Hartong, Jan
1/2 Prize, El Ajedrez Espanol, 1952
#2
9 + 9
3147 | Chess Problems: Introduction to an Art | 1963 |
3105 | FIDE Album (1945-1955) | 1964 |
1085 | Australian Chess Problem Magazine | 1995 |
133 | The Problemist Supplement | 2011 |
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