Puzzle 321912:
Puzzle 321912:
Efim Bogoljubov - Oldrich Duras
DSB-19.Kongress Mannheim (2), 1914 Efim Bogoljubov - Oldrich Duras
DSB-19.Kongress Mannheim (2), 1914
DSB-19.Kongress Mannheim (2), 1914 Efim Bogoljubov - Oldrich Duras
DSB-19.Kongress Mannheim (2), 1914