Queen's Gambit Declined: Modern Variation, Knight Defense

Before the first move

The Queen's Gambit Declined: Modern Variation is a sophisticated battle for the center. White applies early pressure with the bishop on g5, pinning the knight, while Black uses the resilient Knight Defense to maintain a solid structure and prepare for a counter-strike in the middle game.

1. d4White

White opens with d4, a hallmark of classical play that immediately controls the center. It is the most popular alternative to e4, favoring long-term structure over immediate piece contact.

1... d5Black · your move

Move your pawn to d5. By mirroring White's move, you prevent them from occupying the entire center with e4 and establish your own foothold in the heart of the board.

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

2. c4White

White plays c4, the signature move of the Queen's Gambit. You must now decide whether to capture it or support your center with moves like e6 or the Slav Defense with c6.

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 · your move

Push your pawn to e6. This move declines the gambit and forms a rock-solid chain that protects d5. It also clears the path for your dark-squared bishop to enter the 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. Nc3White

White develops the knight to c3, increasing the tension on your central pawn. White could also choose the Exchange Variation with cxd5 or the Catalan-style g3, but this is the most direct approach.

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

3... Nf6Black · your move

Bring your knight to f6. This is a vital developing move that defends your d5-pawn and prepares for kingside castling. It keeps your options flexible for the coming struggle.

Other paths here: Bb4 (QGD: 3.Nc3 Bb4) · Nc6 (QGD: 3.Nc3 Nc6) · Be7 (Queen's Gambit Declined: Charousek Variation) · a6 (Queen's Gambit Declined: Janowski Variation)

4. Bg5White

White plays Bg5, the Modern Variation. By pinning your knight, White makes it harder for you to maintain the d5 point. Alternatives like the Harrwitz Attack with Bf4 or the solid Nf3 are also very common.

Other paths here: e3 (QGD: 3.Nc3 Nf6 4.e3) · g3 (QGD: Catalan without Nf3) · Bf4 (Queen's Gambit Declined: Harrwitz Attack) · Nf3 (QGD: 4.Nf3)

4... Nbd7Black · your move

Develop your other knight to d7. This is a clever defensive move; it reinforces the knight on f6 so that if White captures it, you can recapture with a knight rather than ruining your pawns.

Other paths here: Bb4 (QGD: 4.Bg5 Bb4) · c6 (QGD: 4.Bg5 c6) · dxc4 (QGD: 4.Bg5 dxc4) · c5 (Queen's Gambit Declined: Been-Koomen Variation)

Where you stand

The position is rich and balanced. White will likely play e3 and Nf3 to complete development, while Black aims to break the pin with Be7 and eventually challenge the center with c5. Both sides must carefully manage the tension between the d4 and d5 pawns as they prepare for the middle game.

• f1-e2 Develop the bishop to prepare castling
• f8-e7 Break the pin and prepare castling
• g1-f3 Complete kingside development
• c7-c5 Strike at the white center