Solution
51. ♜g7+ ♜xg7 52. hxg7
The position
This beginner puzzle (rating 871) asks White to move to find the winning idea. It features these themes: Rook Endgame.
It is White to move. Look for the tactic hiding in the position — Rook Endgame. 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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