Solution
35… ♜xc1 36. ♚xc1 ♝a3 37. ♚b1 ♝xb2 38. ♚xb2 ♚f6
The position
This advanced puzzle (rating 1844) asks Black to move to find the winning idea. It features these themes: Sacrifice, Pin.
It is Black to move. Look for the tactic hiding in the position — Sacrifice, 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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