Puzzle 67001:
Puzzle 67001:
Peter Dubinin - Iosif Pogrebyssky
11th URS-ch Leningrad URS (12), 1939 Peter Dubinin - Iosif Pogrebyssky
11th URS-ch Leningrad URS (12), 1939
11th URS-ch Leningrad URS (12), 1939 Peter Dubinin - Iosif Pogrebyssky
11th URS-ch Leningrad URS (12), 1939