Solution
20. ♜xe8+ ♚xe8 21. h5 ♝xh5 22. gxh5
The position
This easy puzzle (rating 1200) asks White to move to find the winning idea. It features these themes: Trapped Piece.
It is White to move. Look for the tactic hiding in the position — Trapped Piece. 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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