J. Perez Mas
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Autonomico-chT | ??/??/1997 | 523 | Spain |
Most Played Openings as White
| ECO | Opening | Games |
| E14 | Queen's Indian, 4.e3 | 1 games |
| E90 | King's Indian, 5.Nf3 | 1 games |
| D94 | Gruenfeld, 5.e3 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B94 | Sicilian, Najdorf, 6.Bg5 | 1 games |
| D02 | Queen's pawn game | 1 games |


Spain