1. Main line 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Nf6 Choose a line 1. Main line 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Nf6 Close 1. Main line 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Nf6 Next