A passed pawn is a pawn that has no enemy pawns blocking its path to promotion. In the game of chess, passed pawns can be a powerful weapon, as they can quickly create threats and lead to a decisive advantage. However, they can also be a challenge to handle, as they require a different approach compared to other pawns. The key to playing with passed pawns is to understand their potential and to know how to protect them. A passed pawn can be used to create pressure on the enemy king, to control important squares, or to create tactical opportunities. In this video, Grandmaster R B Ramesh explains the key concepts through an illustrative game played between Korchnoi and Najdorf in 1971.