Sicilian Defense Mengarini Variation Puzzle (Rated 1019): Skewer — Decisive Material Gain

This middlegame puzzle is a classic example of a skewer leading to decisive material gain. The key idea is that a forcing check can drag the king onto a vulnerable square, exposing a valuable piece behind it. When the king is forced to move, the line opens and the hidden target becomes available. In practical classical chess, these patterns often appear when rooks are active on open files and the opponent’s king is still in the center.