Solution
18. ♝xe7 ♝xd1 19. ♝xd8 ♜xe1+ 20. ♞xe1 ♜xd8 21. ♜xd1
The position
This intermediate puzzle (rating 1576) asks White to move to find the winning idea. It features these themes: Middlegame.
It is White to move. Look for the tactic hiding in the position — Middlegame. 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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