Catalan Opening Clearance in Chess

Catalan opening clearance is the tactical/positional idea of clearing a key line or square in a Catalan structure—most often by playing a freeing pawn move like d4-d5 (or the related c-pawn clearance) to open lines for your bishop and queen. The defining feature is that the move removes a “blocker” so your pieces can activate without losing the Catalan’s central control.