Solution
17. ♝g5+ ♚c8 18. ♜e7 ♛f5 19. ♛xf5+ gxf5 20. ♜xg7
The position
This intermediate puzzle (rating 1725) 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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