Oscar Vaca
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Quito Gran Prix op | ??/??/1997 | 509 | Ecuador |
Most Played Openings as White
| ECO | Opening | Games |
| B13 | Caro-Kann, exchange variation | 1 games |
| B33 | Sicilian defence | 1 games |
| E70 | King's Indian, 4.e4 | 1 games |
| C30 | King's gambit | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D85 | Gruenfeld, exchange variation | 1 games |
| A00 | Polish (Sokolsky) opening | 1 games |
| D05 | Queen's pawn game | 1 games |
| B30 | Sicilian defence | 1 games |


Ecuador