QGD: 3.Nc3 Bb4

Before the first move

The Queen's Gambit Declined is a cornerstone of classical chess. In this variation, White applies immediate pressure on the center while Black counters with solid development, eventually pinning White's knight to create a complex, strategic struggle for control over the central squares.

1. d4White · your move

Push your pawn to d4. This move claims central space, opens lines for your queen and dark-squared bishop, and establishes a solid foundation for your opening strategy.

1... d5Black

Black replies with d5, establishing a symmetrical presence in the center. While moves like Nf6 lead to more fluid Indian Defenses, or the Englund Gambit with e5 attempts to shock White, d5 remains the most principled and reliable response.

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 to challenge Black's center. This is the Queen's Gambit. You are pressuring the d5 pawn, aiming to trade a flank pawn for a central one to gain better control of the middle.

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

2... e6Black

Black chooses the Queen's Gambit Declined with e6. This is incredibly solid compared to the Slav Defense with c6 or the Chigorin Defense with Nc6. It signals that you are ready for a long, strategic battle rather than a sharp tactical skirmish.

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. Nc3White · your move

Develop your knight to c3. This piece adds direct pressure to the d5 square and prepares for further central expansion. It is a natural and aggressive developing move in this structure.

Other paths here: Bf4 (QGD: 3.Bf4) · cxd5 (QGD: 3.cxd5) · e3 (QGD: 3.e3) · g3 (QGD: 3.g3)

3... Bb4Black

Black plays Bb4, a sharp and modern approach. Instead of the standard Be7 or the Tarrasch Defense with c5, this move actively pins the knight to the king. You are forcing White to address the pressure on c3 immediately.

Other paths here: Nc6 (QGD: 3.Nc3 Nc6) · Be7 (Queen's Gambit Declined: Charousek Variation) · a6 (Queen's Gambit Declined: Janowski Variation) · c6 (Semi-Slav Defense: Accelerated Move Order)

Where you stand

The position is rich with possibilities. White must decide whether to resolve the central tension or defend the pinned knight, while Black aims to complete development and perhaps challenge the center further with c5. Both sides have clear paths to a balanced but fighting middle game.

• c1-f4 Develop the dark bishop to an active diagonal.
• g1-f3 Bring the knight out to support the center.
• c7-c5 Strike at the center to challenge White's d4 pawn.
• g8-f6 Develop the kingside knight and prepare to castle.