1. Main line 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. e4 Bg4 Choose a line 1. Main line 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. e4 Bg4 Close 1. Main line 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. e4 Bg4 Next