Event: Round 3: Koppenens, Oscar - Ngangbam, Chingthang
Date: 2025-04-28
White: Koppenens, Oscar
WhiteElo: 2024
Black: Ngangbam, Chingthang
BlackElo: 1853
Result: 1-0
ECO: B59
Opening: Sicilian Defense: Boleslavsky Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:59] } 1... c5 { [%eval 0.25] [%clk 1:30:55] } 2. Nf3 { [%eval 0.2] [%clk 1:31:26] } 2... Nc6 { [%eval 0.25] [%clk 1:31:18] } 3. d4 { [%eval 0.27] [%clk 1:31:52] } 3... cxd4 { [%eval 0.35] [%clk 1:31:41] } 4. Nxd4 { [%eval 0.21] [%clk 1:32:18] } 4... Nf6 { [%eval 0.19] [%clk 1:32:03] } 5. Nc3 { [%eval 0.26] [%clk 1:32:45] } 5... d6 { [%eval 0.3] [%clk 1:32:28] } 6. Be2 { [%eval 0.17] [%clk 1:32:30] } 6... e5 { [%eval 0.17] [%clk 1:32:48] } 7. Nb3 { [%eval 0.14] [%clk 1:32:41] } 7... Be6 { [%eval 0.21] [%clk 1:32:50] } 8. Be3 { [%eval 0.07] [%clk 1:30:36] } 8... Be7 { [%eval 0.0] [%clk 1:30:19] } 9. Bf3 { [%eval 0.15] [%clk 1:27:04] } 9... a5 { [%eval 0.38] [%clk 1:28:25] } 10. Nd5 { [%eval 0.27] [%clk 1:25:53] } 10... Bxd5 { [%eval 0.33] [%clk 1:28:27] } 11. exd5 { [%eval 0.6] [%clk 1:26:16] } 11... Nb4 { [%eval 0.4] [%clk 1:28:48] } 12. a3 { [%eval 0.35] [%clk 1:24:35] } 12... Na6 { [%eval 0.47] [%clk 1:29:11] } 13. c4?! { [%eval -0.37] } { Inaccuracy. Qd3 was best. } { [%clk 1:21:21] } 13... b6?! { [%eval 0.23] } { Inaccuracy. Nd7 was best. } { [%clk 1:26:37] } 14. Nd2 { [%eval 0.31] [%clk 1:20:48] } 14... Nd7 { [%eval 0.29] [%clk 1:26:08] } 15. O-O?! { [%eval -0.34] } { Inaccuracy. g4 was best. } { [%clk 1:14:24] } 15... f5 { [%eval -0.38] [%clk 1:25:41] } 16. g3 { [%eval -0.37] [%clk 1:14:21] } 16... O-O { [%eval -0.36] [%clk 1:25:37] } 17. Rb1 { [%eval -0.73] [%clk 1:12:33] } 17... g5 { [%eval -0.72] [%clk 1:18:38] } 18. Nb3 { [%eval -0.89] [%clk 1:11:58] } 18... a4 { [%eval -0.95] [%clk 1:18:03] } 19. Nc1 { [%eval -0.97] [%clk 1:11:58] } 19... f4?! { [%eval -0.37] } { Inaccuracy. e4 was best. } { [%clk 1:17:32] } 20. Bd2 { [%eval -0.39] [%clk 1:10:36] } 20... Nac5 { [%eval -0.24] [%clk 1:17:43] } 21. Qc2 { [%eval -0.45] [%clk 1:10:07] } 21... Nf6 { [%eval -0.62] [%clk 1:17:15] } 22. Bg2 { [%eval -0.51] [%clk 1:10:04] } 22... Qe8 { [%eval -0.48] [%clk 1:15:04] } 23. Bc3? { [%eval -1.64] } { Mistake. b4 was best. } { [%clk 1:07:00] } 23... Qh5 { [%eval -1.87] [%clk 1:05:57] } 24. f3 { [%eval -1.75] [%clk 1:05:48] } 24... Nfd7?! { [%eval -1.07] } { Inaccuracy. b5 was best. } { [%clk 1:01:04] } 25. Qd1?! { [%eval -2.15] } { Inaccuracy. b4 was best. } { [%clk 0:57:29] } 25... Rf6 { [%eval -1.75] [%clk 0:59:52] } 26. g4?! { [%eval -2.45] } { Inaccuracy. b4 was best. } { [%clk 0:56:09] } 26... Qg6 { [%eval -2.3] [%clk 0:59:54] } 27. Na2 { [%eval -2.16] [%clk 0:53:26] } 27... h5 { [%eval -2.09] [%clk 0:53:44] } 28. h3?! { [%eval -3.38] } { Inaccuracy. Bh3 was best. } { [%clk 0:52:22] } 28... hxg4 { [%eval -3.24] [%clk 0:53:04] } 29. hxg4 { [%eval -3.01] [%clk 0:52:33] } 29... Rf7 { [%eval -2.91] [%clk 0:35:31] } 30. Nb4 { [%eval -2.88] [%clk 0:50:26] } 30... Qh7 { [%eval -2.29] [%clk 0:33:05] } 31. Qe2?! { [%eval -3.06] } { Inaccuracy. Kf2 was best. } { [%clk 0:47:44] } 31... Qh4 { [%eval -2.53] [%clk 0:32:02] } 32. Be1 { [%eval -2.86] [%clk 0:47:41] } 32... Qh6 { [%eval -2.83] [%clk 0:32:12] } 33. Nc6 { [%eval -2.79] [%clk 0:44:19] } 33... Rh7 { [%eval -2.65] [%clk 0:23:53] } 34. Qc2 { [%eval -3.15] [%clk 0:42:57] } 34... e4 { [%eval -3.23] [%clk 0:17:21] } 35. fxe4?? { [%eval -7.64] } { Blunder. Kf2 was best. } { [%clk 0:37:30] } 35... Qh2+ { [%eval -7.14] [%clk 0:16:29] } 36. Kf2 { [%eval -6.99] [%clk 0:37:37] } 36... Ne5? { [%eval -3.62] } { Mistake. f3 was best. } { [%clk 0:14:21] } 37. Nxe5 { [%eval -3.86] [%clk 0:36:42] } 37... dxe5 { [%eval -3.54] [%clk 0:14:44] } 38. Rd1? { [%eval -6.96] } { Mistake. Rh1 was best. } { [%clk 0:30:01] } 38... Nb7?? { [%eval -1.71] } { Blunder. Qg3+ was best. } { [%clk 0:10:44] } 39. Bb4?? { [%eval -6.04] } { Blunder. Rh1 was best. } { [%clk 0:29:30] } 39... Qg3+ { [%eval -6.11] [%clk 0:10:16] } 40. Kg1 { [%eval -5.8] [%clk 0:29:30] } 40... Kf7?? { [%eval -1.8] } { Blunder. Qh2+ was best. } { [%clk 0:09:48] } 41. Rf3? { [%eval -3.86] } { Mistake. Qc3 was best. } { [%clk 0:28:37] } 41... Qxg4 { [%eval -3.72] [%clk 0:05:04] } 42. Bxe7? { [%eval -6.33] } { Mistake. Qe2 was best. } { [%clk 0:28:46] } 42... Kxe7?? { [%eval -1.58] } { Blunder. Rah8 was best. } { [%clk 0:05:24] } 43. d6+? { [%eval -3.45] } { Mistake. Qc3 was best. } { [%clk 0:28:14] } 43... Nxd6 { [%eval -3.8] [%clk 0:05:03] } 44. c5 { [%eval -4.29] [%clk 0:28:22] } 44... Nb5 { [%eval -4.44] [%clk 0:02:46] } 45. cxb6 { [%eval -4.51] [%clk 0:28:15] } 45... Nd4?? { [%eval 4.97] } { Blunder. Rc8 was best. } { [%clk 0:02:03] } 46. Rxd4 { [%eval 4.85] [%clk 0:28:18] } 46... exd4 { [%eval 3.9] [%clk 0:02:19] } 47. b7 { [%eval 3.87] [%clk 0:28:32] } 47... Rd8 { [%eval 4.62] [%clk 0:01:18] } 48. Qc7+ { [%eval 3.88] [%clk 0:27:43] } 48... Qd7 { [%eval 3.92] [%clk 0:01:29] } 49. b8=Q { [%eval 3.85] [%clk 0:27:48] } 49... Rxb8 { [%eval 3.93] [%clk 0:01:53] } 50. Qxb8 { [%eval 3.54] [%clk 0:28:11] } 50... d3 { [%eval 3.66] [%clk 0:00:35] } 51. Qb4+ { [%eval 3.65] [%clk 0:28:21] } 51... Ke8 { [%eval 4.55] [%clk 0:00:46] } 52. Qc4 { [%eval 4.29] [%clk 0:27:18] } 52... Qa7+? { [%eval 7.22] } { Mistake. Kf8 was best. } { [%clk 0:00:35] } 53. Kf1 { [%eval 6.85] [%clk 0:27:40] } 53... d2?? { [%eval #21] } { Checkmate is now unavoidable. Rg7 was best. } { [%clk 0:00:56] } 54. Qg8+ { [%eval #20] [%clk 0:27:56] } 54... Ke7 { [%eval #21] [%clk 0:01:12] } 55. Qxh7+ { [%eval 29.49] [%clk 0:28:20] } 55... Kd8?! { [%eval #6] } { Checkmate is now unavoidable. Kf8 was best. } { [%clk 0:01:12] } 56. Rd3+ { [%eval #5] [%clk 0:28:37] } 1-0