M. Martiarena
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| San Sebastian op | ??/??/1995 | 867 |  Spain |
Most Played Openings as White
| ECO | Opening | Games |
| B36 | Sicilian, accelerated fianchetto, Maroczy bind | 1 games |
| C55 | Two knights defence | 1 games |
| B40 | Sicilian defence | 1 games |
| A17 | English opening | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B22 | Sicilian, Alapin's variation (2.c3) | 1 games |
| B40 | Sicilian defence | 1 games |
| D20 | Queen's gambit accepted | 1 games |
| E50 | Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d5 | 1 games |
