1. Main line 1. d4 Nf6 2. c4 c5 3. d5 Ne4 Choose a line 1. Main line 1. d4 Nf6 2. c4 c5 3. d5 Ne4 Close 1. Main line 1. d4 Nf6 2. c4 c5 3. d5 Ne4 Next