Puzzle 114710:
Puzzle 114710:
Gotthard Backlund - Georgi Tringov
12th olm qual. group 1 Moscow URS (4), 1956.09.04 Backlund - Tringov, Moscow 1956
12th olm qual. group 1 Moscow URS (4), 1956.09.04 Backlund - Tringov, Moscow 1956