Sicilian Defense
ECO B20-B99intermediate
The Sicilian Defense, 1.e4 c5, is statistically Black's most successful answer to 1.e4 and the most played opening in chess. Instead of meeting White symmetrically, Black trades a wing pawn for a center pawn after the typical d4 cxd4, gaining an unbalanced game with genuine winning chances. The price is sharpness: White gets quick development and attacking prospects, so both sides need to know their systems — from the Najdorf and Dragon to White's anti-Sicilian weapons like the Alapin and Rossolimo.
Main line
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6
Diagram shows the position after 6 half-moves of the main line. On SpeakChess you can drill this line move by move — the trainer plays the other side and corrects you instantly, then spaced repetition schedules each variation so you review it right before you would forget it.
Win rates by rating
Results from real online games, measured after the line shown in each row. Most opening sites show one aggregate number — how an opening scores depends heavily on who is playing it.
| Rating | Games | White wins | Draws | Black wins | Position after |
|---|---|---|---|---|---|
| 400-600 | 140 | 50% | 2.9% | 47.1% | 1.e4 c5 2.Nf3 Nc6 |
| 600-800 | 185 | 52.4% | 2.7% | 44.9% | 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 |
| 800-1000 | 76 | 42.1% | 0% | 57.9% | 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 |
| 1000-1200 | 40 | 42.5% | 0% | 57.5% | 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 |
| 1200-1400 | 152 | 50.7% | 2% | 47.4% | 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 |
Most played continuations (600-800 rating)
After 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4:
- Nxd4 — played 32.4% of the time (White wins 45%, draws 3.3%, Black wins 51.7%)
- e5 — played 23.8% of the time (White wins 45.5%, draws 2.3%, Black wins 52.3%)
- g6 — played 20% of the time (White wins 59.5%, draws 2.7%, Black wins 37.8%)
Related openings
Frequently asked questions
Why is the Sicilian Defense so popular?
It fights for a win from move one. The asymmetrical pawn structure (Black's d- and e-pawns vs White's e- and f-pawns) means the game rarely fizzles into a dull equality, which is why ambitious players at every level — and nearly all professionals — keep it in their repertoire.
Is the Sicilian too sharp for beginners?
The main lines reward concrete preparation, so a complete beginner is usually better served by 1...e5 first. That said, structure-based Sicilians like the Taimanov or Kan are playable on understanding alone, and learning the Sicilian early teaches tactical alertness fast.
What is the Open Sicilian?
After 1.e4 c5 2.Nf3 followed by 3.d4 cxd4 4.Nxd4, White opens the center and develops rapidly — this is the Open Sicilian, the critical test of Black's setup. Black then chooses a system by move order: ...d6 and ...a6 for the Najdorf, ...g6 for the Dragon, ...e6 for the Taimanov/Scheveningen complex.
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