Deadly mate · 7.O-O
1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nc6 4.Nxc6 dxc6 5.Nc3 Bc5 6.Bc4 Ng4 7.O-O Qh4 8.g3 Qxh2#
- e5: Answers with a central pawn of its own and opens lines for the queen and the f8 bishop.
- Nf6: Counterattacks e4 instead of defending e5.
- Nc6: Sacrifices the pawn to develop fast and set traps against the white king.