Claus Derz
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Berlin op 09 | 09/05/2005 | 1607 | Germany |
| Berlin op 09 | 09/06/2004 | 1727 | Germany |
| Berlin op 10 | 10/13/2003 | 1705 | Germany |
| Berlin Eckbauer op | ??/??/1999 | 399 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| D52 | Queen's Gambit Declined | 2 games |
| D06 | Queen's Gambit | 1 games |
| A80 | Dutch | 1 games |
| D37 | Queen's Gambit Declined, 4.Nf3 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D00 | Queen's pawn game | 2 games |
| C01 | French, exchange variation | 1 games |
| D02 | Queen's pawn game | 1 games |
| B01 | Scandinavian (centre counter) defence | 1 games |


Germany