Solution
57. ♜xe1+ ♚xe1 58. c5 ♜b8 59. c6
The position
This intermediate puzzle (rating 1417) 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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