Solution
42. e6 fxe6 43. fxe6 ♜b2+ 44. ♚xd3
The position
This intermediate puzzle (rating 1443) asks White to move to find the winning idea. It features these themes: Rook Endgame.
It is White to move. Look for the tactic hiding in the position — Rook 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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