Event: Round 1: Mareco, Sandro - Errazola, Mauricio
Date: 2025-03-21
White: Mareco, Sandro
WhiteTitle: GM
WhiteElo: 2539
Black: Errazola, Mauricio
BlackElo: 1886
Result: 1-0
ECO: E12
Opening: Queen's Indian Defense: Kasparov-Petrosian Variation, Marco Defense
Variant: Standard
TimeControl: 3+2

1. Nf3 { [%eval 0.14] [%clk 0:03:02] } 1... Nf6 { [%eval 0.23] [%clk 0:03:03] } 2. c4 { [%eval 0.12] [%clk 0:03:03] } 2... b6 { [%eval 0.28] [%clk 0:03:01] } 3. d4 { [%eval 0.22] [%clk 0:03:03] } 3... Bb7 { [%eval 0.19] [%clk 0:03:01] } 4. Nc3 { [%eval 0.13] [%clk 0:03:03] } 4... e6 { [%eval 0.18] [%clk 0:03:02] } 5. a3 { [%eval 0.14] [%clk 0:03:04] } 5... Be7 { [%eval 0.56] [%clk 0:02:59] } 6. d5 { [%eval 0.56] [%clk 0:03:05] } 6... O-O { [%eval 0.53] [%clk 0:02:57] } 7. e4 { [%eval 0.47] [%clk 0:03:06] } 7... exd5 { [%eval 0.54] [%clk 0:02:55] } 8. cxd5 { [%eval 0.76] [%clk 0:03:05] } 8... d6 { [%eval 0.7] [%clk 0:02:47] } 9. Bd3 { [%eval 0.38] [%clk 0:03:05] } 9... Re8 { [%eval 0.64] [%clk 0:02:45] } 10. O-O { [%eval 0.63] [%clk 0:03:05] } 10... Nbd7?! { [%eval 1.49] } { Inaccuracy. c6 was best. } { [%clk 0:02:45] } 11. Nd4 { [%eval 1.49] [%clk 0:03:05] } 11... Nc5 { [%eval 1.88] [%clk 0:02:20] } 12. Bc2 { [%eval 1.84] [%clk 0:03:04] } 12... Bf8 { [%eval 1.94] [%clk 0:01:47] } 13. Qf3 { [%eval 1.43] [%clk 0:03:00] } 13... a5 { [%eval 1.83] [%clk 0:01:27] } 14. Bg5 { [%eval 1.78] [%clk 0:02:30] } 14... Be7 { [%eval 1.64] [%clk 0:01:27] } 15. Bf4 { [%eval 1.57] [%clk 0:02:21] } 15... Nfd7 { [%eval 1.76] [%clk 0:01:11] } 16. Nf5?! { [%eval 1.13] } { Inaccuracy. b4 was best. } { [%clk 0:02:21] } 16... Bf6 { [%eval 1.43] [%clk 0:01:06] } 17. Qg3 { [%eval 1.01] [%clk 0:02:12] } 17... Ne5 { [%eval 1.15] [%clk 0:00:54] } 18. Rfe1? { [%eval 0.0] } { Mistake. Bxe5 was best. } { [%clk 0:02:08] } 18... Ng6?! { [%eval 0.58] } { Inaccuracy. Bc8 was best. } { [%clk 0:00:52] } 19. Bd2 { [%eval 0.51] [%clk 0:02:08] } 19... Be5?! { [%eval 1.46] } { Inaccuracy. Bc8 was best. } { [%clk 0:00:51] } 20. f4 { [%eval 1.25] [%clk 0:02:06] } 20... Bf6 { [%eval 1.34] [%clk 0:00:47] } 21. Kh1 { [%eval 1.05] [%clk 0:02:05] } 21... Bc8 { [%eval 1.08] [%clk 0:00:46] } 22. Qf3 { [%eval 1.13] [%clk 0:01:44] } 22... Nh4 { [%eval 1.26] [%clk 0:00:39] } 23. Nxh4 { [%eval 1.19] [%clk 0:01:45] } 23... Bxh4 { [%eval 1.24] [%clk 0:00:40] } 24. g3 { [%eval 1.08] [%clk 0:01:46] } 24... Bf6 { [%eval 1.05] [%clk 0:00:41] } 25. g4 { [%eval 1.12] [%clk 0:01:41] } 25... Bh4?! { [%eval 1.91] } { Inaccuracy. g6 was best. } { [%clk 0:00:35] } 26. Rg1 { [%eval 1.97] [%clk 0:01:41] } 26... Qf6? { [%eval 3.35] } { Mistake. Bf6 was best. } { [%clk 0:00:18] } 27. g5 { [%eval 3.28] [%clk 0:01:39] } 27... Qd4?! { [%eval 4.13] } { Inaccuracy. Qe7 was best. } { [%clk 0:00:18] } 28. Be3 { [%eval 4.11] [%clk 0:01:40] } 28... Qc4 { [%eval 4.18] [%clk 0:00:15] } 29. Rad1 { [%eval 4.24] [%clk 0:01:40] } 29... f6?! { [%eval 5.33] } { Inaccuracy. Bb7 was best. } { [%clk 0:00:10] } 30. Qh5 { [%eval 5.07] [%clk 0:01:30] } 30... g6?! { [%eval 6.71] } { Inaccuracy. Ba6 was best. } { [%clk 0:00:06] } 31. Qxh4 { [%eval 5.25] [%clk 0:01:30] } 31... f5 { [%eval 5.21] [%clk 0:00:05] } 32. Bd4 { [%eval 4.2] [%clk 0:01:26] } 32... Rxe4?! { [%eval 5.34] } { Inaccuracy. Nxe4 was best. } { [%clk 0:00:01] } 33. Bxe4 { [%eval 5.37] [%clk 0:01:24] } 33... Nxe4?! { [%eval 7.02] } { Inaccuracy. fxe4 was best. } { [%clk 0:00:04] } 34. Rge1?! { [%eval 4.63] } { Inaccuracy. Qh6 was best. } { [%clk 0:01:19] } 34... Bb7?! { [%eval 7.58] } { Inaccuracy. c5 was best. } { [%clk 0:00:03] } 35. Qh6 { [%eval 6.85] [%clk 0:01:13] } 1-0