Knight Crusher: Vienna Gambit line

Engine-verified opening line.

1. e4
2. e5
3. Nc3
4. Nf6
5. f4
6. Nc6
7. fxe5
8. Nxe5
9. d4
10. Neg4
11. e5
12. Qe7
13. Qe2
14. d6
15. exf6
16. Qxe2+
17. Bxe2
18. Nxf6
19. Bd3