Solution
47… ♛b1+ 48. ♛f1 ♜c1 49. ♚g2 ♜xf1
The position
This intermediate puzzle (rating 1617) 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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