Mario Arguelles
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Tandil-ch | ??/??/1998 | 172 |  Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| C11 | French defence | 1 games |
| B33 | Sicilian defence | 1 games |
| B00 | King's pawn opening | 1 games |
| C18 | French, Winawer, advance variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 2 games |
| B51 | Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack | 1 games |
| B18 | Caro-Kann, classical variation | 1 games |
| B08 | Pirc, classical (two knights) system | 1 games |
