Leon Wilken
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| La Habana ol (Men) fin-D | 10/25/1966 | 0 |  Cuba |
| La Habana ol (Men) prel | 10/25/1966 | 0 | Cuba |
| Johannesburg | ??/??/1955 | 0 |  South Africa |
Most Played Openings as White
| ECO | Opening | Games |
| D45 | Queen's Gambit Declined semi-Slav, 5.e3 | 1 games |
| E14 | Queen's Indian, 4.e3 | 1 games |
| D05 | Queen's pawn game | 1 games |
| E55 | Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D00 | Queen's pawn game | 1 games |
| E39 | Nimzo-Indian, classical, Pirc variation | 1 games |
| D47 | Queen's Gambit Declined semi-Slav, 7.Bc4 | 1 games |
| C02 | French, advance variation | 1 games |
