Solution
18. ♜xc8 ♛xc8 19. ♝xd5 ♞c4 20. ♝xc4
The position
This advanced puzzle (rating 1943) 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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