Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. Nc3/3...dxe4

= Caro-Kann Defence:Classical Variation = 3...dxe4 is black's only good move. Other moves are not in the spirit of this opening. This move also denies white his e4/d4 pawn center. White almost invariably responds with 4. Nxe4, but a few gambit continuations do exist.