Chess Opening Theory/1. d4/1...d5/2. c4/2...dxc4/3.Nc3
Two players have labeled this move misguided, as the knight is vulnerable here to a b7-b5-b4 advance. It also doesn't control d4 or e5, two important squares. Black does best to prepare b5 with 3...c6. It is easier for him to equalize after c6. This usually leads to a firefight on the queenside.