Solution
37. ♜xf7 ♜xf7 38. ♛c4 ♝f6+ 39. gxf6
The position
This expert puzzle (rating 2249) asks White to move to find the winning idea. It features these themes: Middlegame, Pin.
It is White to move. Look for the tactic hiding in the position — Middlegame, 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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