Male
FIDE ID:
Ruben Castillo
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| BOL-ch | 10/09/2003 | 2049 |  Bolivia |
| Santa Cruz op | 08/05/2003 | 850 | Bolivia |
Most Played Openings as White
| ECO | Opening | Games |
| E38 | Nimzo-Indian, classical, 4...c5 | 1 games |
| E91 | King's Indian, 6.Be2 | 1 games |
| E97 | King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) | 1 games |
| E73 | King's Indian, 5.Be2 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D10 | Queen's Gambit Declined Slav defence | 1 games |
| B18 | Caro-Kann, classical variation | 1 games |
| A10 | English opening | 1 games |
| D26 | Queen's Gambit Accepted, 4...e6 | 1 games |
