Solution
40… dxc5 41. bxc5 ♞b7 42. c6 ♞d6 43. c5 ♞f5+
The position
This expert puzzle (rating 2388) asks Black to move to find the winning idea. It features these themes: Knight Endgame.
It is Black to move. Look for the tactic hiding in the position — Knight Endgame. 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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