O. O'Siochru
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| EUCup | ??/??/1967 | 0 |  Denmark |
O. O'Siochru Repertoire with White pieces (most played)
| ECO | Opening | Games |
| B49 | Sicilian, Taimanov variation | 1 games |
| B28 | Sicilian, O'Kelly variation | 1 games |
O. O'Siochru Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| E44 | Nimzo-Indian, Fischer variation, 5.Ne2 | 1 games |
| E37 | Nimzo-Indian, classical, Noa variation, main line, 7.Qc2 | 1 games |
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