Bernhard Jonas
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| BL2-N 9899 | 10/??/1998 | 2148 | Germany |
| Oberliga Nord O 9293 | 10/??/1992 | 823 | Germany |
| BL2-N 9091 | 10/??/1990 | 1240 | Germany |
| Regionalliga NordS 8990 | 10/08/1989 | 39 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C18 | French, Winawer, advance variation | 4 games |
| B06 | Robatsch (modern) defence | 2 games |
| B34 | Sicilian, accelerated fianchetto, exchange variation | 2 games |
| B05 | Alekhine's defence, modern variation, 4...Bg4 | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B96 | Sicilian, Najdorf, 7.f4 | 3 games |
| D03 | Torre attack (Tartakower variation) | 2 games |
| D85 | Gruenfeld, exchange variation | 2 games |
| B26 | Sicilian, closed, 6.Be3 | 1 games |


Germany