Nimzo-Indian Defense
Move Sequence
d4— Queen's pawn — the foundation of many positional systems.♞f6— Black stops e4 and stays flexible.c4— Classical queen's-pawn theory.e6— Prepares ...Bb4 — the soul of the Nimzo-Indian.♞c3— White invites the famous pin.♝b4— Nimzo-Indian: Black pins the knight and controls e4 indirectly — strategy over theory.
The Nimzo-Indian Defence is one of the most respected openings in chess. It begins with 1.d4 ♞f6 2.c4 e6 3.♞c3 ♝b4 — Black immediately pins the white knight and prevents e2-e4. The opening is named after Aaron Nimzowitsch, the Latvian-Danish grandmaster who developed and systematically played it in the early 20th century.
The most important white continuations are 4.e3 (Rubinstein System), 4.♛c2 (Classical) and 4.a3 (Sämisch).
Strategy
Black sacrifices the bishop pair (via ♝xc3+) to saddle White with doubled pawns on the c-file. This is a characteristic Nimzo-Indian exchange: material (bishop pair) for structural advantage (White's doubled pawn). The resulting positions are strategically rich. Black has a healthy pawn structure and active pieces; White compensates with the bishop pair and more space.
Typical Continuation
In the Rubinstein System (4.e3 O-O 5.♝d3 d5 6.♞f3 c5) a typical, balanced middlegame structure arises. After 7.O-O ♞c6 8.a3 ♝xc3 9.bxc3 White's classic doubled pawns appear. In the Classical System (4.♛c2) White tries to avoid the trade on c3. For players who appreciate structural subtleties, the Nimzo-Indian is one of the most instructive openings available.
Suitable for: Strategic / positional — for players who place structural advantage and piece activity above material equality.