ECO B46: Sicilian Defense

ECO B46 is part of volume B — Semi-Open Games. The Lichess chess-openings dataset files one named line under it. It is Sicilian Defense: Taimanov Variation: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6.

That position has come up in 2,397,822 Lichess games between players rated 1600 to 2500: White won 48.0%, 4.6% were drawn and Black won 47.4%.