ECO D79: Neo-Grünfeld Defense

ECO D79 is part of volume D — Closed & Semi-Closed Games. The Lichess chess-openings dataset files one named line under it. It is Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation: 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 c6 6. O-O d5 7. cxd5 cxd5.

That position has come up in 266,699 Lichess games between players rated 1600 to 2500: White won 49.4%, 9.9% were drawn and Black won 40.8%.