Nimzo-Indian: 4.e3 c5 5.Bd3

Before the first move

The Nimzo-Indian is a hypermodern masterpiece where Black pins White's knight to control the center indirectly. In the Rubinstein System with 4.e3, White builds a solid, classical center, while Black immediately challenges it with the c5 pawn break. Both sides fight for space and piece activity in a structurally complex battle.

1. d4White · your move

Push your pawn to d4. This move claims central space, opens lines for your queen and bishop, and dictates the pace of the game from the very first move.

1... Nf6Black

Black replies Nf6, the most flexible response to d4. While alternatives like the Englund Gambit or the English Defense exist, this move is the gold standard for high-level play.

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

2. c4White · your move

Push your pawn to c4. This is the hallmark of the Queen's Pawn openings, fighting for more space and preparing to bring your knight out behind the pawn.

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 move that prepares to challenge the center. This often leads to the Queen's Gambit Declined or, as we will see, the Nimzo-Indian if White plays Nc3.

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

3. Nc3White · your move

Develop your knight to c3. This move exerts maximum pressure on the center and prepares the e4 push, though it invites Black to pin the knight with a bishop.

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

3... Bb4Black

Black plays Bb4, entering the Nimzo-Indian Defense. By pinning the knight, you've temporarily halted White's central expansion. Other moves like d5 or c5 would lead to different pawn structures entirely.

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. e3White · your move

Push your pawn to e3. This solidifies your d4 pawn and prepares to develop your kingside bishop. This is the Rubinstein System, valued for its long-term stability.

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

Black strikes back with c5. This is a thematic break in the Nimzo-Indian. You could also choose to castle first or play d5, but c5 immediately challenges White's central foundation.

Other paths here: Nc6 (Nimzo-Indian Defense: Rubinstein System, Taimanov Variation) · b6 (Nimzo-Indian Defense: St. Petersburg Variation) · O-O (Nimzo-Indian Defense: Normal Variation) · d5 (Keres Variation, Nimzo-Indian)

5. Bd3White · your move

Develop your bishop to d3. This is the most active square for the bishop, eyeing the kingside and preparing for castling while supporting the d4 pawn.

Other paths here: Nf3 (Nimzo-Indian: 4.e3 c5 5.Nf3) · Ne2 (Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation)

Where you stand

The position is balanced but full of strategic depth. White will likely develop the kingside knight and castle, while Black must decide whether to trade on c3 or maintain the pin. The central pawn tension between c5 and d4 will dictate the coming maneuvers, with both sides fighting for a slight edge in a rich, middlegame struggle.

• g1-e2 Develop knight to support the center
• e1-g1 Castle kingside for king safety
• d7-d5 Challenge the center with d5
• b4-c3 Trade bishop for knight to double pawns