Solution
48. g4+ ♚g6 49. f5+ ♚xg5 50. fxe6
The position
This easy puzzle (rating 1311) asks White to move to find the winning idea. It features these themes: Fork, Knight Endgame.
It is White to move. Look for the tactic hiding in the position — Fork, Knight 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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