Ion Theiss
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Timisoara op | ??/??/1999 | 535 | Romania |
| Timisoara op rapid | ??/??/1999 | 494 | Romania |
Most Played Openings as White
| ECO | Opening | Games |
| D00 | Queen's pawn game | 6 games |
| B09 | Pirc, Austrian attack | 1 games |
| C11 | French defence | 1 games |
| B07 | Pirc defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C47 | Four knights, Scotch variation | 1 games |
| C27 | Vienna game | 1 games |
| C77 | Ruy Lopez, Morphy defence | 1 games |
| A40 | Queen's pawn | 1 games |


Romania