Old Sicilian Puzzle (Rated 876): Win Material — Discovered Attack

This middlegame puzzle shows how a well-timed discovered attack can turn active piece placement into a decisive material win. White’s bishop on the d-file creates direct pressure on the enemy king and queen, while the queen and rook are lined up to exploit the resulting tactical overload. The key idea is that one forcing move can expose a hidden attack and leave the defender unable to cover both king safety and material loss at once.