Solution
38. e6 ♜xd4+ 39. ♚xd4
The position
This intermediate puzzle (rating 1684) asks White to move to find the winning idea. It features these themes: Rook Endgame, Pin.
It is White to move. Look for the tactic hiding in the position — Rook Endgame, Pin. 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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