Rudi Horstmann
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Zwolle op-A | ??/??/1995 | 623 |  Netherlands |
| Groningen op2 | ??/??/1989 | 506 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| D90 | Gruenfeld, Three knights variation | 1 games |
| E47 | Nimzo-Indian, 4.e3 O-O, 5.Bd3 | 1 games |
| D86 | Gruenfeld, exchange, classical variation | 1 games |
| E94 | King's Indian, orthodox variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B09 | Pirc, Austrian attack | 1 games |
| B07 | Pirc defence | 1 games |
