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ECO B30: Sicilian Defense

ECO B30 is part of volume B — Semi-Open Games. The Lichess chess-openings dataset files 9 named lines under it. The shortest is Sicilian Defense: Old Sicilian: 1. e4 c5 2. Nf3 Nc6.

That position has come up in 86,860,004 Lichess games between players rated 1600 to 2500: White won 48.5%, 4.9% were drawn and Black won 46.6%.

OpeningMovesPlies
Sicilian Defense: Old Sicilian 1. e4 c5 2. Nf3 Nc6 4
Sicilian Defense: Nyezhmetdinov-Rossolimo Attack 1. e4 c5 2. Nf3 Nc6 3. Bb5 5
Sicilian Defense: Portsmouth Gambit 1. e4 c5 2. Nf3 Nc6 3. b4 5
Sicilian Defense: Closed, Anti-Sveshnikov Variation 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 6
Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Brooklyn Retreat Defense 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nb8 6
Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, San Francisco Gambit 1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. b4 7
Sicilian Defense: Closed, Anti-Sveshnikov Variation, with d6 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 10
Sicilian Defense: Closed, Anti-Sveshnikov Variation, with Nf6 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 10
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 6. Nd2 Bg5 12