Alexander Jonas
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Muensterland Verbandsklasse-B 0607 | 09/23/2006 | 1752 | Germany |
| Verbandsklasse A Muensterland 0506 | 09/03/2005 | 1810 | Germany |
| Steinfurt Bezirksliga 0405 | 10/??/2004 | 1417 | Germany |
| Muensterland Verbandsliga 0405 | 09/18/2004 | 1896 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| A04 | Reti opening | 6 games |
| A05 | Reti opening | 4 games |
| A07 | Reti, King's Indian attack (Barcza system) | 3 games |
| A12 | English, Caro-Kann defensive system | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B07 | Pirc defence | 6 games |
| E60 | King's Indian defence | 3 games |
| E83 | King's Indian, Saemisch, 6...Nc6 | 2 games |
| A26 | English, closed system | 1 games |


Germany