Robert Jonas
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Steinfurt Bezirksliga 0607 | ??/??/2006 | 1527 |  Germany |
| Bezirksliga Steinfurt 0506 | 09/24/2005 | 1375 | Germany |
| Steinfurt Bezirksliga 0405 | 10/??/2004 | 1417 | Germany |
| Muensterland Verbandsliga 0405 | 09/18/2004 | 1896 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| B01 | Scandinavian (centre counter) defence | 3 games |
| A00 | Polish (Sokolsky) opening | 2 games |
| B90 | Sicilian, Najdorf | 1 games |
| B34 | Sicilian, accelerated fianchetto, exchange variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C50 | King's pawn game | 4 games |
| C55 | Two knights defence | 3 games |
| C77 | Ruy Lopez, Morphy defence | 2 games |
| D80 | Gruenfeld defence | 2 games |
