1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.c3 dxc3 5.Nxc3 Nc6
6.Bc4 Nf6 7.e5 dxe5 8.Qxd8 Nxd8 (8...Kxd8)
9.Nb5 Rb8 10.Nxe5 e6 11.Nxc7+



FIG. 17

(7...Nxe5, 7...dxe5, 7...Ng4, 7...d5 )

After 9.Nb5 Rb8 comes 10 Nxe5 e6 11.Nxc7+(11.Nxa7) Ke7
12.Be3 Nc6 (Nd7, Kd6, b6 ) 13. O-O-O Nd7 14.Nxf7 Kxf7 15.Bxe6+ Kg6 16.Bxd7 Bxd7 17.Rxd7 Ne5 18.Rd5

FIG. 18

White is a pawn ahead.