Solution
20. d5+ ♚xe5 21. ♞c6+ ♚d6 22. ♝a3+ ♚d7 23. ♜xf7+
The position
This expert puzzle (rating 2314) asks White to move to find the winning idea. It features these themes: Middlegame.
It is White to move. Look for the tactic hiding in the position — Middlegame. 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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