ChessScreenshot

Sicilian Defense

1.e4 c5 2.Nf3 d6 3.d4 cxd4 · B20–B99

Starting positionWhite to move

0 / 16

Black trades a wing pawn for a centre pawn

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The idea

Black answers 1.e4 with the c-pawn, refusing to mirror and instead trading a wing pawn for a centre pawn — the most ambitious and most popular reply in chess.

Main line: 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O O-O

What White wants

  • Use the extra central space to build an attack on the kingside
  • Develop with Be2 or Be3, castle short and push f4 or g4
  • Exploit the d5 square and the half-open d-file

What Black wants

  • Trade the c-pawn for the d-pawn and use the c-file for counterplay
  • Expand on the queenside with ...a6, ...b5 and ...b4
  • Fight for d5 and pressure e4 — the base of White's position

Key idea

Understand this and the moves stop needing to be memorised.

Black trades a wing pawn for a centre pawn

After ...cxd4 and Nxd4 Black has given up the c-pawn but removed White's d-pawn, and the c-file is half open for a rook. Black is not trying to equalise passively — the Sicilian plays for a win with Black.

Common mistake

Using Bc4 without considering ...e6 and ...d5. The bishop still targets f7, but Black can gain time against it with central pawn moves; develop in a way that supports the centre rather than copy the Italian setup regardless of Black's replies.

Mistake example: Nf6.

Representative position

The position this opening is aiming at. Copy the FEN, or open it in the analysis board and let the engine tell you what it is worth.

rnbq1rk1/1p2bppp/p2p1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1RK1 w - - 4 9

Analyze this position

Variations

17 lines branching from here.

Related openings

Sicilian Defense: Najdorf Variation1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 · B90–B99The most analysed opening in chess: 5...a6 takes the b5 square away from White's pieces and prepares ...e5 and ...b5 in one move.Sicilian Defense: Dragon Variation1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 · B70–B79Black fianchettoes the bishop onto the long diagonal, where it rakes White's queenside — the most direct and most tactical Sicilian.Sicilian Defense: Sveshnikov Variation1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 · B33Black advances ...e5, gaining central space while leaving a hole on d5 and a potentially backward d6 pawn. Active pieces, queenside expansion and ...f5 provide counterplay against those structural concessions.Sicilian Defense: Taimanov Variation1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 · B47–B49Black develops both knights and the queen to natural squares before committing the pawn structure — flexible, sound, and very hard to attack.Sicilian Defense: Scheveningen Variation1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 · B80–B89A flexible, small-centre setup: Black builds a compact pawn wall with ...d6 and ...e6 and chooses the counterattack after seeing where White commits.Sicilian Defense: Alapin Variation1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nf6 · B22White avoids all the main-line theory with 2.c3, offering a pawn centre in exchange for the open Sicilian's complexities.