Puzzle 67055:
Puzzle 67055:
Georgy Lisitsin - Paul Keres
12th URS-ch Moscow URS (6), 1940.09.12 Georgy Lisitsin - Paul Keres
12th URS-ch Moscow URS (6), 1940.09.12
12th URS-ch Moscow URS (6), 1940.09.12 Georgy Lisitsin - Paul Keres
12th URS-ch Moscow URS (6), 1940.09.12