3.Bc4 … 6...Nc5 7.Nxe5 Nd4 8.Qe3: Petrov Defense line

Petrov Defense line, 10 moves deep. You play Black.

1. e4
2. e5
3. Nf3
4. Nf6
5. Bc4
6. Nxe4
7. Qe2
8. d5
9. Bb3
10. Nc6
11. d3
12. Nc5
13. Nxe5
14. Nd4
15. Qe3
16. Ncxb3
17. Nc6+
18. Be7
19. Nxd8
20. Nxc2+