The Kalashnikov Variation

1. e4 c5. 2. Nf3 Nc6. 3. d4 cd. 4. Nxd4 e5.

The main line is A. 5. Nb5 but the following alternatives are occasionally tried;

B. 5. Nxc6  C. 5. Nb3  D. 5. Nf3 E. 5. Nf5