Puzzle 53392:
Puzzle 53392:
David Bronstein (2585) - Ljubomir Ljubojevic (2570)
Petropolis Interzonal Petropolis (11), 1973 Bronstein - Ljubojevic, Petropolis 1973
Petropolis Interzonal Petropolis (11), 1973 Bronstein - Ljubojevic, Petropolis 1973