1. Main line 1. d4 Nc6 2. d5 Nb8 3. e4 Nf6 4. e5 Ng8 Choose a line 1. Main line 1. d4 Nc6 2. d5 Nb8 3. e4 Nf6 4. e5 Ng8 Close 1. Main line 1. d4 Nc6 2. d5 Nb8 3. e4 Nf6 4. e5 Ng8 Next