1. Main line 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Choose a line 1. Main line 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 2. Zaitsev Defense 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Qd7 Close 1. Main line 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 2. Zaitsev Defense 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Qd7 Next