Solution
16… c4 17. ♜d7 ♛xd7 18. ♜xd7 cxb3
The position
This intermediate puzzle (rating 1684) asks Black to move to find the winning idea. It features these themes: Middlegame, Fork.
It is Black to move. Look for the tactic hiding in the position — Middlegame, Fork. 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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