Catalan: 4...c5 5.Nf3

Before the first move

The Catalan is a sophisticated blend of the Queen's Gambit and a Kingside Fianchetto. By placing your bishop on g2, you exert long-range pressure on the center and the queenside. Black often counters by challenging the center immediately, leading to rich strategic battles where piece activity often outweighs pawn structure.

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. You are setting the stage for a solid, positional game where you control the tempo from the start.

1... Nf6Black

Black replies Nf6, the main line of the Indian Defenses. This move is highly flexible, though you might also encounter the King's Pawn-style Englund Gambit or the solid Horwitz Defense with e6. By developing the knight, Black maintains a watchful eye on the e4 and d5 squares.

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

2. c4White · your move

Advance your pawn to c4. This is the hallmark of the Queen's Gambit family, putting pressure on d5 and preparing to develop your knight behind the pawn. You are building a powerful central presence and preparing to expand on the queenside.

Other paths here: f4 (Canard Opening) · g4 (Indian Defense: Gibbins-Weidenhagen Gambit) · e4 (Indian Defense: Omega Gambit) · d5 (Indian Defense: Pawn Push Variation)

2... e6Black

Black chooses e6, a solid and classical response. This move keeps the center stable while preparing for development. Other sharp tries here include the Mexican Defense with Nc6 or the Queen's Indian Accelerated with b6, but e6 remains the most reliable foundation.

Other paths here: g5 (Indian Defense: Medusa Gambit) · b5 (Indian Defense: Pyrenees Gambit) · a6 (Indian: 2.c4 a6) · Nc6 (Mexican Defense)

3. g3White · your move

Push your pawn to g3. This move signals your intent to play the Catalan. You are preparing to fianchetto your bishop to g2, where it will exert immense pressure along the long h1-a8 diagonal, targeting Black's queenside long-term.

Other paths here: Qb3 (Indian Defense) · g4 (Indian Defense: Devin Gambit) · Bg5 (Indian Defense: Seirawan Attack) · a3 (Queen's Pawn: Anti-Nimzo-Indian)

3... d5Black

Black plays d5, accepting the central challenge. This is the most principled response, though players also experiment with the Hungarian Gambit or the sharp 3...Bb4+ check. By placing a pawn on d5, Black ensures they aren't simply pushed off the board.

Other paths here: e5 (Catalan Opening: Hungarian Gambit) · Bb4+ (Catalan: 3...Bb4+) · c5 (Catalan: 3...c5) · c6 (Catalan: 3...c6)

4. Bg2White · your move

Fianchetto your bishop to g2. This is the soul of your setup. From this square, your bishop breathes fire down the long diagonal, making it difficult for Black to develop their queenside comfortably. You are now ready to castle and complete your development.

Other paths here: Nf3 (Catalan: 4.Nf3)

4... c5Black

Black strikes with c5, a sharp and modern approach. Instead of the more passive Be7 or the solid c6, Black immediately challenges White's central control. This leads to an open game where both sides must calculate carefully to maintain the balance.

Other paths here: Bb4+ (Catalan: 4...Bb4+) · c6 (Catalan: 4...c6) · dxc4 (Catalan Opening: Open Defense) · Be7 (Catalan: Closed)

5. Nf3White · your move

Develop your knight to f3. You are reinforcing your center and preparing to castle. By ignoring the tension for a moment, you maintain your flexibility and keep the pressure on Black's central pawns while bringing another piece into the game.

Where you stand

The position is highly tactical despite its solid appearance. White will likely castle soon and look to exploit the pressure of the g2 bishop. Black must find a way to develop the queenside, often by trading pawns in the center. Both sides have clear paths to a complex middlegame where deep positional understanding is rewarded over raw aggression.

• e1-g1 Castle to secure the king
• c4-d5 Trade pawns to open the diagonal
• c5-d4 Release central tension by capturing
• f8-e7 Develop the bishop and prepare castling
• b1-c3 Bring the knight to its natural square