O. Mueller
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Saarland-chD | ??/??/1992 | 0 | Germany |
| GER CupT | ??/??/1991 | 1188 | Germany |
| Kirchheim rapid | ??/??/1990 | 547 | Germany |
| Oberliga NRW 8586 | ??/??/1985 | 293 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| D50 | Queen's Gambit Declined, 4.Bg5 | 1 games |
| E61 | King's Indian defence, 3.Nc3 | 1 games |
| A40 | Queen's pawn | 1 games |
| D51 | Queen's Gambit Declined, 4.Bg5 Nbd7 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C44 | King's pawn game | 1 games |
| D11 | Queen's Gambit Declined Slav, 3.Nf3 | 1 games |
| B25 | Sicilian, closed | 1 games |
| A28 | English, four knights system | 1 games |


Germany