Learn How to Underpromote: Mate in 8
This chess endgame is a classic example of how a passed pawn can become more powerful as a minor piece than as a queen. Underpromotion is often the key when promoting to a queen would fail to give the right check, block a mating net, or allow the defender extra resources. Here, the winning idea is built around precise rook activity, forcing checks, and a coordinated attack on the enemy king.