Queens Gambit Declined Orthodox Defense Clearance in Chess

In the Queens Gambit Declined Orthodox Defense, “clearance” is a tactical/strategic motif where one side removes a piece or pawn that blocks a key line (often for the queen, bishop, or rook) so an important follow-up becomes possible. A defining feature is the QGD structure where Black’s pieces must coordinate around the c- and e-files, commonly after moves like ...e6 and ...Be7 with the center still tense.