Gerd Peter Gruen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| NRW-Liga II 9596 | ??/??/1995 | 1445 | Germany |
| NRW-Liga I 9495 | ??/??/1994 | 1436 | Germany |
| Bad Mergentheim op | ??/??/1988 | 886 | Germany |
| WchT U26 | 08/??/1981 | 14 | Austria |
Most Played Openings as White
| ECO | Opening | Games |
| E69 | King's Indian, fianchetto, classical main line | 3 games |
| A43 | Old Benoni defence | 1 games |
| E18 | Queen's Indian, old main line, 7.Nc3 | 1 games |
| A81 | Dutch defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| E11 | Bogo-Indian defence | 2 games |
| C65 | Ruy Lopez, Berlin defence | 2 games |
| E20 | Nimzo-Indian defence | 1 games |
| A46 | Queen's pawn game | 1 games |
Germany
Male
FIDE ID:

Austria