Jan Wittenberger
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Frankfurt City-ch | 04/??/2001 | 890 | Germany |
| GER-ch district | ??/??/1996 | 0 | Germany |
| Weber mem | ??/??/1995 | 533 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C44 | King's pawn game | 3 games |
| C01 | French, exchange variation | 3 games |
| B25 | Sicilian, closed | 1 games |
| B70 | Sicilian, dragon variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B17 | Caro-Kann, Steinitz variation | 3 games |
| D03 | Torre attack (Tartakower variation) | 1 games |
| A32 | English, symmetrical variation | 1 games |
| B15 | Caro-Kann defence | 1 games |


Germany