Solution
28. ♛a5+ b6 29. ♛xa7+ ♚d6 30. ♛d7#
The position
This intermediate puzzle (rating 1749) asks White to move to find the winning idea. It features these themes: Mate in 3.
It is White to move. Look for the tactic hiding in the position — Mate in 3. 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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