ECO family guide

Sicilian Defense — all variations and ECO codes

391 named lines across 80 ECO codes (B20–B99). Source: the CC0-licensed lichess.org opening database.

The main line

Position after 1.e4 c5 (B20). Open this line on Lichess → · Sicilian Defense on Lichess

How the main line scores at your rating

Real Lichess win rates for 1.e4 c5, playing as black — the family's other variations are not separately tracked for win rate yet, main line only.

Scroll to see more →

Win/draw/loss rate by rating band
Rating bandGamesWhite / draw / BlackScore for black
1400-1600 89,819,085 47.3% / 3.6% / 49.0% 50.8%
1600-1800 124,922,537 47.6% / 4.0% / 48.4% 50.4%
1800-2000 127,185,293 47.9% / 4.6% / 47.5% 49.8%
2000+ 109,729,703 48.0% / 5.9% / 46.1% 49.1%

All 391 named variations

Every named line in the Sicilian Defense family, from the CC0-licensed ECO classification — not separately tracked for win rate, but every ECO code and move sequence is real, sourced data.

Browse more

ECO Volume B: Semi-Open Games (other than the French Defense) → · All ECO families → · Search and play every line in the interactive explorer →

Related

Sicilian Defense (full deep-dive)

Real replies, common mistakes, and master games for one curated line.

Alekhine Defense

56 named lines, ECO B02

Caro-Kann Defense

110 named lines, ECO B10

King's Pawn Game

38 named lines, ECO B00