This opening is defined by the position shown on the board below. The moves displayed are a typical sequence that leads to it, but different sequences can reach the same position and still carry the same opening name.
Opening Name: Queen's Gambit Declined: Semi-Tarrasch, 5.e3 a6 6.cxd5 exd5
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 a6 6. cxd5 exd5
Description: The Semi-Tarrasch Defense is a flexible and dynamic variation of the Queen's Gambit Declined. By playing 5...a6, Black prepares to support the ...c5 pawn break and discourages White’s knights or bishops from occupying b5. After White exchanges on d5 with 6.cxd5 exd5, Black accepts an isolated or backward d-pawn structure but gains active piece play and open lines for the bishops. White aims to maintain central tension and solid development.
Characteristic of the Move 5...a6: The move 5...a6 is a prophylactic and preparatory move. It prevents White’s pieces from jumping to b5 and prepares ...c5 support or expansion on the queenside. This subtle waiting move keeps options flexible for Black’s plan.
Attacking or Defensive: From White’s perspective, this line is mildly positional and strategic, aiming to control and exert pressure on the center and d5 pawn. White’s setup is more solid than aggressively attacking at this stage. Black chooses an active but somewhat defensive stance, accepting structural concessions (like isolated or backward pawns) in exchange for piece activity.
Center Control: This opening is very much about contesting the center. Both sides fight for control of the critical d4 and d5 squares. The exchange on d5 opens the position and leads to a dynamic struggle over the center, with both White and Black having chances to influence central squares.
You can also discover how top players used QGD: Semi-Tarrasch, 5.e3 a6 6.cxd5 exd5 to leverage key strategies to secure victories in these classic matchups.