Solution
55. ♚d4 ♚f4 56. ♜xf5+ ♚xf5 57. ♚d5 ♚f4 58. ♚c6 ♚e4 59. ♚b7
The position
This expert puzzle (rating 2349) 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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