Marcio Arrieta
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Pan American-ch | ??/??/1997 | 106 | Venezuela |
| Wch U10 | ??/??/1997 | 49 | France |
| Hermano Adolfo op 8th | ??/??/1993 | 60 | Spain |
Most Played Openings as White
| ECO | Opening | Games |
| C54 | Giuoco Piano | 2 games |
| B23 | Sicilian, closed | 1 games |
| C02 | French, advance variation | 1 games |
| C57 | Two knights defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C50 | King's pawn game | 1 games |
| C56 | Two knights defence | 1 games |
| C47 | Four knights, Scotch variation | 1 games |
| C55 | Two knights defence | 1 games |


Venezuela
France
Spain