Introduction for Catalan Chess Opening

The Catalan Opening is a chess opening that arises after the following moves:
1. d4 Nf6
2. c4 e6
3. g3
This opening is named after the Catalonia region of Spain. It's known for its solid and strategic nature, with White aiming for control of the center and long-term piece activity. The Catalan often leads to positions with a closed center and can transpose into various pawn structures.
Common lines include 3...d5, leading to a Queen's Gambit Declined type of structure, or 3...c6, which can lead to setups where Black fianchettos the dark-squared bishop. The Catalan is a flexible and respected opening choice at all levels of play.