ECO B16: Caro-Kann Defense

ECO B16 is part of volume B — Semi-Open Games. The Lichess chess-openings dataset files 2 named lines under it. The shortest is Caro-Kann Defense: Finnish Variation: 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 h6.

That position has come up in 45,780 Lichess games between players rated 1600 to 2500: White won 51.3%, 6.1% were drawn and Black won 42.6%.