Solution
40… ♜f1+ 41. ♚g2 a1=♛ 42. d6+ ♚b6 43. d7 ♜g1+ 44. ♚h2 ♜h1+
The position
This advanced puzzle (rating 2083) asks Black to move to find the winning idea. It features these themes: Promotion, Clearance.
It is Black to move. Look for the tactic hiding in the position — Promotion, Clearance. 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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