King's Indian Defence
The King's Indian: surrender the centre, castle, then detonate with ...e5 and a full-scale pawn storm.
Few openings have shaped modern chess as much as King's Indian Defence. It has decided world championships, club trophies and late-night blitz games alike.
After 3…Bg7 the position resolves into a fluid centre — one side has staked a central pawn the other must decide how to challenge, so the structure is still being negotiated.
The moves
After 3... Bg7 — King's 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
Fluid 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
Knight active
Knight & dark-squared bishop active
King safety
White king e1
Uncastled — take care
Black king e8
Uncastled — take care
Computed from the final position of the main line above — 6 plies, white 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 (25)
Mar del Plata Variation
E97The most romantic mainstream opening: mutual pawn storms locked in combat.
Bayonet Attack
E97The b4 strike: queenside expansion before the storms lock in.
Sämisch Variation
E80The solid modern main line: f3/Be3 fortify before the long squeeze.
Sämisch, Main Line
E84The classical build-up: Qd2, O-O-O and the h4-h5 storms.
Classical Variation
E90The classical main line: undiluted queenside versus kingside warfare.
Orthodox Variation
E94The ...f5 break arrives: the classical kingside avalanche.
Petrosian System
E92The immediate closure: queenside space for White, kingside attacks for Black.
Four Pawns Attack
E76White's maximalist centre: four pawns and a space race full of targets.
Fianchetto Variation
E62The positional antidote: Bg2 opposes the g7 bishop in manoeuvring battles.
Fianchetto, Panno Variation
E63The Panno: ...Nc6/...a6 with ...Rb8 and ...b5 expansion — flexible and modern.
Fianchetto, Yugoslav System
E64The Yugoslav setup: ...c5 grabs queenside space early.
Averbakh System
E70The early Bg5: harassing the knight and preparing the central clamp.
Makagonov Attack
E71The h3 prophylaxis: stopping ...Ng4 and building the slow squeeze.
Zinnowitz Variation
E80The ...Nc6 setup against the Sämisch: fast development for the counterattack.
KID, Benoni Formation
E70The ...c5 strike: the Benoni-style counter before the kingside fianchetto.
KID,Bronstein Setup
E60The ...Nc6-first setup: maximum flexibility before the centre commits.
Mar del Plata, Old Main
E98The ...Ne8 regrouping: the knight re-routes as the storms build on both wings.
Mar del Plata, f5 Eruption
E99The full eruption: ...f5 against c5-c6 — pure attacking chess, no mercy.
KID, Orthodox Main
E95The exchange-release line: open f-file tactics in the Orthodox structure.
KID, Bg5 Pin System
E93The Bg5 pin: pressuring f6 before the kingside storms arrive.
Sämisch, ...b6 Setup
E82The ...b6 setup: solid, flexible development before the counterstrikes.
Sämisch, ...Nc6 Setup
E80The ...Nc6 development: fast piece play against the Sämisch build-up.
Blumenfeld Main
E60The Bg5 pin: the modern main treatment of the gambit.
Blumenfeld, a3 Setup
E60The main-line tabiya: structural tension with forcing lines available.
Blumenfeld Deferred
E10The deferred version: ...b5 before ...c5 — a different move-order animal.
Plans & pawn structures
- 1The centre is still fluid: decide early whether to lock it with a pawn advance or dissolve it with an exchange, because that choice picks the whole middlegame plan for you.
- 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 fluid centre — one side has staked a central pawn the other must decide how to challenge, so the structure is still being negotiated. 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 King's Indian Defence
- As White, strike at the fluid centre immediately with your own central pawn or piece pressure, before the opponent locks it into a shape that favours them.
Study plan & who it's for
Expect to invest a weekend or two into the main lines. In return you get a fighting system that scales all the way to master level for Black players.
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.