1. Main line 1. d4 Nf6 2. c4 e5 Choose a line 1. Main line 1. d4 Nf6 2. c4 e5 2. Accepted 1. d4 Nf6 2. c4 e5 3. dxe5 3. Accepted, Fajarowicz Defense 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Accepted, Fajarowicz Defense, Bonsdorf Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 5. Accepted, Fajarowicz Defense, Steiner Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Qc2 Close 1. Main line 1. d4 Nf6 2. c4 e5 2. Accepted 1. d4 Nf6 2. c4 e5 3. dxe5 3. Accepted, Fajarowicz Defense 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Accepted, Fajarowicz Defense, Bonsdorf Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 5. Accepted, Fajarowicz Defense, Steiner Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Qc2 Next