Detlev Billen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Oberliga Nord O 9798 | 10/??/1997 | 1371 | Germany |
| Regionalliga NordN | ??/??/1989 | 432 | Germany |
| Regionalliga NordN | ??/??/1988 | 250 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| E05 | Catalan, open, classical line | 2 games |
| E19 | Queen's Indian, old main line, 9.Qxc3 | 1 games |
| A32 | English, symmetrical variation | 1 games |
| D02 | Queen's pawn game | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B17 | Caro-Kann, Steinitz variation | 3 games |
| D02 | Queen's pawn game | 2 games |
| B12 | Caro-Kann defence | 2 games |
| A59 | Benko gambit, 7.e4 | 1 games |


Germany