Event: Landsturneringen 2025
Site: Quality Hotel Edvard Grieg,, Bergen
Date: 2025-07-11
White: Kosberg, Ivar
WhiteElo: 1797
Black: Opseth, Oliver
BlackElo: 1936
Result: 0-1
ECO: B20
Opening: Sicilian Defense
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:29:31] } 1... c5 { [%eval 0.25] [%clk 1:06:56] } 2. d3 { [%eval -0.07] [%clk 1:29:44] } 2... Nc6 { [%eval 0.0] [%clk 1:05:47] } 3. g3 { [%eval 0.0] [%clk 1:29:55] } 3... d5 { [%eval 0.0] [%clk 1:03:43] } 4. Nd2 { [%eval -0.41] [%clk 1:30:02] } 4... Nf6 { [%eval -0.22] [%clk 1:02:41] } 5. Bg2 { [%eval -0.3] [%clk 1:29:54] } 5... e5 { [%eval -0.21] [%clk 0:58:56] } 6. exd5 { [%eval -0.33] [%clk 1:25:00] } 6... Nxd5 { [%eval -0.4] [%clk 0:59:01] } 7. Ngf3 { [%eval -0.49] [%clk 1:17:12] } 7... Bg4 { [%eval -0.47] [%clk 0:55:28] } 8. c3 { [%eval -0.64] [%clk 1:14:49] } 8... Qd7 { [%eval -0.76] [%clk 0:51:54] } 9. O-O { [%eval -0.81] [%clk 1:12:57] } 9... Be7 { [%eval -0.64] [%clk 0:51:40] } 10. Re1 { [%eval -0.79] [%clk 1:09:46] } 10... O-O-O { [%eval -0.66] [%clk 0:49:12] } 11. Qb3 { [%eval -0.8] [%clk 1:08:32] } 11... f6 { [%eval -0.81] [%clk 0:48:15] } 12. d4 { [%eval -0.71] [%clk 1:06:09] } 12... h5? { [%eval 0.57] } { Mistake. exd4 was best. } { [%clk 0:45:02] } 13. c4 { [%eval 0.41] [%clk 1:02:40] } 13... Nb6? { [%eval 1.81] } { Mistake. Ndb4 was best. } { [%clk 0:44:59] } 14. d5 { [%eval 1.7] [%clk 1:01:08] } 14... Nd4 { [%eval 1.88] [%clk 0:43:11] } 15. Nxd4 { [%eval 1.83] [%clk 1:01:17] } 15... exd4? { [%eval 3.34] } { Mistake. cxd4 was best. } { [%clk 0:42:32] } 16. Ne4?! { [%eval 2.5] } { Inaccuracy. a4 was best. } { [%clk 0:53:32] } 16... Qa4 { [%eval 2.59] [%clk 0:38:11] } 17. Qxa4?! { [%eval 1.81] } { Inaccuracy. Bf4 was best. } { [%clk 0:49:08] } 17... Nxa4 { [%eval 1.92] [%clk 0:38:38] } 18. b3 { [%eval 1.8] [%clk 0:49:26] } 18... Nb6 { [%eval 1.8] [%clk 0:38:21] } 19. Ba3?! { [%eval 1.18] } { Inaccuracy. Bf4 was best. } { [%clk 0:47:44] } 19... Nd7 { [%eval 1.2] [%clk 0:38:18] } 20. d6 { [%eval 1.32] [%clk 0:43:04] } 20... Bf8 { [%eval 1.1] [%clk 0:38:47] } 21. Nxc5?? { [%eval -1.34] } { Blunder. b4 was best. } 21... Nxc5? { [%eval -0.01] } { Mistake. Bxd6 was best. } { [%clk 0:36:23] } 22. Bxc5 { [%eval 0.0] [%clk 0:45:40] } 22... Bxd6 { [%eval 0.0] [%clk 0:35:38] } 23. Bxd6 { [%eval 0.0] [%clk 0:39:06] } 23... Rxd6 { [%eval 0.0] [%clk 0:36:04] } 24. h3 { [%eval 0.06] [%clk 0:39:17] } 24... Bf5 { [%eval 0.12] [%clk 0:36:07] } 25. Rad1 { [%eval 0.11] [%clk 0:39:32] } 25... Rhd8 { [%eval 0.07] [%clk 0:29:07] } 26. Rd2 { [%eval -0.09] [%clk 0:38:02] } 26... a5 { [%eval 0.11] [%clk 0:23:27] } 27. h4 { [%eval 0.0] [%clk 0:33:29] } 27... Kc7 { [%eval 0.0] [%clk 0:22:13] } 28. Bd5 { [%eval 0.0] [%clk 0:32:54] } 28... d3 { [%eval 0.0] [%clk 0:19:04] } 29. f3 { [%eval 0.0] [%clk 0:32:19] } 29... Kb6 { [%eval 0.0] [%clk 0:17:15] } 30. Kf2 { [%eval 0.0] [%clk 0:30:30] } 30... R8d7 { [%eval 0.17] [%clk 0:09:22] } 31. Be4 { [%eval -0.15] [%clk 0:22:06] } 31... Bxe4 { [%eval -0.22] [%clk 0:09:22] } 32. Rxe4?! { [%eval -1.32] } { Inaccuracy. fxe4 was best. } { [%clk 0:22:27] } 32... Kc5 { [%eval -1.51] [%clk 0:09:02] } 33. a3?? { [%eval -4.83] } { Blunder. Ke1 was best. } { [%clk 0:22:03] } 33... Rb6 { [%eval -4.72] [%clk 0:07:32] } 34. b4+ { [%eval -4.7] } 34... axb4 { [%eval -4.28] [%clk 0:07:37] } 35. axb4+ { [%eval -4.2] [%clk 0:21:45] } 35... Rxb4 { [%eval -4.15] [%clk 0:06:04] } 36. Ke3 { [%eval -4.39] [%clk 0:19:50] } 36... Rxc4 { [%eval -4.55] [%clk 0:06:03] } 37. Re8 { [%eval -4.51] [%clk 0:19:56] } 37... Rc3 { [%eval -4.64] [%clk 0:00:00] } 38. Rc8+ { [%eval -4.62] [%clk 0:19:38] } 38... Kb4 { [%eval -4.54] [%clk 0:00:00] } 39. Re8 { [%eval -5.13] [%clk 0:19:54] } 39... b5 { [%eval -4.96] [%clk 0:00:00] } 40. Ra8 Kb3 41. Ra5 Kc4 42. Ra8 Re7+ 43. Kf2 Rc2 44. Ra2 Rxd2+ 45. Rxd2 { [%clk 0:43:00] } 45... Kc3 { [%clk 0:22:50] } 0-1