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ECO B40: Sicilian Defense

ECO B40 is part of volume B — Semi-Open Games. The Lichess chess-openings dataset files 18 named lines under it. The shortest is Sicilian Defense: French Variation: 1. e4 c5 2. Nf3 e6.

That position has come up in 39,538,513 Lichess games between players rated 1600 to 2500: White won 46.6%, 4.9% were drawn and Black won 48.5%.

OpeningMovesPlies
Sicilian Defense: French Variation 1. e4 c5 2. Nf3 e6 4
Sicilian Defense: Delayed Alapin Variation, with e6 1. e4 c5 2. Nf3 e6 3. c3 5
Sicilian Defense: French Variation, Westerinen Attack 1. e4 c5 2. Nf3 e6 3. b3 5
Sicilian Defense: Kramnik Variation 1. e4 c5 2. Nf3 e6 3. c4 5
Sicilian Defense: Wing Gambit Deferred 1. e4 c5 2. Nf3 e6 3. b4 5
Sicilian Defense: Drazic Variation 1. e4 c5 2. Nf3 e6 3. d4 a6 6
Sicilian Defense: French Variation, Open 1. e4 c5 2. Nf3 e6 3. d4 cxd4 6
Sicilian Defense: Marshall Counterattack 1. e4 c5 2. Nf3 e6 3. d4 d5 6
Sicilian Defense: Smith-Morra Gambit Deferred 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3 7
Sicilian Defense: French Variation, Normal 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 8
Sicilian Defense: Kveinis Variation 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 8
Sicilian Defense: Paulsen-Basman Defense 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 8
Sicilian Defense: Alapin Variation, Sherzer Variation 1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 Nc6 10
Sicilian Defense: Gaw-Paw Variation 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Qb6 10
Sicilian Defense: Pin Variation 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 10
Sicilian Defense: Kan Variation, Wing Attack, Fianchetto Variation 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 5. d4 cxd4 6. Nxd4 11
Sicilian Defense: Pin Variation, Koch Variation 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 11
Sicilian Defense: Pin Variation, Jaffe Variation 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 e5 12

https://chesscodex.org/eco/B40