Sicilian Defence

ECO B20–B99 · Level: Intermediate · Also known as: Sicilian, 1.e4 c5

The Sicilian Defence (1.e4 c5) contests the centre from the flank with the c-pawn, creating unbalanced positions with real winning chances. It is the most popular reply to 1.e4.

Position at the end of the main line

Main line

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3

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History

First analysed by Polerio in the 16th century, it became a world-championship weapon in the hands of Fischer and Kasparov. It is the most frequent answer to 1.e4 in master games.

White's plan

  • In the Open Sicilian (2.Nf3 and 3.d4) White seeks a lead in development and a kingside attack.
  • A common plan: Be3, Qd2, long castling and a g4-g5 pawn storm.
  • Anti-Sicilians such as the Alapin (2.c3) or Closed Sicilian (2.Nc3) avoid heavy theory.

Black's plan

  • After trading the c-pawn for White's d-pawn, Black has an extra central pawn (d and e).
  • The half-open c-file supports queenside counterplay with rook and queen.
  • A well-timed ...d5 break is the key idea to open the centre and seize the initiative.

Key variations

Sveshnikov

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6

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Who should play it?

For Black players who play to win and enjoy unbalanced, tactical positions. The theory is vast, so start with one variation.

Frequently asked questions

Is the Sicilian good for beginners?

Its ideas are instructive but the theory is huge. Flexible lines like the Taimanov or Kan are good starting points.

What should White play against the Sicilian?

The most ambitious is the Open Sicilian (2.Nf3 and 3.d4). Those wanting less theory choose the Alapin 2.c3.

Why is it so popular?

It breaks symmetry and gives Black real winning chances, not just equality.

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Related openings

  • Sicilian Najdorf — The Najdorf is the most famous and deepest Sicilian line.
  • Sicilian Dragon — In the Dragon, Black fianchettoes the bishop on g7, where it breathes fire down the long diagonal at White's queenside.
  • Smith-Morra Gambit — The Smith-Morra Gambit sacrifices a pawn against the Sicilian for rapid development and open lines.
  • French Defence — The French Defence (1.e4 e6) builds a solid pawn chain and strikes at the centre later.

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