ECO B26: Sicilian Defense

ECO B26 is part of volume B — Semi-Open Games. The Lichess chess-openings dataset files one named line under it. It is Sicilian Defense: Closed: 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3.

That position has come up in 287,306 Lichess games between players rated 1600 to 2500: White won 50.8%, 6.0% were drawn and Black won 43.2%.