ECO D81: Grünfeld Defense

ECO D81 is part of volume D — Closed & Semi-Closed Games. The Lichess chess-openings dataset files one named line under it. It is Grünfeld Defense: Russian Variation, Accelerated Variation: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3.

That position has come up in 48,537 Lichess games between players rated 1600 to 2500: White won 48.4%, 6.2% were drawn and Black won 45.4%.