Keller, Michael
1st Prize, Schach-Echo, 1972/I
#2
10 + 13
328 | Schweizerische Schachzeitung | 1972 |
3753 | FIDE Album (1971-1973) | 1978 |
4655 | Michael Keller Ein Meister der Schachkomposition | 1994 |
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