Solution
40… ♝xg3 41. fxg3 ♜b2 42. ♛b5 ♜xb5
The position
This expert puzzle (rating 2378) 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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