Solution
19. exd6 ♝d4+ 20. ♚h1 ♜xb1 21. ♜xb1
The position
This intermediate puzzle (rating 1733) asks White to move to find the winning idea. It features these themes: Middlegame, Fork.
It is White to move. Look for the tactic hiding in the position — Middlegame, Fork. 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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