Learn How to Underpromote: Decisive Endgame Fork
This chess endgame is a classic example of how an advanced pawn can decide the game even when the material balance looks hopeless. The key idea is that promotion is not always best: sometimes a knight underpromotion creates a forcing check and a fork that wins the enemy queen. In classical chess, these quiet-looking endgame resources are often stronger than a simple queen promotion because they combine tempo, king activity, and tactical precision.