The following is suggested by my computer (Stockfish) as an improvement to a line in the Fried Liver played in Shirov v Sulskis 2014 and suggested as a definite refutation in some places - Shirov's key move was 9. a3.
As an improvement, instead of the Sulskis move 11... Kd6, play 11... Qh4 as follows, with suggested follow-up (I have tested at some depth, but the positions are not straightforward and there are alternative moves).
[FEN ""] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke6 8. Nc3 Ncb4 9. a3 Nc2+ 10. Kd1 Nxa1 11. Nxd5 Qh4 12. d3 Kd6 13. h3 Be6 14. Ne3 e4 15. Nf5+ Kc6 16. Nxh4 exf3 17. Bxe6 fxg2 18. Nxg2
With advantage to black. 11... Qh4 is an extraordinary move so I'd appreciate any commentary on that. Is it really advantage black? Can anyone find an improvement in this line (from move 11) for white?
My computer (at significant depth) would play 9 Bb3 as an improvement for white, instead of Shirov's move (I'm taking the position after move 8 as basic) - but this secures only a modest advantage for white and it looks as though the position can be defended. Is there any deep published analysis of these lines?