Solution
43. ♞xc4 ♚xc4 44. ♚e1 ♚d5 45. ♚d1 ♚e4 46. ♚d2 ♚f5 47. ♚xd3
The position
This advanced puzzle (rating 2170) 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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