Solution
46. g5 e4 47. f6 e3 48. ♚d3 gxf6 49. g6
The position
This expert puzzle (rating 2324) asks White to move to find the winning idea. It features these themes: Bishop Endgame.
It is White to move. Look for the tactic hiding in the position — Bishop 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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