Solution
20. ♜a1 ♝h6+ 21. ♞g5 ♛xc3+ 22. ♛xc3 ♜xc3 23. ♚xc3
The position
This intermediate puzzle (rating 1796) 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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