W. Mueller
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Lugano op | 10/30/2004 | 1785 |  Switzerland |
| Lugano op | 10/31/2003 | 1788 | Switzerland |
| Baden Casino op | 04/??/1999 | 1563 | Switzerland |
| Ruhr-ch Seniors 5th | ??/??/1998 | 1421 |  Germany |
Most Played Openings as White
| ECO | Opening | Games |
| B33 | Sicilian defence | 5 games |
| E70 | King's Indian, 4.e4 | 5 games |
| C10 | French, Paulsen variation | 3 games |
| B06 | Robatsch (modern) defence | 3 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C41 | Philidor's defence | 4 games |
| D37 | Queen's Gambit Declined, 4.Nf3 | 3 games |
| B50 | Sicilian | 2 games |
| D38 | Queen's Gambit Declined, Ragozin variation | 2 games |
