Solution
20… ♜xg2+ 21. ♛xg2 ♜g8 22. ♛xg8+ ♞xg8
The position
This intermediate puzzle (rating 1410) asks Black to move to find the winning idea. It features these themes: Middlegame, Pin.
It is Black to move. Look for the tactic hiding in the position — Middlegame, Pin. 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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