Nimzo-Indian Defence
The greatest of all Indian defences: ...Bb4 fights for e4 and offers structure for the bishop pair — a century of world champions.
Nimzo-Indian Defence belongs in every serious player's toolbox: a system with real teeth, clear ideas and a pedigree stretching back decades.
After 7.O-O the position resolves into a tense centre: the central pawns still face each other, and the timing and manner of the coming exchange shapes the whole middlegame.
The moves
After 7. O-O — Nimzo-Indian Defence main line
Position breakdown
A factual read of the position after the main line — the files, the centre, the pawn structure and king safety that decide how the middlegame is played. These are computed from the actual board, not generic advice.
Files
Centre control
Tense centre
The d4/d5/e4/e5 squares — who occupies the centre decides how open the game becomes.
Pawn skeleton
Pawns only — the structure that explains every open file and majority at a glance.
Material level
Queenside pawns 3–3
Kingside pawns 3–3
Development
2 knights & light-squared bishop active
Knight & dark-squared bishop active
King safety
White king g1
Castled kingside
Black king g8
Castled kingside
Computed from the final position of the main line above — 13 plies, black to move.
Strategic ideas
Ideas for White
White aims for harmonious development, central control and well-timed pawn breaks.
Ideas for Black
Black targets the centre with counterplay, seizes outposts and strikes with the thematic pawn breaks.
Main variations (82)
Rubinstein Variation
E40The modern workhorse: solid, flexible, and rich in hanging-pawn and IQP structures.
Rubinstein, 4...c5
E41The ...c5 setup: doubled pawns for White, dark-square strategy for Black.
Rubinstein, 5.Ne2
E42The Ne2 retreat: flexible regrouping while avoiding the pin.
Classical Variation
E32Capablanca's Qc2: defend e4 without concessions — the purest strategic duel.
Classical, Noa Variation
E34The Noa line: the centre opens at once and the Bxc3 decisions shape everything.
Sämisch Variation
E24The Sämisch: wreck Black's bishop, build the big centre, aim for e4 space.
Sämisch, Keres Setup
E25The f3/e4 build-up: the Sämisch's dream centre with big pawns and dark squares.
Leningrad Variation
E30The Leningrad's Bg5: develop with tempo, lock the centre, win the bishop pair.
Three Knights Setup
E21The Nf3 setup: defend e4 without queen commitments — flexible and solid.
Gligorić System
E54Gligorić's smooth system: the universal answer to Black's main setups.
Kmoch Variation
E21The g3 fianchetto setup — a solid Nimzo treatment with Bg2 pressure.
Reshevsky Variation
E54Reshevsky's precise regrouping: ...Nc6/...dxc4 and the c-file pressure.
Fischer Setup
E54The Bd3-retreat setup: keeping the bishop aimed at h7 for the attack.
Bernstein Variation
E40The Nge2 setup: maximum flexibility against the pin structure.
Nimzo, Spielmann Variation
E22The Spielmann line: an early structural decision with open lines.
Nimzo, Hübner Setup
E41The ...b6 QID-hybrid structure — Nimzo meets Queen's Indian harmonies.
Nimzo, 4.Qb3 Setup
E20The Qb3 probe:hitting b7 and d5 with tempo.
Nimzo, 4.4.Qc2 Nc6
E33The ...Nc6 development: flexible, keeping ...e5 and ...d5 in reserve.
Nimzo, Rubinstein 5.Bd3 d5
E40The classical Rubinstein centre: the main strategic battleground.
Nimzo, Rubinstein 6.a3 Bxc3
E40The a3 trade: the doubled-pawn structure at its purest.
Nimzo, Rubinstein 5.Nge2
E40The Nge2 retreat: maximum flexibility against the pin.
Nimzo, Rubinstein 4...c5
E41The ...c5 strike: immediate central tension in the Rubinstein.
Nimzo, Classical 4...d5
E32The Noa centre: the classical battleground of the Qc2 Nimzo.
Nimzo, Classical 5.a3
E32The a3 trade decision: the Sämisch-style structure inside the Classical.
Nimzo, Classical 4...c5
E38The ...c5 counter: immediate central tension against Qc2.
Nimzo, Leningrad 4...c5
E30The ...c5 strike against the Leningrad's Bg5 setup.
Nimzo, Sämisch 5...c5
E24The ...c5 strike: hitting the big centre at once.
Nimzo, Sämisch 6.e3
E27The quiet e3 setup: solid development in the Sämisch structure.
Nimzo, Three Knights 4...c5
E21The ...c5 strike against the Three Knights setup.
Nimzo, Gligorić 6...d5
E54The Gligorić centre commit: the full main structure.
Nimzo, Gligorić 6...c5
E53The ...c5 strike: immediate tension in the Gligorić setup.
QID, Fianchetto 5.Bg2 Setup
E15The pure fianchetto setup: the QID's signature structure.
QID, Capablanca 7.d5
E16Capablanca's strike: the central explosion in the QID.
QID, Classical 7...Ne4
E17The ...Ne4 outpost: the classical QID's key manoeuvre.
QID, Petrosian 4...Ba6
E12The Petrosian structure: clean trades and long-term pressure.
QID, 4.Nc3 Bb4
E13The Bb4 pin against the 4.Nc3 setup: maximum tension.
QID, 4.e3 Setup
E14The classical 4.e3 setup: solid development fighting for e4.
Bogo, Bd2 Be7
E11The main Bogo retreat: the solid ...Be7 structure.
Bogo, Bd2 Qe7
E11The ...Qe7 setup: keeping the pin tension alive.
Bogo, Nbd2 Setup
E11The knight-block: solid and simple against the check.
Catalan, Open 7.Qc2 a6
E02The main Open tabiya: the ...a6/...b5 setup begins.
Catalan, Open 8.a4 Setup
E02The a4 clamp: winning the c4 pawn back immediately.
Catalan, Closed 7.Qc2 c6
E01The ...c6 support: the solid Closed Catalan structure.
Catalan, 5.Qa4+ Setup
E04The queen check: the immediate path to regaining the pawn.
Catalan, Bb4+ 6.Qxc4
E04The clean recapture: the Nbd7 defence executed.
KID, Classical 6...e5
E90The ...e5 break: the classical KID's central counterattack.
KID, Classical 7.d5 Ne7
E90The d5 closure: the eternal KID structure locked in.
KID, Mar del Plata 9.Ne1
E97The Ne1-d3 regrouping: the Mar del Plata's knight manoeuvre.
KID, Bayonet 9.b4
E97The b4 strike: queenside expansion in the Mar del Plata.
KID, Sämisch 6.Be3
E80The Be3 development: the Sämisch's standard fortress build-up.
KID, Sämisch 7.d5
E81The d5 clamp: closing the centre in the Sämisch structure.
KID, Four Pawns 5.f4
E76The f4 wedge: the Four Pawns' maximalist centre.
KID, Fianchetto 4...O-O5.Bg2 d6 Setup
E62The pure Fianchetto setup: solid development before committing.
KID, Panno 7...a6
E63The Panno's ...a6: the flexible queenside expansion setup.
KID, Averbakh 6.Bg5
E70The early Bg5 pin: the Averbakh's signature harassment.
KID, Four Pawns 6.Nf3 c5
E76The ...c5 strike: the Four Pawns' critical counterattack.
KID, Makagonov h3
E71The h3 prophylaxis: stopping ...Ng4 in the KID main lines.
Blumenfeld, Main 5.Bg5
E60The Bg5 pin: the main treatment of the Blumenfeld gambit.
Blumenfeld, 5...exd5 Setup
E60The central release: the Blumenfeld's forcing lines begin.
KID, Yugoslav 6...c5
E64The ...c5 strike: queenside space in the Fianchetto KID.
KID, Orthodox 9.Ne1
E94The Ne1 manoeuvre: the Orthodox defence's key regrouping.
KID, Petrosian 8.Bg5
E93The Bg5 pin: the Petrosian system's main line pressure.
KID, Sämisch 6...e5 7.Nge2
E84The Nge2 development: the Sämisch's standard regrouping.
KID, Four Pawns 7.d5 e6
E76The ...e6 strike: the Four Pawns' critical counterattack.
KID, ...c5 Setup
E70The ...c5 strike: the Benoni-style counter before the fianchetto.
KID, Fianchetto Yugoslav c5
E64The ...c5 setup: the Yugoslav system's queenside expansion.
KID, Classical 9.b4 Bayonet
E97The Bayonet's b4: queenside expansion before the storms.
Catalan, Closed 8.b3 dxc4
E08The b3 pressure: the Closed Catalan's signature squeeze begins.
Catalan, Open 9...b5 10.a4
E05The a4 strike: undermining the queenside chain at once.
Nimzo, Classical 4...O-O 5.a3
E32The a3 trade decision: the Classical's structural crossroads.
Nimzo, Rubinstein 6.a3 Setup
E40The a3 question: the Rubinstein's structural decision point.
QID, 4.g3 Bb7 5.Bg2 Be7 6.O-O
E15The castling-first setup: solid, flexible QID development.
Bogo, ...a5 Setup
E11The ...a5 space setup: queenside expansion before consolidating.
Nimzo, Kmoch g3 Setup
E21The g3 fianchetto: the Kmoch system's solid development.
Catalan, Open Bb4+ Setup
E04The check-first defence: disturbing development early.
Catalan, ...c6 Setup
E04The ...c6 defence: solid expansion against the Catalan bind.
KID, Sämisch ...b6 Setup
E82The ...b6 setup: solid development before the counterstrikes.
KID, Sämisch ...Nc6 Setup
E80The ...Nc6 development: fast piece play against the Sämisch.
KID, Zinnowitz Setup
E80The Zinnowitz's Nge2: the flexible Sämisch regrouping.
QID, 4.Nc3 Bb4 Setup
E13The Bb4 pin setup against 4.Nc3 — maximum tension early.
KID, Classical ...Nbd7 Setup
E60The ...Nbd7-first setup: flexible development before committing.
Catalan, Open ...b5 9.Bg5
E05The Bg5 pin: the classical pressure build-up in the Open Catalan.
Plans & pawn structures
- 1The central tension is the key decision: releasing it too early hands the opponent a free tempo and a target, so keep it until a capture wins a file, a diagonal or a clear structural edge.
- 2Develop with a purpose: connect the pieces to a concrete plan (a break, a target square, an outpost) instead of making automatic moves.
- 3Watch the pawn breaks — both yours and your opponent's. In these structures the player who times the central break better usually wins the game.
Typical middlegame structures
The main line leads to a tense centre: the central pawns still face each other, and the timing and manner of the coming exchange shapes the whole middlegame. No files have opened yet, so this is a manoeuvring struggle: improve your pieces and prepare the pawn break that will open the position on your terms.
Traps & tactical motifs
Every sharp opening has its traps — study the forcing lines around the centre and the f7/f2 squares before playing this in rated games.
Watch the typical motifs: pins against the pinned piece, knight forks after the natural captures, and queen sorties to a2/g2-style squares.
How to Play Against the Nimzo-Indian Defence
- As White, resolve the central tension on your terms: force the exchange that gives you the better structure rather than letting the opponent choose the moment.
Reaches the same position as
These openings arrive at the very same board position by a different move order — a transposition. Knowing them lets you steer between systems and recognise when your opponent has walked into familiar territory.
Study plan & who it's for
Solidly intermediate. The main lines require real study, but the payoff is positions you can play for a lifetime. Best investment for Black players around 1400–2000.
Play through the main line above until the piece setup feels natural.
Learn the two or three critical pawn breaks for both sides.
Drill one variation at a time — always connecting moves to plans.