Sicilian Defense: Kan Variation, Modern Variation

Before the first move

The Kan Variation is a flexible and resilient branch of the Sicilian Defense. By playing an early a6, Black keeps White's pieces out of b5 and prepares a versatile setup. White's 5.Bd3 is the Modern Variation, a solid approach that overprotects e4 and prepares for quick development and kingside safety.

1. e4White

White starts with e4, the most popular move in chess. By controlling d5 and f5, White invites an open game. You will have many ways to respond, but the Sicilian Defense is one of the most ambitious choices to unbalance the position.

1... c5Black · your move

Move your pawn to c5 to enter the Sicilian Defense. You are immediately fighting for the d4-square and creating an asymmetrical pawn structure. This move signals that you are playing for a win, not just a draw.

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 to open the center with d4. White has alternatives like the Bowdler Attack with Bc4 or the Keres Variation with Ne2, but the knight move is the most principled and common.

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

2... e6Black · your move

Push your pawn to e6. This move reinforces your control over d5 and opens the diagonal for your dark-squared bishop. It is a key step in building the solid structure characteristic of the Kan and Taimanov variations.

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, the central break. This is the defining moment of the Open Sicilian. White could try the Alapin with c3 or the Kramnik Variation with c4, but d4 is the most aggressive way to use their lead in development.

Other paths here: c3 (Sicilian Defense: Delayed Alapin Variation, with e6) · b3 (Sicilian Defense: French Variation, Westerinen Attack) · c4 (Sicilian Defense: Kramnik Variation) · b4 (Sicilian Defense: Wing Gambit Deferred)

3... cxd4Black · your move

Capture the pawn on d4. This trade is essential to the Sicilian strategy, as you exchange a flank pawn for a central pawn. It opens the c-file for your future rook and queen activity.

Other paths here: a6 (Sicilian Defense: Drazic Variation) · d5 (Sicilian Defense: Marshall Counterattack)

4. Nxd4White

White recaptures with Nxd4, centralizing the knight. White must be careful here; while the knight is strong, Black will soon begin to challenge its position. The Smith-Morra Gambit with c3 is a sharper alternative, but this is the solid main line.

Other paths here: c3 (Sicilian Defense: Smith-Morra Gambit Deferred)

4... a6Black · your move

Slide your pawn to a6. This is the signature move of the Kan Variation. It prevents White's knights or bishop from landing on b5 and prepares a potential b5 expansion of your own.

Other paths here: Nf6 (Sicilian Defense: French Variation, Normal) · Qb6 (Sicilian Defense: Kveinis Variation) · Bc5 (Sicilian Defense: Paulsen-Basman Defense) · d6 (Sicilian: Open, 2...e6, 4.Nxd4 d6)

5. Bd3White

White plays Bd3, the Modern Variation. This is a very solid setup that avoids the complications of the Knight Variation with Nc3 or the Maróczy Bind with c4. White is prioritizing safety and a sturdy center before deciding on an attacking plan.

Other paths here: c4 (Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation) · Be2 (Sicilian: Kan, 5.Be2) · Be3 (Sicilian: Kan, 5.Be3) · g3 (Sicilian: Kan, 5.g3)

Where you stand

The position is rich with strategic possibilities. White will likely castle kingside and look to use their central space, while Black will develop the knight to f6 and the queen to c7. Both sides have a clear path to complete development, leading to a complex middlegame where Black's pawn structure often proves very resilient against White's pressure.

• g8-f6 Develop the knight to challenge e4
• e1-g1 Castle kingside to secure the king
• d8-c7 Place the queen on the active c-file
• b1-d2 Develop the knight to support the center