ECO code: A04
Zukertort Opening: Queen's Gambit Invitation (1. Nf3 e6 2. c4 a6 3. Nc3)
This opening begins with White's flexible knight development to f3, followed by an early c4, inviting a Queen's Gambit structure. Black's move 2...a6 is somewhat uncommon and aims to prepare ...b5 or prevent White's pieces from occupying b5. White continues with 3. Nc3, developing the knight and reinforcing control over the central d5 and e4 squares.
Characteristic: The inclusion of 2...a6 by Black is a waiting or preparatory move, slightly sidestepping the main lines of the Queen's Gambit Declined. White's setup with Nf3 and c4 keeps options open and does not commit immediately to the center but prepares for central control.
Attacking or Defensive: For White, this opening is generally attacking in nature, focusing on controlling the center and developing pieces actively. Black's 2...a6 is more defensive or preparatory, aiming to limit White's options and possibly expand on the queenside later.
Center Control: Yes, White aims to control the center indirectly with c4 and knights on c3 and f3, preparing to challenge Black's central presence. Black has not yet contested the center aggressively but prepares for a flexible response.
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.