ECO code: D50
Opening Name: Queen's Gambit Declined: 4.Bg5 Bb4
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Bb4
Description: This line arises from the classical Queen’s Gambit Declined, where White develops the bishop to g5, pinning Black’s knight on f6. Black responds actively with 4...Bb4, known as the Cambridge Springs Defense setup. The move Bb4 puts immediate pressure on White’s knight on c3, indirectly challenging White’s control of the center and preparing to undermine White’s center with potential ...c5 breaks.
Characteristic: The key characteristic of 4...Bb4 is that it applies tactical pressure by pinning and threatening the knight on c3, which supports White’s center pawns. This move aims to create tension early and often leads to complex middlegame positions.
Attacking or Defensive: Black’s 4...Bb4 is an attacking move, seeking active counterplay against White’s setup. White’s 4.Bg5 is also somewhat aggressive, as it pins Black’s knight and tries to exert control over the center and kingside.
Center Control: Both sides focus on the center: White occupies it with pawns on d4 and c4, while Black challenges this control indirectly through piece pressure and plans to break with ...c5. Overall, the opening is centered around fighting for and undermining control of the center.
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.
Practice puzzles and train your tactics with real positions from games that used the QGD: 4.Bg5 Bb4, and sharpen your opening mastery.
Puzzle 1 of 18 - Move #6 white