Mario Augusto Silva Arajo
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Wch Seniors 15th | 09/28/2005 | 1763 |  Italy |
Mario Augusto Silva Arajo Repertoire with White pieces (most played)
| ECO | Opening | Games |
| A05 | Reti opening | 1 games |
| A07 | Reti, King's Indian attack (Barcza system) | 1 games |
| A93 | Dutch, stonewall, Botwinnik variation | 1 games |
| B59 | Sicilian, Boleslavsky variation, 7.Nb3 | 1 games |
Mario Augusto Silva Arajo Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| B90 | Sicilian, Najdorf | 2 games |
| B53 | Sicilian, Chekhover variation | 1 games |
| D05 | Queen's pawn game | 1 games |
| B25 | Sicilian, closed | 1 games |
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