Learn How to Spot Underpromotion: Mate in 2
This chess endgame is a classic underpromotion puzzle: the obvious promotion is not the strongest choice, because the promoted piece must give immediate mating power. In positions like this, the advanced pawn is the key tactical resource, but the real lesson is to look beyond a queen. Sometimes a knight promotion creates a direct check or a mating net that a queen cannot. That is the essence of a precise tactical refutation in classical chess.