0:45:20] } 3. d4 { [%eval 0.25] [%clk 0:45:30] } 3... cxd4 { [%eval 0.13] [%clk 0:45:29] } 4. Nxd4 { [%eval 0.27] [%clk 0:45:39] } 4... Nf6 { [%eval 0.3] [%clk 0:45:37] } 5. Nc3 { [%eval 0.21] [%clk 0:45:46] } 5... a6 { [%eval 0.39] [%clk 0:45:44] } 6. a4 { [%eval 0.0] [%clk 0:45:31] } 6... e5 { [%eval 0.13] [%clk 0:45:35] } 7. Nb3 { [%eval 0.0] [%clk 0:45:15] } 7... Be7 { [%eval 0.13] [%clk 0:45:22] } 8. Be2 { [%eval 0.07] [%clk 0:44:30] } 8... Be6 { [%eval 0.32] [%clk 0:45:23] } 9. O-O { [%eval 0.16] [%clk 0:43:57] } 9... O-O { [%eval 0.28] [%clk 0:44:55] } 10. Be3 { [%eval 0.01] [%clk 0:42:06] } 10... Nc6 { [%eval -0.01] [%clk 0:43:41] } 11. f3?! { [%eval -0.96] } { Inaccuracy. Bf3 was best. } { [%clk 0:40:23] } 11... d5?! { [%eval -0.18] } { Inaccuracy. Nb4 was best. } { [%clk 0:41:16] } 12. exd5 { [%eval -0.18] [%clk 0:40:03] } 12... Nxd5 { [%eval 0.0] [%clk 0:41:23] } 13. Nxd5 { [%eval 0.0] [%clk 0:39:20] } 13... Qxd5 { [%eval 0.0] [%clk 0:41:26] } 14. Qxd5 { [%eval 0.0] [%clk 0:38:52] } 14... Bxd5 { [%eval 0.0] [%clk 0:41:34] } 15. Nc5 { [%eval -0.28] [%clk 0:37:28] } 15... Nb4 { [%eval -0.35] [%clk 0:38:57] } 16. Rac1 { [%eval -0.52] [%clk 0:36:27] } 16... Rac8 { [%eval -0.43] [%clk 0:36:46] } 17. Nd7 { [%eval -0.43] [%clk 0:33:29] } 17... Rfd8 { [%eval -0.14] [%clk 0:35:16] } 18. Nxe5 { [%eval -0.23] [%clk 0:29:09] } 18... Nxc2 { [%eval -0.14] [%clk 0:33:56] } 19. Bf2?! { [%eval -0.95] } { Inaccuracy. Bb6 was best. } { [%clk 0:28:38] } 19... Bf6?! { [%eval -0.05] } { Inaccuracy. Bg5 was best. } { [%clk 0:33:04] } 20. Nd3?? { [%eval -2.0] } { Blunder. f4 was best. } { [%clk 0:26:08] } 20... Nd4 { [%eval -1.99] [%clk 0:29:03] } 21. Bxd4 { [%eval -1.96] [%clk 0:20:38] } 21... Bxd4+ { [%eval -2.13] [%clk 0:28:49] } 22. Kh1 { [%eval -2.04] [%clk 0:20:47] } 22... Be3 { [%eval -1.5] [%clk 0:28:36] } 23. Rxc8 { [%eval -1.57] [%clk 0:15:11] } 23... Rxc8 { [%eval -1.68] [%clk 0:28:44] } 24. Rd1 { [%eval -2.03] [%clk 0:15:12] } 24... Bb3 { [%eval -1.96] [%clk 0:28:34] } 25. Ra1 { [%eval -1.81] [%clk 0:15:17] } 25... h6 { [%eval -1.75] [%clk 0:25:12] } 26. Ra3 { [%eval -1.61] [%clk 0:11:40] } 26... Bc2 { [%eval -1.21] [%clk 0:19:19] } 27. g3 { [%eval -1.0] [%clk 0:03:54] } 27... Bd4 { [%eval -0.91] [%clk 0:14:56] } 28. Kg2 { [%eval -0.91] [%clk 0:01:14] } 28... Re8 { [%eval -1.46] [%clk 0:13:48] } 29. Bf1? { [%eval -2.95] } { Mistake. Kf1 was best. } { [%clk 0:00:47] } 29... Re3 { [%eval -3.14] [%clk 0:13:36] } 30. b4?! { [%eval -4.41] } { Inaccuracy. f4 was best. } { [%clk 0:00:36] } 30... Bd1 { [%eval -4.52] [%clk 0:13:04] } 31. f4 { [%eval -4.52] [%clk 0:00:26] } 31... Bf3+ { [%eval -4.7] [%clk 0:11:40] } 32. Kh3 { [%eval -4.68] [%clk 0:00:35] } 32... Be4 { [%eval -4.4] [%clk 0:11:43] } 33. Rb3 { [%eval -4.55] [%clk 0:00:21] } 33... Bd5?? { [%eval -1.5] } { Blunder. h5 was best. } { [%clk 0:11:40] } 34. Ra3?? { [%eval -5.46] } { Blunder. Rb1 was best. } { [%clk 0:00:29] } 34... Bc4 { [%eval -4.66] [%clk 0:11:39] } 35. Kg2 { [%eval -5.44] [%clk 0:00:19] } 35... Bb2 { [%eval -5.3] [%clk 0:11:41] } 36. Nxb2 { [%eval -5.63] [%clk 0:00:19] } 36... Bxf1+ { [%eval -5.48] [%clk 0:11:49] } 37. Kxf1 { [%eval -5.59] [%clk 0:00:29] } 37... Rxa3 { [%eval -5.77] [%clk 0:11:58] } 38. b5 { [%eval -5.89] [%clk 0:00:18] } 38... Ra1+ { [%eval -6.0] [%clk 0:12:06] } 39. Ke2 { [%eval -5.91] [%clk 0:00:13] } 39... Ra2 { [%eval -5.89] [%clk 0:12:14] } 40. Kd3 { [%eval -6.2] [%clk 0:00:21] } 40... Rxb2 { [%eval -6.19] [%clk 0:12:23] } 41. Kc3 { [%eval -7.03] [%clk 0:00:30] } 41... Rxh2 { [%eval -7.26] [%clk 0:12:31] } 42. bxa6 { [%eval -9.34] [%clk 0:00:39] } 42... bxa6 { [%eval -9.25] [%clk 0:12:39] } 43. Kb4 { [%eval -34.57] [%clk 0:00:48] } 43... Rh3 { [%eval -34.62] [%clk 0:12:44] } 44. g4 { [%eval -33.71] [%clk 0:00:56] } 44... Rh4 { [%eval -37.19] [%clk 0:12:53] } 45. Ka5 { [%eval -37.36] [%clk 0:01:05] } 45... Rxg4 { [%eval -40.84] [%clk 0:13:02] } 46. Kxa6?! { [%eval #-24] } { Checkmate is now unavoidable. Kb4 was best. } { [%clk 0:01:14] } 46... Rxf4 { [%eval #-40] [%clk 0:13:10] } 47. a5 { [%eval #-17] [%clk 0:01:23] } 47... h5?! { [%eval -81.47] } { Lost forced checkmate sequence. Rb4 was best. } { [%clk 0:13:19] } 48. Kb7?! { [%eval #-14] } { Checkmate is now unavoidable. Kb5 was best. } { [%clk 0:01:31] } 48... Ra4 { [%eval #-15] [%clk 0:13:28] } 49. a6 { [%eval #-13] [%clk 0:01:41] } 49... Rxa6 { [%eval #-14] [%clk 0:13:37] } 50. Kxa6 { [%eval #-14] [%clk 0:01:49] } 50... h4 { [%eval #-13] [%clk 0:13:46] } 51. Kb5 { [%eval #-12] [%clk 0:01:58] } 51... h3 { [%eval #-11] [%clk 0:13:55] } 52. Kc5 { [%eval #-11] [%clk 0:02:06] } 52... h2 { [%eval #-10] [%clk 0:14:04] } 53. Kd6 { [%eval #-11] [%clk 0:02:15] } 53... h1=Q { [%eval #-9] [%clk 0:14:09] } 54. Ke7 { [%eval #-5] [%clk 0:02:23] } 54... Qe4+ { [%eval #-7] [%clk 0:14:16] } 55. Kd6 { [%eval #-7] [%clk 0:02:31] } 55... f5 { [%eval #-7] [%clk 0:14:25] } 56. Kd7 { [%eval #-7] [%clk 0:02:39] } 56... f4 { [%eval #-6] [%clk 0:14:34] } 57. Kd8 { [%eval #-5] [%clk 0:02:48] } 57... f3 { [%eval #-5] [%clk 0:14:43] } 58. Kc7 { [%eval #-5] [%clk 0:02:56] } 58... f2 { [%eval #-4] [%clk 0:14:52] } 59. Kd6 { [%eval #-4] [%clk 0:03:04] } 59... f1=Q { [%eval #-3] [%clk 0:14:50] } 60. Kc5 { [%eval #-3] [%clk 0:03:10] } 60... Qfc4+ { [%eval #-2] [%clk 0:14:59] } 61. Kd6 { [%eval #-1] [%clk 0:03:17] } 61... Qed5+ { [%eval #-1] [%clk 0:15:07] } 62. Ke7 { [%eval #-1] [%clk 0:03:26] } 62... Qc7+ { [%clk 0:15:13] } 63. Ke8 { [%clk 0:03:34] } 63... Qdd8# { [%clk 0:15:22] } 0-1