Puzzle 265934:
Puzzle 265934:
Tigran V Petrosian - Nikolai V Krogius
URS-ch sf Tbilisi (8), 1956 Petrosian - Krogius, Tbilisi 1956
URS-ch sf Tbilisi (8), 1956 Petrosian - Krogius, Tbilisi 1956
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