It’s Your Move: daily chess puzzle # 186

Black to play and win

Konoarkowska-Sokolov v Zatulovskaya, Subotica 1967

Solution

Examine all biffs helps here, and 1…Bh4! is game over. 2 Qh4 Nf3+; or 2 g3 Bg3 3 Qg2 and say 3…ef are ruinous.