Puzzle 23069:
Puzzle 23069:
IM Saveliy Golubov (2501) - IM M. Vavulin (2575)
71st Moscow Blitz Moscow RUS, 2017.09.03 Golubov - Vavulin, Moscow 2017
71st Moscow Blitz Moscow RUS, 2017.09.03 Golubov - Vavulin, Moscow 2017