Leites, Samuil Davidovich
Loshinski, Lev Ilich
Umnov, Evgeny Ivanovich
1st HM., BCPS 010. Ty., 1929-1930
#2
9 + 9
56 | The Problemist | 1930 |
5314 | Grossmeister Shakhmatnoi Kompozitsii | 1980 |
136 | Problem Observer | 2018 |
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