Solution
54. ♛c4+ ♚e1 55. ♛xf1+ ♚xf1 56. c4 ♚e2 57. c5 bxc5 58. b6
The position
This advanced puzzle (rating 2071) asks White to move to find the winning idea. It features these themes: Quiet Move.
It is White to move. Look for the tactic hiding in the position — Quiet Move. 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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