1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
The King's Indian Defense (KID) is the sharpest and most theoretically demanding answer to 1. d4. Black allows White to build a massive pawn centre, then sets about undermining it from the flanks. Unlike the Queen's Gambit Declined — which plays for solid equality — the King's Indian is a fighting defense. Black wants an unbalanced, attacking middlegame and is willing to take structural risks to get one.
It was a staple of Bobby Fischer's repertoire, one of Garry Kasparov's main weapons, and remains a go-to choice for Hikaru Nakamura, Teimour Radjabov, and a generation of modern attacking players.
The core idea
Black's setup is stereotyped on the first few moves:
... Nf6— develops the knight, prepares... g6... g6— prepares the fianchetto... Bg7— the king's bishop points at White's centre and queenside... d6— supports... e5and... c5, the two thematic breaks... O-O— short castling
After castling, Black chooses between two thematic pawn breaks:
... e5, leading to closed-centre positions and a kingside attack... c5, leading to Benoni-like structures with queenside play
The choice of which break to play is usually dictated by White's setup.
Main variations
Classical — 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5
The most principled main line. White completes development and Black plays ... e5 to challenge the centre. After 7. O-O Nc6 8. d5, White gains space but the pawn chain locks in. The central pawn chain (White's pawns on c4, d5, e4 against Black's pawns on c7, d6, e5) defines the entire middlegame:
- White plays for a queenside attack with
c5andb4-b5 - Black plays for a kingside attack with
... f5,... f4,... g5,... h5
The races can be astonishing. Kasparov famously won game after game playing Black in positions where White's queenside looked decisive — only for Black's kingside attack to land first.
Sämisch — 4. e4 d6 5. f3
White plays f3 to support e4 and prepare Be3, Qd2, O-O-O, and a queenside-castling pawn storm. The Sämisch is slow, positional, and structurally dangerous for Black. A favourite of classical positional players. Black's main counter is the Panno (... Nc6) or the classical ... e5 break.
Bayonet Attack — 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4
White throws the b-pawn forward to grab queenside space before Black can organize. The Bayonet has been one of White's most effective weapons against the KID and is a major reason some top players moved away from the opening in the 2010s.
Four Pawns Attack — 4. e4 d6 5. f4
White grabs four centre pawns (c4, d4, e4, f4) and tries to steamroll Black. Double-edged: if Black survives the opening, White's centre becomes a target. Rare at the top level but a real threat below.
Fianchetto Variation — 3. Nf3 g6 4. g3
White fianchettoes the king's bishop to neutralize Black's dark-squared bishop on the long diagonal. This is the positional, quiet way to meet the KID and has been used by Vladimir Kramnik, Magnus Carlsen, and many other top players. Black's attacking chances are reduced; the game becomes a strategic battle rather than a mutual race.
Averbakh — 4. e4 d6 5. Be2 O-O 6. Bg5
White pins Black's knight early. Specific move orders matter; Black's typical counter is ... c5 or ... Na6.
Mar del Plata — the classical race line
After 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5, both sides prepare their pawn storms. The resulting middlegames are some of the most-analyzed positions in opening theory.
The Benoni / KID overlap
If Black plays ... c5 instead of ... e5 after 4. e4 d6 5. Nf3 O-O 6. Be2 c5 7. O-O, play often transposes into Modern Benoni structures. The KID and the Benoni share so much territory that a KID player needs to be comfortable in Benoni positions as well.
Canonical games to study
- Bronstein – Najdorf, Zurich 1953 — early classical KID; showcases the
... f5attack. - Taimanov – Fischer, 1971 Candidates Match — Fischer playing the KID at his peak.
- Kasparov – Karpov, Tilburg 1991 — one of many classic Kasparov KID wins.
- Kasparov – Shirov, Horgen 1994 — Kasparov's crushing kingside attack from a Mar del Plata structure.
- Kramnik – Nakamura, Gibraltar 2017 — Fianchetto Variation; modern positional treatment.
- Nepomniachtchi – Radjabov, FIDE Grand Prix 2022 — modern elite KID play.
Why top players sometimes avoid the KID
The KID has always had a reputation for being difficult for Black. The theoretical risks are real:
- Queenside counterplay often arrives too late against strong White preparation.
- The Bayonet Attack (
9. b4) scored so heavily for White in the 2000s that Kasparov himself stopped using the KID in his final years as world champion. - Engine-era analysis has found White improvements in several key lines.
The KID is still very playable — Nakamura, Radjabov, and Caruana continue to score with it — but Black needs to know theory deeply and accept occasional structurally worse positions.
Practical advice
- Know your break.
... e5vs.... c5is the defining decision. Don't play both halfheartedly; pick the structure you understand and play it consistently. - Study the Mar del Plata attack. Even if you end up in other variations, the kingside-attack patterns (
... Nh5,... f4,... g5,... Ng6,... Rf6-h6) are the KID's core middlegame technique. - Know the piece regroupings. Kasparov's
... Nd7-f8-e6manoeuvre (aiming for the kingside attack) is the KID equivalent of the Ruy López's famous knight tour. Pattern recognition wins games here. - Accept structural weaknesses. Black's pawn structure in the KID is often ugly by classical standards (doubled pawns, holes on d5). The compensation is activity and attacking chances. If you can't tolerate slightly worse static positions, this isn't your opening.
- Pair the KID with a sharp answer to the English. Many
1. d4players will start with1. c4or1. Nf3to avoid KID theory. You need a matching system — typically the KID-English (1. c4 Nf6 2. Nc3 g6) or a Grünfeld setup.
Related openings
- Queen's Gambit — the classical
1. d4counterpart to the KID's hypermodernism. - Sicilian Defense — the
1. e4equivalent: Black's sharpest fighting reply to White's main move. - Ruy López — the "classical" side of the same coin. Understanding the KID and the Ruy together is a good intro to the classical/hypermodern debate.