Sicilian Defense Clearance Puzzle (Rated 1180): Use Discovered Attack — Decisive Material Gain
This puzzle is a classic example of a discovered attack in a sharp middlegame-to-endgame transition. The key idea is to use a forcing pawn advance to open a line for a long-range piece, creating direct pressure on the enemy queen and king at the same time. Because the position is already tactically loaded, the best move is not a quiet improving move but a forcing one that changes the geometry of the board and wins time with check.