Queens Gambit Declined Castling in Chess

“Queens gambit declined castling” refers to the castling decisions that arise in QGD positions where Black has declined the gambit and the center is controlled by pawns like …e6 and …c6. A defining feature is that the kingside often cannot castle “on autopilot” because pieces and pawns (especially the c- and e-files) can create tactical pressure or open lines. In practice, the concept is about choosing the correct castling side and timing in these specific QGD structures.