1. Main line 1. c4 c5 2. Nc3 Nf6 3. Nf3 e5 Choose a line 1. Main line 1. c4 c5 2. Nc3 Nf6 3. Nf3 e5 2. Four Knights Variation 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 3. Two Knights Variation 1. c4 c5 2. Nc3 Nc6 Close 1. Main line 1. c4 c5 2. Nc3 Nf6 3. Nf3 e5 2. Four Knights Variation 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 3. Two Knights Variation 1. c4 c5 2. Nc3 Nc6 Next