Holger Gruen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Schleswig Holstein-ch op 49th | ??/??/1994 | 84 | Germany |
| Schleswig Holstein-ch 47th | ??/??/1992 | 0 | Germany |
| Schleswig Holstein-ch cand | ??/??/1991 | 0 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C01 | French, exchange variation | 2 games |
| C64 | Ruy Lopez, classical (Cordel) defence | 1 games |
| B04 | Alekhine's defence, modern variation | 1 games |
| B47 | Sicilian, Taimanov (Bastrikov) variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B02 | Alekhine's defence | 4 games |
| A41 | Queen's Pawn | 2 games |
| A42 | Modern defence, Averbakh system | 2 games |
| B07 | Pirc defence | 1 games |


Germany