Event: Round 2: Koppenens, Oscar - Polzin, Gustav
Date: 2025-03-21
White: Koppenens, Oscar
WhiteElo: 1986
Black: Polzin, Gustav
BlackElo: 1965
Result: 0-1
ECO: B10
Opening: Caro-Kann Defense: Two Knights Attack
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:50:17] } 1... c6 { [%eval 0.23] [%clk 1:50:12] } 2. Nf3 { [%eval 0.17] [%clk 1:50:19] } 2... d5 { [%eval 0.24] [%clk 1:50:12] } 3. Nc3 { [%eval 0.16] [%clk 1:50:25] } 3... dxe4 { [%eval 0.16] [%clk 1:50:17] } 4. Nxe4 { [%eval 0.22] [%clk 1:50:31] } 4... Nf6 { [%eval 0.23] [%clk 1:50:23] } 5. Qe2 { [%eval 0.23] [%clk 1:50:37] } 5... Nxe4 { [%eval 0.24] [%clk 1:50:26] } 6. Qxe4 { [%eval 0.11] [%clk 1:50:42] } 6... Qa5 { [%eval 0.19] [%clk 1:50:31] } 7. b4 { [%eval 0.16] [%clk 1:49:00] } 7... Qf5 { [%eval 0.44] [%clk 1:50:35] } 8. Qe3 { [%eval 0.51] [%clk 1:37:35] } 8... Qe6 { [%eval 0.31] [%clk 1:50:28] } 9. Bb2 { [%eval 0.28] [%clk 1:37:11] } 9... f6 { [%eval 0.28] [%clk 1:50:10] } 10. d4 { [%eval 0.36] [%clk 1:36:35] } 10... Qxe3+ { [%eval 0.37] [%clk 1:48:04] } 11. fxe3 { [%eval 0.41] [%clk 1:35:37] } 11... Be6 { [%eval 0.57] [%clk 1:44:25] } 12. Bd3 { [%eval 0.51] [%clk 1:33:17] } 12... Nd7 { [%eval 0.76] [%clk 1:42:31] } 13. Kf2 { [%eval 0.37] [%clk 1:32:15] } 13... Bf7 { [%eval 0.41] [%clk 1:41:39] } 14. c4 { [%eval 0.27] [%clk 1:32:05] } 14... e6 { [%eval 0.55] [%clk 1:40:07] } 15. a3 { [%eval 0.41] [%clk 1:32:09] } 15... Bd6 { [%eval 0.4] [%clk 1:40:12] } 16. Rhe1 { [%eval 0.29] [%clk 1:31:46] } 16... O-O { [%eval 0.25] [%clk 1:39:18] } 17. e4 { [%eval 0.18] [%clk 1:31:13] } 17... Rad8 { [%eval 0.36] [%clk 1:38:02] } 18. c5 { [%eval 0.39] [%clk 1:29:55] } 18... Bc7 { [%eval 0.34] [%clk 1:37:49] } 19. Bc4 { [%eval 0.37] [%clk 1:29:43] } 19... b6 { [%eval 0.33] [%clk 1:35:37] } 20. Red1 { [%eval 0.24] [%clk 1:27:59] } 20... bxc5 { [%eval 0.52] [%clk 1:34:48] } 21. dxc5 { [%eval 0.5] [%clk 1:27:55] } 21... e5 { [%eval 0.54] [%clk 1:32:38] } 22. Bxf7+ { [%eval 0.26] [%clk 1:27:05] } 22... Kxf7 { [%eval 0.29] [%clk 1:32:25] } 23. Nd2 { [%eval -0.14] [%clk 1:26:15] } 23... Ke6 { [%eval 0.19] [%clk 1:30:18] } 24. Ke3 { [%eval -0.02] [%clk 1:24:42] } 24... g6 { [%eval -0.04] [%clk 1:29:30] } 25. g4 { [%eval -0.06] [%clk 1:24:05] } 25... f5 { [%eval 0.0] [%clk 1:28:13] } 26. gxf5+ { [%eval -0.03] [%clk 1:24:02] } 26... gxf5 { [%eval -0.07] [%clk 1:28:17] } 27. exf5+ { [%eval -0.13] [%clk 1:24:03] } 27... Rxf5 { [%eval -0.11] [%clk 1:28:06] } 28. Rf1 { [%eval -0.11] [%clk 1:23:26] } 28... Rh5 { [%eval -0.27] [%clk 1:24:56] } 29. Rf2?? { [%eval -3.39] } { Blunder. Ne4 was best. } { [%clk 1:20:52] } 29... Nf6 { [%eval -3.88] [%clk 1:24:44] } 30. Rg1 { [%eval -4.33] [%clk 1:14:20] } 30... Nd5+ { [%eval -4.17] [%clk 1:16:59] } 31. Ke2 { [%eval -4.42] [%clk 1:03:06] } 31... Nf4+ { [%eval -4.29] [%clk 1:16:57] } 32. Rxf4 { [%eval -5.28] [%clk 1:03:10] } 32... exf4? { [%eval -3.33] } { Mistake. Rxh2+ was best. } { [%clk 1:16:49] } 33. Nf3 { [%eval -3.25] [%clk 1:03:06] } 33... Kd7 { [%eval -2.87] [%clk 1:13:29] } 34. Rg7+ { [%eval -2.9] [%clk 1:02:15] } 34... Kc8 { [%eval -2.93] [%clk 1:12:49] } 35. a4?! { [%eval -4.25] } { Inaccuracy. Re7 was best. } { [%clk 1:00:13] } 35... Rh6? { [%eval -2.58] } { Mistake. a5 was best. } { [%clk 1:08:30] } 36. Kf2?! { [%eval -3.4] } { Inaccuracy. Re7 was best. } { [%clk 0:58:38] } 36... Rd7 { [%eval -3.14] [%clk 1:08:07] } 37. Rg8+ { [%eval -3.61] [%clk 0:58:08] } 37... Kb7 { [%eval -3.63] [%clk 1:08:11] } 38. b5 { [%eval -4.12] [%clk 0:57:58] } 38... Rg6?? { [%eval -0.92] } { Blunder. Rd5 was best. } { [%clk 1:07:36] } 39. Rf8?! { [%eval -1.88] } { Inaccuracy. Re8 was best. } { [%clk 0:56:58] } 39... Rh6 { [%eval -1.88] [%clk 0:54:37] } 40. Bc1?? { [%eval -4.31] } { Blunder. h4 was best. } { [%clk 0:49:55] } 40... Rh5 { [%eval -4.31] [%clk 0:54:04] } 41. Ba3 { [%eval -4.68] [%clk 0:47:39] } 41... Rd3 { [%eval -4.65] [%clk 0:52:01] } 42. Bb4 { [%eval -4.99] [%clk 0:43:46] } 42... Rh3 { [%eval -5.0] [%clk 0:50:56] } 43. bxc6+ { [%eval -5.19] [%clk 0:43:43] } 43... Ka6 { [%eval -4.54] [%clk 0:49:28] } 44. Ne1?! { [%eval -5.92] } { Inaccuracy. Ng1 was best. } { [%clk 0:42:41] } 44... Rb3 { [%eval -5.81] [%clk 0:47:48] } 45. Rf7 { [%eval -5.9] [%clk 0:38:24] } 45... Rb2+ { [%eval -5.75] [%clk 0:46:00] } 46. Kg1 { [%eval -6.1] [%clk 0:37:51] } 46... Rxb4 { [%eval -6.08] [%clk 0:42:43] } 47. Rxc7 { [%eval -5.88] [%clk 0:37:26] } 47... Re3 { [%eval -5.66] [%clk 0:41:21] } 48. Ng2 { [%eval -5.57] [%clk 0:35:15] } 48... Re2 { [%eval -5.82] [%clk 0:41:01] } 49. Rb7 { [%eval -5.96] [%clk 0:33:52] } 49... Rxb7 { [%eval -5.84] [%clk 0:40:43] } 50. cxb7 { [%eval -5.67] [%clk 0:33:49] } 50... Kxb7 { [%eval -5.68] [%clk 0:40:49] } 51. Nxf4 { [%eval -5.91] [%clk 0:33:54] } 51... Ra2 { [%eval -5.87] [%clk 0:40:49] } 52. Nd3 { [%eval -6.0] [%clk 0:31:42] } 52... a5 { [%eval -5.84] [%clk 0:40:37] } 53. h4 { [%eval -6.43] [%clk 0:31:48] } 53... Kc6 { [%eval -6.35] [%clk 0:40:33] } 54. h5 { [%eval -6.48] [%clk 0:31:35] } 54... Rxa4 { [%eval -6.97] [%clk 0:40:28] } 55. Kf2 { [%eval -7.04] [%clk 0:31:19] } 55... Rh4 { [%eval -6.95] [%clk 0:40:26] } 56. Ne5+ { [%eval -6.75] [%clk 0:31:09] } 56... Kxc5 { [%eval -6.77] [%clk 0:40:26] } 57. Nd7+ { [%eval -7.85] [%clk 0:31:04] } 57... Kb4 { [%eval -7.01] [%clk 0:40:23] } 58. Nf6? { [%eval #-11] } { Checkmate is now unavoidable. Kg3 was best. } { [%clk 0:31:07] } 58... a4?! { [%eval -26.84] } { Lost forced checkmate sequence. Rf4+ was best. } { [%clk 0:40:24] } 59. Kg3?! { [%eval #-19] } { Checkmate is now unavoidable. Nd5+ was best. } { [%clk 0:31:07] } 59... Rd4 { [%eval -9.38] [%clk 0:40:07] } 60. Nxh7? { [%eval #-13] } { Checkmate is now unavoidable. Ng4 was best. } { [%clk 0:30:54] } 60... a3 { [%eval #-12] [%clk 0:40:09] } 0-1