Closed positions
What is a closed chess position
A chess position can be classified as closed of open based on the pawn structure. Pawns play an integral role in most positions, as they act as a shield that prevents the opponent's pieces from entering your territory. A closed position is characterized by a large number pawns from both players that stand in front of each other and prevent each other from moving forward.
Strategies
Many chess players like playing closed positions, as they allow them to develop long-term strategies without having to worry about an immediate attack from the opponent. Hence, it is can be wiser not to rush directly with an attack, but to optimize the position of the own pieces plan carefully before unleashing an attack. In many cases, an attack can involve sacrificing a piece in order to damage the opponent's pawn chain.