QGA: 4.Nc3 a6

Before the first move

The Queen's Gambit Accepted is a bold choice where Black captures the c4 pawn to challenge White's central control immediately. In this specific line, White develops naturally while Black prepares a flexible setup with a6, intending to expand on the queenside or challenge the center later.

1. d4White · your move

Push your pawn to d4. This classic opening move claims space in the center and opens pathways for your queen and dark-squared bishop. It is the foundation of many solid and aggressive systems for White.

1... d5Black

Black replies with d5, meeting d4 head-on. This is the most principled response, though players sometimes experiment with the Englund Gambit or the Horwitz Defense to steer the game into less theoretical territory.

Other paths here: Na6 (Australian Defense) · g5 (Borg Defense: Borg Gambit) · b6 (English Defense) · e5 (Englund Gambit)

2. c4White · your move

Offer the c4 pawn. This is the Queen's Gambit. You are offering a side pawn to lure Black's center pawn away from d5, which will eventually allow you to dominate the center with your e-pawn.

Other paths here: Qd3 (Amazon Attack) · e4 (Blackmar-Diemer Gambit) · e3 (Queen's Pawn Game) · Bf4 (Queen's Pawn Game: Accelerated London System)

2... dxc4Black

Black accepts with dxc4. This is the Queen's Gambit Accepted. While many players prefer the solid declined lines like the Chigorin or the Austrian Defense, accepting the pawn leads to an open and tactical game.

Other paths here: c5 (Queen's Gambit Declined: Austrian Defense) · Bf5 (Queen's Gambit Declined: Baltic Defense) · Nf6 (Queen's Gambit Declined: Marshall Defense) · b5 (Queen's Gambit Declined: Zilbermints Gambit)

3. Nf3White · your move

Develop your knight to f3. This is a flexible move that controls the e5 square and prevents Black from immediately striking back with e5. It also prepares for your kingside castling.

Other paths here: Nc3 (QGA: 3.Nc3) · Qa4+ (Queen's Gambit Accepted: Accelerated Mannheim Variation) · e3 (Queen's Gambit Accepted: Old Variation) · e4 (Queen's Gambit Accepted: Saduleto Variation)

3... Nf6Black

Black develops with Nf6, mirroring White's knight move. This is the most solid path, though more provocative tries like the Slav Gambit with b5 or the Gunsberg Defense with c5 are also seen in master-level play.

Other paths here: Bg4 (QGA: 3.Nf3 Bg4) · Nd7 (Queen's Gambit Accepted: Godes Variation) · c5 (Queen's Gambit Accepted: Gunsberg Defense) · e6 (Queen's Gambit Accepted: Rosenthal Variation)

4. Nc3White · your move

Move your knight to c3. You are increasing your control over the d5 and e4 squares while preparing to eventually recapture the c4 pawn. This adds more pressure to the center and develops another piece.

Other paths here: g3 (QGA: 3.Nf3 Nf6 4.g3) · Qa4+ (Queen's Gambit Accepted: Mannheim Variation) · e3 (Queen's Gambit Accepted: Normal Variation)

4... a6Black

Black plays a6, a flexible waiting move that prepares for queenside action. You could also challenge the center immediately with c5 or play e6 to solidify, but a6 keeps White guessing about your final setup.

Other paths here: c5 (QGA: 4.Nc3 c5) · Nd5 (QGA: 4.Nc3 Nd5) · e6 (QGA: 4.Nc3 e6 5.Bg5)

Where you stand

The position is balanced but full of tension. White will likely play a4 to restrain Black's queenside expansion before trying to regain the c4 pawn with e3 or e4. Black aims to complete development and eventually challenge White's center with c5. Both sides must balance piece activity with the structural battle over the extra c-pawn.

• a2-a4 Prevent Black from playing b5 expansion
• e2-e4 Build a strong central pawn duo
• c7-c5 Strike at the white center pawns
• b8-c6 Develop the knight to pressure d4