Solution
42. ♜xe6 ♜xe6 43. ♝xe6+ ♚xe6 44. ♚e4 h4 45. h3
The position
This expert puzzle (rating 2247) asks White to move to find the winning idea. It features these themes: Zugzwang.
It is White to move. Look for the tactic hiding in the position — Zugzwang. 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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