J. Feierfeil
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Klatovy op-A | ??/??/2000 | 2050 | Czech Republic |
| Klatovy op-A | ??/??/1999 | 1011 | Czech Republic |
| Klatovy op-B | ??/??/1998 | 1151 | Czech Republic |
| Klatovy op-B | ??/??/1997 | 1204 | Czech Republic |
Most Played Openings as White
| ECO | Opening | Games |
| E88 | King's Indian, Saemisch, orthodox, 7.d5 c6 | 2 games |
| A88 | Dutch, Leningrad, main variation with c6 | 2 games |
| E70 | King's Indian, 4.e4 | 2 games |
| D60 | Queen's Gambit Declined, Orthodox defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B76 | Sicilian, dragon, Yugoslav attack, 7...O-O | 3 games |
| D94 | Gruenfeld, 5.e3 | 2 games |
| B21 | Sicilian, Grand Prix attack | 2 games |
| B55 | Sicilian, Prins variation, Venice attack | 2 games |


Czech Republic