1. Main line 1. e3 e5 2. c4 d6 3. Nc3 Nc6 4. b3 Nf6 Choose a line 1. Main line 1. e3 e5 2. c4 d6 3. Nc3 Nc6 4. b3 Nf6 Close 1. Main line 1. e3 e5 2. c4 d6 3. Nc3 Nc6 4. b3 Nf6 Next