Solution
21… ♜b1 22. e4 ♜xd1+ 23. ♝xd1 ♜b1 24. ♜a8+ ♚h7 25. ♜d8 ♝g4
The position
This easy puzzle (rating 1371) asks Black to move to find the winning idea. It features these themes: Pin, Clearance.
It is Black to move. Look for the tactic hiding in the position — Pin, 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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