King's Indian Defence
The King's Indian is chess's great romance: Black invites White to build the biggest centre in the opening, then burns it down with ...e5, ...f5 and a full-scale pawn storm. Fischer's devastations, Kasparov's Mar del Plata brilliancies and Radjabov's modern revivals all flow from the same fearless idea.
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 10…f5 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 10... f5 — 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
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
2 knights & 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 — 20 plies, white to move.
Strategic ideas
Ideas for White
Choose your battlefield: close with d5 and race on the queenside, or squeeze with the Ne1-Nd3 regrouping and the extra space.
Ideas for Black
Break with ...e5 or ...c5 at the perfect moment, storm the kingside with ...f5-f4 and ...g5, and trust the g7-bishop to punish overextension.
Main variations (22)
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.
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.
- 2Trade correctly: before every exchange ask which piece benefits from the resulting square colours and pawn structure.
- 3Develop with a purpose: connect the pieces to a concrete plan (a break, a target square, an outpost) instead of making automatic moves.
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
The ...Ng4 tricks: after careless h3, ...Ng4 hits f2 and h2 with tactical fireworks
Bayonet Attack pitfalls: grabbing queenside pawns early lets Black's pieces flood the long diagonal
How to Play Against the King's 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.
Masters & history
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.