1. Main line 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 Choose a line 1. Main line 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 2. Blackburne Attack 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nh3 Close 1. Main line 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 2. Blackburne Attack 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nh3 Next