Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. Nd2/3...dxe4

= Caro-Kann Defense: Modern Variation = 4. Nxe4 transposes into the main line Caro-Kann Defense.

Theory table
1.e4 c6 2.d4 d5 3.Nd2 dxe4