Queens Gambit Declined Orthodox Defense Discovered Attack in Chess

In the queens gambit declined orthodox defense, the discovered attack motif arises when White plays a move like c4xc5 or c4-c5 (or a related pawn/line opening) that suddenly reveals an attack from a piece behind it—often the queen or a bishop—onto a target. The defining feature is that the “attacking line” was blocked, and the orthodox setup (…Be7/…O-O/…c6) makes the reveal tactical rather than quiet. The result is a discovered attack that can win material or force a decisive improvement in tempo.