26 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Costa, Milagros | Mollo Figueroa, Nicole | 0-1 | C01 | Round 7: Costa, Milagros - Mollo Figueroa, Nicole | 2024-12-07 |
| Costa, Milagros | Mereles Samaniego, Mia Aylin | 0-1 | B27 | Round 5: Costa, Milagros - Mereles Samaniego, Mia Aylin | 2024-12-05 |
| Costa, Milagros | Ascencio Salazar, Elena | 0-1 | B40 | Round 3: Costa, Milagros - Ascencio Salazar, Elena | 2024-12-04 |
| Costa, Milagros | Vergara Perez, Marcela Sophia | 0-1 | B43 | Round 1: Costa, Milagros - Vergara Perez, Marcela Sophia | 2024-12-03 |
| Costa, Milagros | Caballero, Tabare | 0-1 | C01 | Round 3: Costa, Milagros - Caballero, Tabare | 2024-04-21 |
| Costa, Milagros | Olmos, Ciro | 0-1 | B70 | Round 4: Costa, Milagros - Olmos, Ciro | 2024-04-21 |
| Costa, Milagros | Quevedo, Andreina | 1/2-1/2 | C41 | Round 6: Costa, Milagros - Quevedo, Andreina | 2024-03-29 |
| Costa, Milagros | Silva Rosas, Natalia | 1-0 | B12 | Round 4: Costa, Milagros - Silva Rosas, Natalia | 2024-03-27 |
| Costa, Milagros | Roepke, Sofia | 0-1 | C50 | Round 2: Costa, Milagros - Roepke, Sofia | 2024-03-25 |
| Costa, Milagros | Jaedyn C.R.Pierre | 1-0 | B13 | Round 2: Costa, Milagros - Jaedyn C.R.Pierre | |
| Costa, Milagros | Xu, Luna Yuexiu | 0-1 | B91 | Round 4: Costa, Milagros - Xu, Luna Yuexiu | |
| Costa, Milagros | Gradiz Menjivar, Oscar | 1-0 | C01 | Round 5: Costa, Milagros - Gradiz Menjivar, Oscar | |
| Costa, Milagros | Grisales Gamez, Luciana Valentina | 0-1 | A48 | FIDE World Youth U16 Chess Olympiad 2025 | |
| Costa, Milagros | Cupaban Alonso, Luciana | 0-1 | C54 | Round 8: Costa, Milagros - Cupaban Alonso, Luciana |