Puzzle 521776:
Puzzle 521776:
Tigran V Petrosian - Vladimir Antoshin
24th URS-ch Moscow URS (18), 1957 Tigran V Petrosian - Vladimir Antoshin
24th URS-ch Moscow URS (18), 1957
24th URS-ch Moscow URS (18), 1957 Tigran V Petrosian - Vladimir Antoshin
24th URS-ch Moscow URS (18), 1957