ECO code: D24
Opening: Queen's Gambit Accepted (QGA): 4.Nc3 a6
Moves: 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6
Description: In the Queen's Gambit Accepted, Black temporarily accepts the c4 pawn to challenge White's central control. By playing 4...a6, Black prepares to support the b5 pawn push, aiming to maintain the extra pawn on the queenside and prevent White’s pieces from easily recovering the pawn. This move is somewhat prophylactic, restricting White's minor pieces from advancing to b5 and preparing counterplay on the queenside.
Characteristic of the move: The move 4...a6 is a flexible waiting move that supports the expansion with ...b5, typical in some QGA variations where Black seeks counterplay on the queenside rather than immediate central confrontation.
Attacking or Defensive: For Black, this is a semi-defensive move that prepares queenside counterattack rather than direct central confrontation. White maintains a slight initiative in the center and development, so White generally plays more actively aiming to regain the pawn and control the center.
Center Control: The opening focuses on fighting for central control early, especially by White. Black’s 4...a6 does not directly contest the center but supports queenside expansion to challenge White’s central dominance indirectly.
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 QGA: 4.Nc3 a6, and sharpen your opening mastery.
Puzzle 1 of 2 - Move #36 black