Event: South African Chess Open
Site: South Africa
Date: 2025-06-28
White: Jacobs, Calvin Nicholas
WhiteElo: 1905
Black: Smit, Devon
BlackElo: 1915
Result: 1-0
ECO: A01
Opening: Nimzo-Larsen Attack: Modern Variation
Variant: Standard
TimeControl: 90+30

1. b3 { [%eval 0.0] [%clk 1:30:57] } 1... e5 { [%eval 0.0] [%clk 1:30:46] } 2. Bb2 { [%eval 0.0] [%clk 1:31:21] } 2... Nc6 { [%eval 0.0] [%clk 1:31:11] } 3. Nf3 { [%eval -0.28] [%clk 1:31:42] } 3... e4 { [%eval -0.21] [%clk 1:24:03] } 4. Nd4 { [%eval -0.36] [%clk 1:30:57] } 4... Nxd4 { [%eval -0.2] [%clk 1:23:16] } 5. Bxd4 { [%eval -0.33] [%clk 1:31:17] } 5... d5 { [%eval -0.19] [%clk 1:23:35] } 6. e3 { [%eval -0.38] [%clk 1:31:01] } 6... Nf6?! { [%eval 0.33] } { Inaccuracy. Bf5 was best. } { [%clk 1:22:55] } 7. c4 { [%eval 0.14] [%clk 1:27:59] } 7... c6 { [%eval 0.35] [%clk 1:22:58] } 8. cxd5 { [%eval 0.0] [%clk 1:27:03] } 8... Nxd5 { [%eval 0.05] [%clk 1:17:51] } 9. Bc4?! { [%eval -0.74] } { Inaccuracy. Nc3 was best. } { [%clk 1:20:55] } 9... Qg5 { [%eval -0.71] [%clk 1:03:29] } 10. Bxd5?! { [%eval -1.28] } { Inaccuracy. Kf1 was best. } { [%clk 1:18:44] } 10... cxd5 { [%eval -0.82] [%clk 1:00:43] } 11. Rg1? { [%eval -2.02] } { Mistake. Kf1 was best. } { [%clk 1:18:30] } 11... Bd6?! { [%eval -1.31] } { Inaccuracy. Bg4 was best. } { [%clk 0:56:21] } 12. Qe2 { [%eval -1.07] [%clk 1:12:47] } 12... Bxh2 { [%eval -1.08] [%clk 0:52:38] } 13. Rf1? { [%eval -2.82] } { Mistake. Rh1 was best. } { [%clk 1:12:52] } 13... O-O?! { [%eval -2.15] } { Inaccuracy. Qxg2 was best. } { [%clk 0:31:01] } 14. Nc3?! { [%eval -3.44] } { Inaccuracy. g3 was best. } { [%clk 1:09:07] } 14... Bg4? { [%eval -1.51] } { Mistake. Qxg2 was best. } { [%clk 0:29:44] } 15. f3 { [%eval -1.99] [%clk 1:08:07] } 15... Bg3+ { [%eval -1.61] [%clk 0:29:54] } 16. Kd1 { [%eval -1.54] [%clk 1:08:31] } 16... Bf5?! { [%eval -0.8] } { Inaccuracy. Bh5 was best. } { [%clk 0:29:30] } 17. Qb5?! { [%eval -1.59] } { Inaccuracy. f4 was best. } { [%clk 1:07:25] } 17... Rfd8 { [%eval -1.43] [%clk 0:25:05] } 18. f4 { [%eval -1.53] [%clk 1:06:21] } 18... Bg4+ { [%eval -1.21] [%clk 0:24:05] } 19. Kc2 { [%eval -1.09] [%clk 1:05:49] } 19... Qf5?! { [%eval -0.52] } { Inaccuracy. Qe7 was best. } { [%clk 0:24:13] } 20. Qxb7 { [%eval -0.18] [%clk 1:05:10] } 20... a5?! { [%eval 0.62] } { Inaccuracy. Bh4 was best. } { [%clk 0:24:29] } 21. Qe7?! { [%eval 0.0] } { Inaccuracy. Rh1 was best. } { [%clk 1:01:24] } 21... f6 { [%eval 0.54] [%clk 0:22:36] } 22. Rac1 { [%eval 0.64] [%clk 0:59:15] } 22... Rd7 { [%eval 1.07] [%clk 0:14:15] } 23. Qc5 { [%eval 1.32] [%clk 0:58:46] } 23... a4 { [%eval 1.73] [%clk 0:12:08] } 24. b4 { [%eval 1.54] [%clk 0:57:39] } 24... a3 { [%eval 2.12] [%clk 0:11:58] } 25. b5 { [%eval 2.07] [%clk 0:56:04] } 25... Rdd8 { [%eval 2.4] [%clk 0:12:16] } 26. Kb1 { [%eval 2.26] [%clk 0:51:04] } 26... Qd7 { [%eval 2.77] [%clk 0:11:37] } 27. b6 { [%eval 2.69] [%clk 0:50:00] } 27... Kh8 { [%eval 3.22] [%clk 0:10:57] } 28. Qb4 { [%eval 2.92] [%clk 0:47:31] } 28... Rac8 { [%eval 3.29] [%clk 0:07:25] } 29. Qxa3 { [%eval 3.25] [%clk 0:39:01] } 29... Rc4 { [%eval 3.47] [%clk 0:07:19] } 30. Qb3 { [%eval 3.04] [%clk 0:37:53] } 30... Qd6?! { [%eval 3.89] } { Inaccuracy. h5 was best. } { [%clk 0:05:25] } 31. Nb5 { [%eval 3.81] [%clk 0:34:08] } 31... Qd7 { [%eval 4.12] [%clk 0:03:59] } 32. Rxc4 { [%eval 4.14] [%clk 0:31:39] } 32... dxc4 { [%eval 4.12] [%clk 0:04:25] } 33. Qxc4 { [%eval 4.13] [%clk 0:30:20] } 33... Be6 { [%eval 4.25] [%clk 0:03:59] } 34. Qb4 { [%eval 4.27] [%clk 0:29:08] } 34... Qd5 { [%eval 4.39] [%clk 0:02:23] } 35. Nc3 { [%eval 4.45] [%clk 0:29:22] } 35... Qb7 { [%eval 4.44] [%clk 0:02:36] } 36. Rc1 { [%eval 4.42] [%clk 0:28:59] } 36... Qa6?! { [%eval 5.57] } { Inaccuracy. h5 was best. } { [%clk 0:02:06] } 37. Ka1 { [%eval 4.78] [%clk 0:25:32] } 37... Rc8?! { [%eval 6.13] } { Inaccuracy. Qb7 was best. } { [%clk 0:02:15] } 38. b7 { [%eval 6.08] [%clk 0:25:13] } 38... Rb8 { [%eval 5.99] [%clk 0:02:25] } 39. Rb1 { [%eval 5.93] [%clk 0:25:25] } 39... Qc6 { [%eval 6.47] [%clk 0:00:55] } 40. Ba7 { [%eval 6.77] [%clk 0:25:20] } 40... Be1 { [%eval 8.66] [%clk 0:00:37] } 41. Bxb8 { [%eval 8.55] [%clk 0:25:00] } 41... Bxd2 { [%eval 8.5] [%clk 0:01:00] } 42. Be5 { [%eval 7.95] [%clk 0:25:16] } 1-0