Learn How to Win Endgames: Hanging Piece
This chess endgame is a classic example of how one loose piece can decide the whole game. Even when the material balance looks close, an undefended bishop or pawn can be the trigger for a forced win. In classical chess, king activity becomes a major weapon in the endgame, and the side with the more active king can often convert a tactical shot into a tablebase win. Here, the key idea is to notice the hanging piece before thinking about pawn races.