Sicilian Najdorf
Sicilian Najdorf
White’s first move.
Overview
The Najdorf Sicilian (ECO B90–B99) is the most analysed opening in chess history — and arguably the most prestigious. After 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3, the little move 5...a6 of the Polish-Argentine grandmaster Miguel Najdorf conceals a complete programme: deny b5 to the white pieces (no more Nb5 jumps towards d6), prepare ...e5 without fearing the Bb5+ pin, and begin the ...b5 expansion that will give Black a lifetime of queenside counterplay.
Its history is that of the attacking champions: Bobby Fischer made it his near-exclusive weapon against 1.e4, Garry Kasparov carried it to theoretical summits for twenty years, and it remains today the favourite battlefield of engines and world championship matches. To play the Najdorf is to accept entering the deepest theory there is — the Poisoned Pawn Variation (6.Bg5 e6 7.f4 Qb6) has been analysed beyond move thirty.
The key idea is total asymmetry: Black trades the c-pawn for the central d-pawn and plays a different game from the opponent — pressure on the half-open c-file, ...e5 or ...e6 pushes depending on White’s system, a king that castles late or not at all. White picks a war at move six: 6.Bg5 (the sharpest), 6.Be3 (the English Attack), 6.Be2 (the classical), 6.Bc4 (Fischer-Sozin).
It is an expert player’s opening: a born counter-attacker, a solid calculator, a lover of imbalance. Below 1800 ELO it can be played on general plans; above, it demands genuine theoretical work — and repays it a hundredfold.
The main line, move by move
Every move is explained: play through them in order to understand the opening’s logic.
- 1. e4White’s first move.
- 1… c5The Sicilian: an asymmetrical fight for the centre.
- 2. Nf3Development.
- 2… d6Supports ...e5 and frees the c8 bishop.
- 3. d4Opens the centre.
- 3… cxd4Central exchange.
- 4. Nxd4Recapture with the knight.
- 4… Nf6Attacks e4 and develops.
- 5. Nc3Defends e4 and develops.
- 5… a6The Najdorf move: prepares ...e5 and ...b5.
- 6. Be3English Attack: prepares f3, Qd2 and queenside castling.
- 6… e5Gains space and chases the d4 knight.
- 7. Nb3Knight retreat.
- 7… Be6Develops and watches over d5.
- 8. f3Supports e4 and prepares g4.
- 8… Be7Develops and prepares to castle.
- 9. Qd2Connects towards queenside castling.
- 9… O-OBlack castles.
- 10. O-O-OQueenside castling: opposite-side castling.
- 10… Nbd7Develops and prepares ...b5.
Plans for both sides
White’s plan
Against the Najdorf, White first chooses a philosophy. The English Attack (6.Be3, f3, Qd2, long castling) is the most systematic plan: lock e4, launch g4-g5 and h4 against the black king, and make the d5-square the strategic outlet for every piece. The race is then against the clock: every tempo wasted on the kingside is paid for on the queenside where Black pushes ...b5-b4. With 6.Bg5 and 7.f4 you enter total theoretical war: the f6-knight pinned, the e5 threat, Qf3/Qd2 batteries with long castling. This is the road for prepared players — improvising there is playing roulette. Conversely, 6.Be2 (the classical) and 6.g3 bet on strategy: contain ...e5 by exploiting the d5 hole, settle on the d-file, and turn the backward d6-pawn into a long-term target. Two constants run through every system: the d5-square — every exchange that brings pieces closer to it serves White — and watching for the ...d5 break, the liberation Black is permanently preparing. The best practical advice remains that of the specialists: pick ONE system against the Najdorf and know it deeply, rather than skimming four.
Black’s plan
Black’s plan begins with a profession of faith: 5...a6 is no waiting move, it is the key to the whole setup. It prepares ...e5 (fearing neither Nb5 nor Bb5+), winning the centre at the price of the d5 hole and the backward d6-pawn, or ...e6 in the systems where flexibility comes first. The vital counterplay comes from the queenside: ...b5, ...Bb7, ...Nbd7-b6 or -c5, and the half-open c-file where the c8-rook and the queen on c7 lean on c2 and c3. Against the opposite-castling pawn storms (English Attack, 6.Bg5), tempo is everything: Black does not defend, Black counter-attacks faster — ...b4 kicks the c3-knight that protects e4, and the whole white edifice comes apart. The thematic exchange sacrifice ...Rxc3! is part of the toolkit: destroying c3 often means destroying the entire white king’s cover. Two non-negotiable disciplines: cover the d5-square at all times (a white knight settling there for free equals a blunder), and prepare the ...d5 break as a long-term project — when it works, the Najdorf wins the centre AND the initiative in a single move. It is this combination of concrete solidity and latent violence that makes it the queen of Sicilians.
Main variations
Najdorf Variation
ECO B96White pins the f6 knight and aims for a direct attack with f4 and queenside castling.
Najdorf Variation, Opocensky Variation
ECO B92Quiet development of the bishop to e2 followed by short castling: a positional approach.
Najdorf Variation, Lipnitsky Attack
ECO B90Frequent line: the 6.Bc4 reply (~14% at peer level). Engine-verified continuation.
Najdorf Variation, Yates Variation
ECO B90Frequent line: the 6.Bd3 reply (~8% at peer level). Engine-verified continuation.
Sicilian Defense: Najdorf Variation, English Attack (6.f3)
ECO B90Frequent line: the 6.f3 reply (~8% at peer level). Engine-verified continuation.
Najdorf Variation
ECO B95Frequent line: 6.Bg5, the 7.Qd2 reply (~12% at peer level). Engine-verified continuation.
Sicilian Defense: Najdorf Variation, English Attack (7.Nf3)
ECO B90Frequent line: the 7.Nf3 reply (~19% at peer level). Engine-verified continuation.
Najdorf Variation
ECO B95Frequent line: 6.Bg5, the 7.Bd3 reply (~11% at peer level). Engine-verified continuation.
Traps to know
The Polugaevsky resource: 10.exf6?? Qe5+!
Move sequence : 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. exf6 Qe5+ 11. Be2 Qxg5
In the Polugaevsky Variation (7...b5!?), White appears to win a piece: 8.e5 chases the pinned f6-knight, 9.fxe5 keeps the pressure, and 10.exf6 finally captures it. It is a mirage: 10...Qe5+! forks the king and the g5-bishop. Blocking with 11.Be3 loses the bishop with check (11...Qxe3+ — nobody defends that square); after 11.Be2 Qxg5, Black has regained the piece a pawn up with the better structure. The entire Polugaevsky Variation rests on this hidden resource — the perfect example of Najdorf counter-poison: tactics in the service of defence.
The conjuring trick: 8.Bg5? Nxe4!
Move sequence : 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Bg5 Nxe4 9. Bxe7 Nxc3 10. Bxd8 Nxd1 11. Rxd1 Kxd8
In the classical variation, once ...Be7 is played, the belated pin 8.Bg5? falls into the best-known conjuring trick of the Sicilian: 8...Nxe4! The "pinned" knight flies away, because the e7-bishop interposes between g5 and the d8-queen. A chain of forced captures follows — 9.Bxe7 Nxc3 10.Bxd8 Nxd1 11.Rxd1 Kxd8 — at the end of which Black is simply a pawn up (the e4-pawn) with a pleasant endgame. Remember the criterion: the ...Nxe4 trick works precisely when a piece interposes on the pinner’s diagonal — never when the queen stands naked behind the knight.
The forbidden jump: 7.Nf5?? Bxf5 and the centre collapses
Move sequence : 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf5 Bxf5 8. exf5 d5
When 6...e5 pushes back the d4-knight, the f5-square shines like a dream outpost — it is an optical trap. 7.Nf5?? is refuted by the simplest of means: 7...Bxf5 8.exf5, and now 8...d5! overturns the position’s entire logic. The "backward" d6-pawn becomes a conquering e5-d5 central duo, the f5-pawn is a chronic weakness, and White’s bishop pair compensates for nothing. The knight had to retreat (7.Nb3 or 7.Nf3) and fight for d5 — the Najdorf’s REAL square — instead of shining for one move on f5.
Typical pawn structures
The ...e5 structure: d5 hole versus backward d6-pawn
The Najdorf’s central bargain in one picture: ...e5 has gained space and pushed the d4-knight away, at the price of the d5 hole and a backward d6-pawn on a half-open file. White plays against those two targets: install a knight on d5 (every minor-piece exchange brings that dream closer), lean on d6 down the d-file — here with the English Attack’s opposite castling, g4-g5 comes as a bonus. Black proves the opposite: ...Be6 and ...Nbd7 cover d5, the ...d5 break remains the supreme liberation, and ...b5-b4 launches the counter-offensive that turns d6 into a footnote in the storm.
Opposite castling: the g4 assault against the ...b5 wave
The war structure of 6.Bg5: a small black centre e6-d6, White castled long, and two pawn avalanches launched at each other. White pushes g4-g5 to evict the f6-knight and open lines towards h7-g7; f4-f5 strikes e6 at the critical moment. Black answers ...b5-b4: kicking the c3-knight undresses e4 and the c1-king’s diagonal — the ...Rxc3 sacrifice hovers permanently. In this race the rule is brutal: whoever plays one defensive move too many has lost. Count tempi, not pawns.
Results by rating level
Most-played lines (1600–1799 level)
- Central capture cxd4cxd495%48% wins (White)
- Anti-Qxd4 …Nf6Nf61%50% wins (White)
- Knight to c6Nc61%57% wins (White)
- Pin …Bg4Bg41%56% wins (White)
- Queenside fianchetto b6b60%59% wins (White)
- Central thrust …e6e60%55% wins (White)
The percentage shows the move’s popularity (share of games that play it). White’s score stays near 50% because all of these lines are sound — popularity is what sets them apart.
Reference games
Step through each game at your own pace with the arrows — it opens at the end of the opening.
Carlsen, M.. (2862) — Vachier Lagrave, M.. (2784)Draw · 2021
Undefeated World Champion Magnus Carlsen goes head-to-head with Maxime Vachier-Lagrave, the French grandmaster known as 'MVL' and widely regarded as one of the world’s foremost experts on the Sicilian Najdorf. MVL has long held the record as the highest-rated French player in history. When Carlsen opts for the Najdorf against its greatest living specialist, you know the battle will be exceptionally intense.
Analyse this game →Ding, Liren (2791) — Carlsen, Magnus (2863)White wins (resignation, time or agreement) · 2020
Ding Liren, the Chinese grandmaster who would go on to become World Champion in 2023, faces Magnus Carlsen in a Sicilian Najdorf. Ding is renowned for his encyclopedic opening preparation and exceptional defensive resilience. Against him, Carlsen deploys the Najdorf — an opening historically associated with the game’s greatest attackers — to probe the limits of China’s elite preparation.
Analyse this game →Nepomniachtchi, Ian (2784) — Carlsen, Magnus (2863)