1. Main line 1. e4 Nc6 2. d4 d5 3. Nc3 dxe4 4. d5 Choose a line 1. Main line 1. e4 Nc6 2. d4 d5 3. Nc3 dxe4 4. d5 Close 1. Main line 1. e4 Nc6 2. d4 d5 3. Nc3 dxe4 4. d5 Next