Puzzle 183549: White to win
Puzzle 183549: White to win
Efim Geller (2585) - Werner Hug (2445)
Petropolis Interzonal Petropolis (13), 1973 Geller - Hug, Petropolis 1973
Petropolis Interzonal Petropolis (13), 1973 Geller - Hug, Petropolis 1973