Joseph Henry Blackburne (White) Puzzle: Skewer — King Line

A skewer is a line tactic in which a more valuable piece stands behind a target that must move first. In this middlegame position, Black’s active rook and bishop create severe pressure against the exposed white king. The forcing check compels the king away from the line, leaving the queen behind it vulnerable. Although White has extra material, king safety and piece activity can outweigh that advantage when a forcing tactical sequence is available.