Event: Norwegian Championship 2021
Site: Oslo, Norway
Date: 2021-07-10
White: Ostenstad, Berge
WhiteTitle: GM
WhiteElo: 2451
Black: Urkedal, Frode Olav Olsen
BlackTitle: GM
BlackElo: 2566
Result: 0-1
ECO: D45
Opening: Semi-Slav Defense: Stoltz Variation
Variant: Standard
TimeControl: 40/5400+30:1800+30

1. d4 { [%eval 0.0] [%clk 1:30:58] } 1... Nf6 { [%eval 0.19] [%clk 1:30:51] } 2. c4 { [%eval 0.11] [%clk 1:31:22] } 2... e6 { [%eval 0.39] [%clk 1:31:18] } 3. Nf3 { [%eval 0.0] [%clk 1:31:45] } 3... d5 { [%eval 0.2] [%clk 1:31:42] } 4. Nc3 { [%eval 0.0] [%clk 1:32:08] } 4... c6 { [%eval 0.16] [%clk 1:32:08] } 5. e3 { [%eval 0.01] [%clk 1:32:31] } 5... Nbd7 { [%eval 0.2] [%clk 1:32:33] } 6. Qc2 { [%eval 0.05] [%clk 1:32:58] } 6... b6 { [%eval 0.36] [%clk 1:32:46] } 7. Be2 { [%eval 0.23] [%clk 1:27:39] } 7... Bb7 { [%eval 0.25] [%clk 1:32:50] } 8. O-O { [%eval 0.37] [%clk 1:20:20] } 8... dxc4 { [%eval 0.21] [%clk 1:33:00] } 9. Bxc4 { [%eval 0.29] [%clk 1:20:34] } 9... a6 { [%eval 0.26] [%clk 1:33:27] } 10. a3 { [%eval -0.13] [%clk 1:14:06] } 10... c5 { [%eval -0.04] [%clk 1:29:51] } 11. Rd1 { [%eval -0.03] [%clk 1:09:31] } 11... b5 { [%eval 0.0] [%clk 1:28:54] } 12. Be2 { [%eval -0.25] [%clk 1:08:25] } 12... Rc8 { [%eval -0.16] [%clk 1:26:38] } 13. dxc5 { [%eval -0.25] [%clk 1:02:41] } 13... Bxc5 { [%eval -0.16] [%clk 1:26:54] } 14. b4 { [%eval -0.25] [%clk 1:02:53] } 14... Be7 { [%eval -0.08] [%clk 1:26:16] } 15. Bb2 { [%eval -0.18] [%clk 0:59:35] } 15... O-O { [%eval -0.1] [%clk 1:25:24] } 16. Qb3 { [%eval -0.07] [%clk 0:52:17] } 16... Qb6 { [%eval -0.13] [%clk 1:24:43] } 17. Rac1 { [%eval -0.12] [%clk 0:51:52] } 17... Rfd8 { [%eval -0.25] [%clk 1:21:17] } 18. h3 { [%eval -0.07] [%clk 0:49:24] } 18... h6 { [%eval -0.17] [%clk 1:20:34] } 19. Qa2 { [%eval -0.13] [%clk 0:44:31] } 19... Nf8 { [%eval -0.08] [%clk 1:05:46] } 20. Qa1 { [%eval -0.03] [%clk 0:41:51] } 20... Ng6 { [%eval 0.0] [%clk 1:04:17] } 21. Rxd8+ { [%eval -0.01] [%clk 0:41:35] } 21... Rxd8 { [%eval -0.01] [%clk 1:04:39] } 22. Rd1 { [%eval -0.17] [%clk 0:41:59] } 22... Rc8 { [%eval -0.01] [%clk 1:04:36] } 23. Rc1 { [%eval -0.08] [%clk 0:35:41] } 23... Bf8 { [%eval 0.0] [%clk 0:55:49] } 24. Nb1 { [%eval -0.47] [%clk 0:28:33] } 24... Rxc1+ { [%eval -0.44] [%clk 0:55:38] } 25. Bxc1 { [%eval -0.3] [%clk 0:29:00] } 25... Bxf3 { [%eval -0.34] [%clk 0:45:52] } 26. Bxf3 { [%eval -0.35] [%clk 0:28:50] } 26... Nh4 { [%eval -0.45] [%clk 0:46:17] } 27. Nd2 { [%eval -0.27] [%clk 0:28:59] } 27... a5 { [%eval -0.33] [%clk 0:45:21] } 28. bxa5 { [%eval -0.48] [%clk 0:25:02] } 28... Nxf3+ { [%eval -0.55] [%clk 0:45:35] } 29. Nxf3 { [%eval -0.73] [%clk 0:25:21] } 29... Qxa5 { [%eval -0.44] [%clk 0:46:01] } 30. Qb1 { [%eval -0.57] [%clk 0:22:33] } 30... Qa4 { [%eval -0.55] [%clk 0:45:17] } 31. Qd3 { [%eval -0.77] [%clk 0:22:26] } 31... Ne4 { [%eval -0.87] [%clk 0:41:57] } 32. Nd4 { [%eval -0.83] [%clk 0:20:01] } 32... Nd6 { [%eval -0.74] [%clk 0:41:29] } 33. Nc2 { [%eval -0.84] [%clk 0:07:18] } 33... Nc4 { [%eval -0.66] [%clk 0:40:50] } 34. f3 { [%eval -1.16] [%clk 0:06:26] } 34... Qa5 { [%eval -1.08] [%clk 0:36:38] } 35. Kf1 { [%eval -1.06] [%clk 0:06:11] } 35... Bc5 { [%eval -0.94] [%clk 0:34:17] } 36. Ke2 { [%eval -0.99] [%clk 0:05:06] } 36... Qa6 { [%eval -0.91] [%clk 0:27:58] } 37. Qd8+ { [%eval -1.05] [%clk 0:04:16] } 37... Kh7 { [%eval -0.85] [%clk 0:28:03] } 38. Qd3+ { [%eval -0.75] [%clk 0:04:14] } 38... f5 { [%eval -0.34] [%clk 0:28:23] } 39. Kf2 { [%eval -0.47] [%clk 0:02:38] } 39... Qa7 { [%eval -0.27] [%clk 0:24:36] } 40. Kf1 { [%eval -0.4] [%clk 0:02:04] } 40... Qc7 { [%eval -0.43] [%clk 0:14:45] } 41. a4?? { [%eval -3.04] } { Blunder. Nd4 was best. } { [%clk 0:19:23] } 41... Qh2 { [%eval -2.94] [%clk 0:43:38] } 42. Kf2?! { [%eval -3.9] } { Inaccuracy. axb5 was best. } { [%clk 0:19:27] } 42... Be7 { [%eval -4.03] [%clk 0:41:58] } 43. Qf1 { [%eval -4.81] [%clk 0:12:43] } 43... Bh4+ { [%eval -4.61] [%clk 0:41:45] } 44. Ke2 { [%eval -4.84] [%clk 0:13:11] } 44... bxa4 { [%eval -4.17] [%clk 0:41:51] } 45. f4 { [%eval -3.98] [%clk 0:13:08] } 45... Nd6 { [%eval -4.04] [%clk 0:39:40] } 46. Nd4 { [%eval -4.59] [%clk 0:12:41] } 46... Ne4 { [%eval -4.38] [%clk 0:40:04] } 47. Kd3 { [%eval -4.3] [%clk 0:12:55] } 47... Qg3 { [%eval -3.7] [%clk 0:26:35] } 48. Nxe6 { [%eval -3.76] [%clk 0:12:06] } 48... Be7 { [%eval -4.0] [%clk 0:26:53] } 49. Kc2 { [%eval -4.13] [%clk 0:09:46] } 49... Qg6 { [%eval -4.14] [%clk 0:27:14] } 50. Nd4 { [%eval -4.13] [%clk 0:09:51] } 50... Bc5 { [%eval -4.16] [%clk 0:26:21] } 51. Nb5? { [%eval -7.61] } { Mistake. Bb2 was best. } { [%clk 0:08:22] } 51... Qe6 { [%eval -7.34] [%clk 0:24:17] } 52. Qd3 { [%eval -9.31] [%clk 0:07:36] } 52... Nf2 { [%eval -9.05] [%clk 0:24:44] } 0-1