Solution
47. ♛a8+ ♚b6 48. ♜b8+ ♜b7 49. ♜xb7#
The position
This intermediate puzzle (rating 1724) asks White to move to find the winning idea. It features these themes: Mate in 3.
It is White to move. Look for the tactic hiding in the position — Mate in 3. 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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