Learn How to Skewer: Decisive Material Gain
This chess endgame puzzle is a classic example of a crushing skewer: a forcing rook move creates a direct check while lining up a more valuable piece behind it. The key idea is that the checking piece is not just giving king trouble; it also exposes a hidden tactical target. In simplified positions, rook activity and king placement often decide everything, and here the active rook wins material by exploiting a vulnerable back rank and an overloaded defender.