Solution
57… f4+ 58. ♚g7 f3 59. ♞c7 f2 60. ♞d5 ♚f3
The position
This advanced puzzle (rating 1954) asks Black to move to find the winning idea. It features these themes: Discovered Attack.
It is Black to move. Look for the tactic hiding in the position — Discovered Attack. Drag a piece on the board to play your move; the puzzle will tell you if you found the best continuation.
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