Nimzo-Indian Defense: Classical Variation, Berlin Variation

Before the first move

The Nimzo-Indian Classical Variation is a sophisticated battle for central control. White uses the queen on c2 to avoid doubled pawns and keep flexibility, while Black immediately challenges the center with pieces and pawns to prevent White from building a massive space advantage.

1. d4White

White plays d4, the most common way to start a closed game. By occupying the center, White prepares to develop the queenside and restricts your ability to easily place a pawn on e5 or c5.

1... Nf6Black · your move

Develop your knight to f6. This is a flexible response that prevents White from playing e4 and keeps your options open for several different defensive setups against the d4 opening.

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

2. c4White

White plays c4, expanding on the queenside and preparing a full central presence. You'll often see White try to follow up with Nc3 to reinforce d5, though alternatives like g3 or Nf3 are also common.

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 · your move

Push your pawn to e6. This opens the diagonal for your dark-squared bishop and prepares to challenge the center. It is a solid, classic move that leads into the Nimzo-Indian or Queen's Gambit.

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

3. Nc3White

White plays Nc3, threatening to take full control with e4. This is the critical moment where you must decide how to react. Alternatives like Nf3 or g3 avoid the pin but allow you more freedom.

Other paths here: g3 (Catalan Opening) · Qb3 (Indian Defense) · g4 (Indian Defense: Devin Gambit) · Bg5 (Indian Defense: Seirawan Attack)

3... Bb4Black · your move

Develop your bishop to b4 and pin that knight to the king. This is the defining move of the Nimzo-Indian, neutralizing White's threat of e4 and creating immediate tactical pressure on the queenside.

Other paths here: b6 (Queen's Pawn: Neo-Indian, 3...b6) · c5 (Queen's Pawn: Neo-Indian, 3...c5) · d5 (Queen's Gambit Declined: Exchange Variation)

4. Qc2White

White plays Qc2, the most ambitious way to meet the Nimzo-Indian. White wants the bishop pair without the structural damage of doubled pawns. You'll see this often, alongside the Kmoch Variation with f3 or the Romanishin with g3.

Other paths here: f3 (Nimzo-Indian Defense: Kmoch Variation) · Qd3 (Nimzo-Indian Defense: Mikenas Attack) · g3 (Nimzo-Indian Defense: Romanishin Variation) · Bd2 (Nimzo-Indian: 4.Bd2)

4... c5Black · your move

Push your pawn to c5. You are striking at the heart of White's center immediately. This move challenges d4 and opens lines for your queen, forcing White to decide how to maintain their central tension.

Other paths here: b6 (Nimzo-Indian: Classical, 4...b6) · d6 (Nimzo-Indian: Classical, 4...d6) · O-O (Nimzo-Indian: Classical, 4...O-O) · Nc6 (Nimzo-Indian Defense: Classical Variation, Zurich Variation)

Where you stand

The position is rich with tension. White will likely capture on c5 or push d5, while Black aims to finish development and potentially trade the dark-squared bishop for the knight. Both sides must balance king safety with the fight for central space as the game transitions into a complex middlegame.

• c2-c5 Capture on c5 to open the d-file
• b8-c5 Recapture on c5 with the knight
• g1-g2 Develop kingside to prepare for castling
• d7-d5 Challenge the center with the d-pawn