Mathias Duckheim
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Darm Heinerfestpokal op | ??/??/1993 | 489 |  Germany |
Most Played Openings as White
| ECO | Opening | Games |
| D37 | Queen's Gambit Declined, 4.Nf3 | 1 games |
| D07 | Queen's Gambit Declined, Chigorin defence | 1 games |
| A84 | Dutch defence | 1 games |
| D21 | Queen's Gambit Accepted, 3.Nf3 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C26 | Vienna, Falkbeer variation | 1 games |
| A46 | Queen's pawn game | 1 games |
| E61 | King's Indian defence, 3.Nc3 | 1 games |
| A05 | Reti opening | 1 games |
