ECO A94: Dutch Defense

ECO A94 is part of volume A — Flank Openings. The Lichess chess-openings dataset files one named line under it. It is Dutch Defense: Stonewall Variation: 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 7. b3 c6 8. Ba3.

That position has come up in 23,562 Lichess games between players rated 1600 to 2500: White won 54.4%, 8.8% were drawn and Black won 36.8%.