Solution
55. c4 ♚g7 56. ♝b5 ♜g3 57. ♚xb6 ♜g6+ 58. ♚xa5
The position
This advanced puzzle (rating 2148) asks White to move to find the winning idea. It features these themes: Quiet Move.
It is White to move. Look for the tactic hiding in the position — Quiet Move. 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.