Event: Round 4: Mattenberger, Matthias - Collin, Moritz Valentin
Date: 2025-04-21
White: Mattenberger, Matthias
WhiteTitle: FM
WhiteElo: 2279
Black: Collin, Moritz Valentin
BlackTitle: FM
BlackElo: 2303
Result: 0-1
ECO: E26
Opening: Nimzo-Indian Defense: Sämisch Variation, O'Kelly Variation
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:31] } 1... Nf6 { [%eval 0.19] [%clk 1:30:53] } 2. c4 { [%eval 0.18] [%clk 1:30:52] } 2... e6 { [%eval 0.14] [%clk 1:31:18] } 3. Nc3 { [%eval 0.09] [%clk 1:31:14] } 3... Bb4 { [%eval 0.09] [%clk 1:31:40] } 4. a3 { [%eval -0.11] [%clk 1:31:39] } 4... Bxc3+ { [%eval 0.0] [%clk 1:32:05] } 5. bxc3 { [%eval -0.07] [%clk 1:32:04] } 5... c5 { [%eval 0.0] [%clk 1:32:26] } 6. e3 { [%eval 0.0] [%clk 1:32:24] } 6... b6 { [%eval 0.0] [%clk 1:32:19] } 7. Bd3 { [%eval 0.0] [%clk 1:32:40] } 7... Bb7 { [%eval 0.0] [%clk 1:32:39] } 8. f3 { [%eval -0.01] [%clk 1:32:52] } 8... O-O { [%eval 0.08] [%clk 1:32:48] } 9. e4 { [%eval 0.02] [%clk 1:32:47] } 9... Ne8 { [%eval 0.24] [%clk 1:31:08] } 10. Ne2 { [%eval 0.13] [%clk 1:32:26] } 10... Nc6 { [%eval 0.06] [%clk 1:31:02] } 11. O-O { [%eval 0.13] [%clk 1:32:26] } 11... Na5 { [%eval 0.15] [%clk 1:26:23] } 12. f4?! { [%eval -0.74] } { Inaccuracy. dxc5 was best. } { [%clk 1:31:55] } 12... f5 { [%eval -0.77] [%clk 1:25:51] } 13. exf5 { [%eval -0.96] [%clk 1:28:04] } 13... exf5 { [%eval -0.92] [%clk 1:26:09] } 14. dxc5 { [%eval -0.88] [%clk 1:24:54] } 14... bxc5 { [%eval -0.89] [%clk 1:26:31] } 15. Ng3 { [%eval -1.08] [%clk 1:23:50] } 15... Nd6 { [%eval -0.93] [%clk 1:16:51] } 16. Rb1 { [%eval -1.33] [%clk 1:12:08] } 16... Qc7 { [%eval -1.2] [%clk 1:04:36] } 17. Qh5?! { [%eval -1.98] } { Inaccuracy. Re1 was best. } { [%clk 1:01:52] } 17... g6 { [%eval -2.03] [%clk 1:03:13] } 18. Qg5 { [%eval -2.56] [%clk 1:01:08] } 18... Rae8 { [%eval -2.51] [%clk 0:55:46] } 19. Rb2 { [%eval -2.7] [%clk 0:55:56] } 19... Naxc4 { [%eval -2.7] [%clk 0:47:08] } 20. Re2 { [%eval -2.66] [%clk 0:55:24] } 20... Rxe2 { [%eval -2.68] [%clk 0:35:48] } 21. Bxe2 { [%eval -2.56] [%clk 0:55:14] } 21... Bd5?! { [%eval -1.85] } { Inaccuracy. Qa5 was best. } { [%clk 0:24:04] } 22. Rd1 { [%eval -1.73] [%clk 0:51:53] } 22... Be6 { [%eval -1.5] [%clk 0:24:24] } 23. h4 { [%eval -1.66] [%clk 0:50:07] } 23... Qd8 { [%eval -1.61] [%clk 0:15:19] } 24. Bf3?! { [%eval -2.57] } { Inaccuracy. h5 was best. } { [%clk 0:47:52] } 24... Nf7 { [%eval -2.54] [%clk 0:14:23] } 25. Qxd8 { [%eval -2.43] [%clk 0:47:49] } 25... Rxd8 { [%eval -2.82] [%clk 0:14:43] } 26. Nf1 { [%eval -2.67] [%clk 0:44:30] } 26... Rb8 { [%eval -2.67] [%clk 0:12:28] } 27. Be3 { [%eval -2.51] [%clk 0:41:51] } 27... d6?! { [%eval -1.29] } { Inaccuracy. Nxe3 was best. } { [%clk 0:10:13] } 28. Re1 { [%eval -1.55] [%clk 0:41:09] } 28... Nd8 { [%eval -1.63] [%clk 0:08:12] } 29. Bf2? { [%eval -3.11] } { Mistake. h5 was best. } { [%clk 0:40:29] } 29... Kf7?? { [%eval -0.84] } { Blunder. h5 was best. } { [%clk 0:08:19] } 30. a4?? { [%eval -3.32] } { Blunder. h5 was best. } { [%clk 0:40:05] } 30... h5 { [%eval -3.48] [%clk 0:07:05] } 31. Rd1 { [%eval -3.62] [%clk 0:39:10] } 31... Ke7 { [%eval -3.45] [%clk 0:06:19] } 32. Re1 { [%eval -3.67] [%clk 0:39:13] } 32... Rb3 { [%eval -3.76] [%clk 0:04:40] } 33. Ne3 { [%eval -4.33] [%clk 0:38:36] } 33... Nxe3 { [%eval -4.25] [%clk 0:01:48] } 34. Rxe3 { [%eval -4.31] [%clk 0:38:38] } 34... Ra3 { [%eval -4.27] [%clk 0:01:45] } 35. Bd1 { [%eval -4.28] [%clk 0:38:08] } 35... Ra1 { [%eval -4.63] [%clk 0:01:50] } 36. Re1 { [%eval -4.56] [%clk 0:38:28] } 36... Rc1 { [%eval -4.19] [%clk 0:01:50] } 37. Bf3 { [%eval -4.6] [%clk 0:38:30] } 37... Rxc3 { [%eval -4.31] [%clk 0:01:58] } 38. Rb1 { [%eval -4.52] [%clk 0:38:11] } 38... Rb3 { [%eval -4.52] [%clk 0:01:13] } 39. Re1 { [%eval -4.86] [%clk 0:38:30] } 39... Ra3 { [%eval -4.8] [%clk 0:01:20] } 40. Rb1 { [%eval -4.9] [%clk 0:38:40] } 40... Rxa4 { [%eval -4.96] [%clk 0:01:28] } 41. Rb8 { [%eval -5.23] [%clk 0:38:45] } 41... Ra1+ { [%eval -5.28] [%clk 0:21:32] } 42. Kh2 { [%eval -5.19] [%clk 1:09:07] } 42... Kd7 { [%eval -5.0] [%clk 0:17:36] } 0-1