Solution
66. ♚xd4 ♚f6 67. ♚c5 ♚e7 68. ♚c6 ♚d8 69. ♚d6
The position
This intermediate puzzle (rating 1720) asks White to move to find the winning idea. It features these themes: Tactics.
It is White to move. Look for the tactic hiding in the position — Tactics. Drag a piece on the board to play your move; the puzzle will tell you if you found the best continuation.
Take 50,000 puzzles anywhere
Get Chess Puzzles Trainer for iPhone and iPad — the same puzzles, offline, with progress tracking and spaced repetition.