Achim Duncker
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Hessenliga 9900 | 09/26/1999 | 1172 | Germany |
| NRW-ch U20 | ??/??/1989 | 147 | Germany |
| Porz op | ??/??/1986 | 129 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| B26 | Sicilian, closed, 6.Be3 | 1 games |
| D94 | Gruenfeld, 5.e3 | 1 games |
| A55 | Old Indian, main line | 1 games |
| A80 | Dutch | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C43 | Petrov, modern (Steinitz) attack | 2 games |
| C42 | Petrov's defence | 1 games |


Germany