Slav: 4.Nc3 Bf5

Before the first move

The Slav Defense is a rock-solid response to the Queen's Gambit, where Black uses the c-pawn to bolster the center. In this specific line, Black develops the light-squared bishop early to f5, aiming for an active piece setup while maintaining a sturdy pawn structure. You'll navigate a battle of central control and piece coordination.

1. d4White · your move

Move your pawn to d4 to claim control of the center and open lines for your queen and dark-squared bishop. This classic opening move establishes a presence in the heart of the board and prepares for a strategic battle.

1... d5Black

Black replies d5, meeting White's central claim head-on. This is the starting point for many classical openings. While d5 is the main choice, you might also encounter the Nimzo-Indian with Nf6, the Dutch Defense with f5, or even the offbeat b6 English Defense.

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

2. c4White · your move

Slide your c-pawn to c4 to challenge Black's central pawn on d5. This is the Queen's Gambit, offering a pawn to gain better control of the center and open the c-file for your heavy pieces later.

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

2... c6Black

Black plays c6, entering the Slav Defense. This is a very sturdy way to defend d5. Other moves like e6 lead to the Queen's Gambit Declined, while Nf6 leads to the Marshall Defense, and the sharp b5 is the Zilbermints Gambit.

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 improving move that controls the e5 and d4 squares and prepares for kingside castling. It keeps your options open while applying pressure to the center.

Other paths here: Nc3 (Slav Defense) · e4 (Slav Defense: Diemer Gambit) · cxd5 (Slav Defense: Exchange Variation) · Bf4 (Slav: 3.Bf4)

3... Nf6Black

Black plays Nf6, continuing natural development. This is the most common move, though Black can also try the immediate Bf5 or Bg4 to challenge White's knights. The move e6 would transition into the Semi-Slav complex.

Other paths here: Bf5 (Slav: 3.Nf3 Bf5) · Bg4 (Slav: 3.Nf3 Bg4) · dxc4 (Slav: 3.Nf3 dxc4) · e6 (Semi-Slav Defense: Chigorin Defense)

4. Nc3White · your move

Develop your knight to c3 to increase the pressure on d5. This move adds a second attacker to the center and prepares to potentially expand with e4 if Black allows it.

Other paths here: Bg5 (Slav Defense: Bonet Gambit) · Nbd2 (Slav Defense: Breyer Variation) · e3 (Slav Defense: Quiet Variation) · Qb3 (Slav: 4.Qb3)

4... Bf5Black

Black plays Bf5, a proactive move that characterizes this variation. Black develops the bishop before locking the structure with e6. Alternatives include the popular a6 Chebanenko, the g6 Schlechter, or the solid e6 Semi-Slav.

Other paths here: a6 (Slav Defense: Chebanenko Variation) · g6 (Slav Defense: Schlechter Variation) · Qb6 (Slav Defense: Süchting Variation) · dxc4 (Slav Defense: Two Knights Attack)

Where you stand

The position is balanced but full of tension. White will likely try to exploit the slight weakness on b7 now that the bishop has left f5, often by playing cxd5 followed by Qb3. Black intends to solidify with e6 and develop the remaining pieces, maintaining a very solid and active setup that is difficult to break down.

• c4-d5 Trade pawns to open the c-file
• d1-b3 Attack the undefended b7 pawn
• e7-e6 Solidify the center and free the bishop
• f8-e7 Prepare for kingside castling
• c3-b5 Knight jump to pressure the queenside