ECO D93: Grünfeld Defense

ECO D93 is part of volume D — Closed & Semi-Closed Games. The Lichess chess-openings dataset files one named line under it. It is Grünfeld Defense: Three Knights Variation, Hungarian Variation: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. e3.

That position has come up in 453,716 Lichess games between players rated 1600 to 2500: White won 46.6%, 6.3% were drawn and Black won 47.1%.