Sicilian Defense: Najdorf Variation, Amsterdam Variation

Before the first move

The Najdorf Variation is one of the most respected and complex replies to the Open Sicilian. In the Amsterdam Variation, White plays 6.f4 to launch an early kingside expansion. You'll enter a sharp battle where White seeks a quick attack while Black aims to exploit central control and long-term counterplay on the queenside.

1. e4White

White opens with e4, the most popular move in chess. By controlling d5 and f5, White prepares for rapid development. As Black, you have many responses, but the Sicilian Defense is the most ambitious way to fight for a win by creating immediate asymmetry.

1... c5Black · your move

Advance your pawn to c5. This move defines the Sicilian Defense. Instead of mirroring White, you fight for the d4-square from the flank. It sets the stage for an unbalanced game where you often trade a side pawn for White's central d-pawn.

Other paths here: f6 (Barnes Defense) · g5 (Borg Defense) · h6 (Carr Defense) · f5 (Duras Gambit)

2. Nf3White

White plays Nf3, the main line of the Sicilian. This move prepares the 'Open Sicilian' by supporting d4. White could try the Bowdler Attack with Bc4 or the Alapin with c3, but the knight move is the most testing path for Black's setup.

Other paths here: Qg4 (Sicilian Defense: Amazon Attack) · Bc4 (Sicilian Defense: Bowdler Attack) · Nh3 (Sicilian Defense: Brick Variation) · g4 (Sicilian Defense: Grob Variation)

2... d6Black · your move

Move your pawn to d6. This solidifies your control over the e5-square and prepares to develop your light-squared bishop. It is a foundational move for the Najdorf and Dragon variations, ensuring White cannot easily push e4-e5 to harass your future knight on f6.

Other paths here: f5 (Sicilian Defense: Brussels Gambit) · h6 (Sicilian Defense: Bücker Variation) · g6 (Sicilian Defense: Hyperaccelerated Dragon) · e5 (Sicilian Defense: Jalalabad Variation)

3. d4White

White plays d4, initiating the Open Sicilian. This leads to high-tension games where White gets rapid development in exchange for Black's long-term pawn structure advantages. White sometimes delays this with c3 or Bb5+, but the immediate d4 is the most aggressive approach.

Other paths here: c3 (Sicilian Defense: Delayed Alapin Variation, with d6) · Bd3 (Sicilian Defense: Kopec System) · b4 (Sicilian Defense: Wing Gambit, Deferred Variation) · b3 (Sicilian: 2.Nf3 d6 3.b3)

3... cxd4Black · your move

Capture the pawn on d4. This trade is essential to the Sicilian strategy. You remove White's central pawn, opening the c-file for your rook and ensuring that you will have an extra central pawn for the endgame, which provides excellent long-term winning chances.

Other paths here: Nf6 (Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order) · Nd7 (Lazy Knight Variation, Sicilian)

4. Nxd4White

White recaptures with Nxd4, centralizing the knight. While White could occasionally recapture with the queen—the Chekhover Variation—taking with the knight is the standard way to maintain pressure and keep the queen safe from being harassed by Black's minor pieces.

Other paths here: c3 (Sicilian Defense: Modern Variations, Tartakower) · Qxd4 (Sicilian Defense: Chekhover Variation)

4... Nf6Black · your move

Develop your knight to f6. This move attacks the e4-pawn and forces White to defend it, usually with Nc3. It also prepares you for kingside castling and is a standard developing move in nearly every variation of the Open Sicilian.

Other paths here: g6 (Sicilian Defense: Dragon Variation, Accelerated Dragon) · a6 (Sicilian: Open, 2...d6, 4...a6) · e5 (Sicilian: Open, 2...d6, 4...e5)

5. Nc3White

White plays Nc3, the most natural way to defend e4 and continue development. Alternatives like f3 or Bd3 are slower and allow Black more freedom. By placing the knight on c3, White keeps the tension high and prepares for the main-line battles ahead.

Other paths here: Bc4 (Sicilian Defense: Modern Variations, Ginsberg Gambit) · f3 (Sicilian Defense: Prins Variation) · Bd3 (Sicilian: Open, 2...d6, 4...Nf6 5.Bd3)

5... a6Black · your move

Move your pawn to a6. This is the defining move of the Najdorf Variation. It prevents White's knights or bishop from landing on b5 and prepares for a future b5 expansion of your own. It is a quiet but incredibly deep prophylactic move.

Other paths here: Nc6 (Sicilian Defense: Classical Variation) · Bd7 (Sicilian Defense: Kupreichik Variation) · e5 (Sicilian: Open, 2...d6, 5.Nc3 e5) · Nbd7 (Sicilian: Open, 2...d6, 5.Nc3 Nbd7)

6. f4White

White chooses 6.f4, the Amsterdam Variation. This is an aggressive alternative to the more common English Attack with Be3 or the Lipnitsky with Bc4. White wants to strike quickly, often following up with e5 or Qf3 to put maximum pressure on your kingside.

Other paths here: h3 (Sicilian Defense: Najdorf Variation, Adams Attack) · g4 (Sicilian Defense: Najdorf Variation, Dekker Gambit) · Be3 (Sicilian Defense: Najdorf Variation, English Attack) · Rg1 (Sicilian Defense: Najdorf Variation, Freak Attack)

Where you stand

The Amsterdam Variation leads to sharp, tactical struggles. White will look to expand with e5 or launch a kingside storm, while Black typically responds with e5 or e6 to stabilize the center before counterattacking on the queenside. Both sides must balance their aggressive intentions with careful prophylaxis to avoid a sudden collapse.

• f4-e5 White aims to shatter the center with e5
• d1-f3 The queen supports the f4-e5 advance
• e7-e5 Black challenges the center and the d4 knight
• b8-d7 The knight develops to support the e5 break
• b7-b5 Black expands on the queenside to create counterplay