J. Siebert
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Niederbayern-chA | ??/??/1999 | 656 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| A43 | Old Benoni defence | 1 games |
| D52 | Queen's Gambit Declined | 1 games |
| D36 | Queen's Gambit Declined, exchange, positional line, 6.Qc2 | 1 games |
| E31 | Nimzo-Indian, Leningrad, main line | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A03 | Bird's opening | 1 games |
| C12 | French, MacCutcheon variation | 1 games |
| A12 | English, Caro-Kann defensive system | 1 games |
| C06 | French, Tarrasch, closed variation, main line | 1 games |


Germany