Knoppel, Jan Heribert
Springaren, 1949
#4
10 + 4
45 | Schach | 1951 |
3680 | Jan Knoppel Udvalgte Skakproblemer | 1955 |
3105 | FIDE Album (1945-1955) | 1964 |
6479 | Problemschach (Sidler) | 1968 |
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