Solution
31… ♜xe1+ 32. ♜xe1 ♜xe1+ 33. ♚xe1 ♝a5 34. a3 c5
The position
This intermediate puzzle (rating 1681) asks Black to move to find the winning idea. It features these themes: Pin.
It is Black to move. Look for the tactic hiding in the position — 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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