Jean Duche
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Sindelfingen | 10/??/1984 | 2340 | Germany |
| DEN-ch int U18 | ??/??/1980 | 134 | Denmark |
Most Played Openings as White
| ECO | Opening | Games |
| A24 | English, Bremen system with ...g6 | 2 games |
| A16 | English opening | 2 games |
| E68 | King's Indian, fianchetto, classical variation, 8.e4 | 1 games |
| A27 | English, three knights system | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B08 | Pirc, classical (two knights) system | 2 games |
| B90 | Sicilian, Najdorf | 1 games |
| B01 | Scandinavian (centre counter) defence | 1 games |
| B19 | Caro-Kann, classical, 7...Nd7 | 1 games |


Germany
Denmark