Solution
51. ♛xe4 ♞xe4+ 52. ♚xf3 ♞c3 53. a3 ♞b5 54. a4
The position
This intermediate puzzle (rating 1580) 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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