Event: Round 9: Martinez Serna, Juan Esteban - Ospina Castro, Santiago
Date: 2025-04-19
White: Martinez Serna, Juan Esteban
WhiteElo: 1943
Black: Ospina Castro, Santiago
BlackTitle: FM
BlackElo: 2148
Result: 1/2-1/2
ECO: D37
Opening: Queen's Gambit Declined: Harrwitz Attack
Variant: Standard
TimeControl: 90+30

1. d4 { [%eval 0.17] [%clk 1:30:57] } 1... d5 { [%eval 0.2] [%clk 1:30:36] } 2. c4 { [%eval 0.26] [%clk 1:31:10] } 2... e6 { [%eval 0.27] [%clk 1:31:02] } 3. Nf3 { [%eval 0.16] [%clk 1:31:07] } 3... Nf6 { [%eval 0.17] [%clk 1:31:25] } 4. Nc3 { [%eval 0.1] [%clk 1:31:16] } 4... Be7 { [%eval 0.14] [%clk 1:31:49] } 5. Bf4 { [%eval 0.19] [%clk 1:31:33] } 5... O-O { [%eval 0.33] [%clk 1:32:06] } 6. e3 { [%eval 0.25] [%clk 1:31:53] } 6... c5 { [%eval 0.24] [%clk 1:30:58] } 1/2-1/2