Hartong, Jan
1st Prize, Parallele 50, 1949
#3
12 + 7
45 | Schach | 1950 |
4872 | Themes-64 | 1957 |
3147 | Chess Problems: Introduction to an Art | 1963 |
3105 | FIDE Album (1945-1955) | 1964 |
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