Koch
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Ruhrgebiet VK 9899 playoff | ??/??/1999 | 75 |  Germany |
| Ruhrgebiet VK3 9899 | ??/??/1998 | 339 | Germany |
| JBLN Ost 9495 | ??/??/1994 | 450 | Germany |
| Saarland-chA | ??/??/1993 | 0 | Germany |
Koch Repertoire with White pieces (most played)
| ECO | Opening | Games |
| A02 | Bird's opening | 3 games |
| A03 | Bird's opening | 2 games |
| E43 | Nimzo-Indian, Fischer variation | 1 games |
| E77 | King's Indian, Four pawns attack, 6.Be2 | 1 games |
Koch Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| C18 | French, Winawer, advance variation | 1 games |
| A15 | English, 1...Nf6 (Anglo-Indian defense) | 1 games |
| E08 | Catalan, closed, 7.Qc2 | 1 games |
| A88 | Dutch, Leningrad, main variation with c6 | 1 games |
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