Solution
39… ♜xh4+ 40. ♚c5 ♜h5+ 41. ♚c6 ♜xa5 42. f8=♛+ ♚xf8
The position
This intermediate puzzle (rating 1454) asks Black to move to find the winning idea. It features these themes: Skewer, Rook Endgame.
It is Black to move. Look for the tactic hiding in the position — Skewer, Rook 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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