Currently playing in a 4...Qh4 thematic tournament at chessworld.net. Eleven of the games reached the critical position after 9...Nf6.

mn wrote on 03/17/17 at 03:23:22:

After 10...Nxd4, he gives one line: 11 cxd4 Re8 12 Bf3 Qf5 13 c4 d6 14 Re1, with some comment about White being better without needing to memorize only-moves.

Here's a just finished game with 10 Nd4:

[Event "Chessworld.net"]

[Date "2017.??.??"]

[White "juliangon"]

[Black "tsmenace"]

[Result "1/2-1/2"]

[ECO "C45"]

[PlyCount "58"]

[EventDate "2017.??.??"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Be2 Qxe4 7. Ndb5 Bxc3+ 8. bxc3 Kd8 9. O-O Nf6 10. Nd4 Nxd4 11. cxd4 d6 12. Bg5 Qf5 13. Bh4 h6 14. Re1 g5 15. Bg3 Re8 16. c4 b6 17. Bf3 Rb8 18. Qb3 Bb7 19. d5 Nd7 20. Re3 Rxe3 21. Qxe3 Ne5 22. Re1 Bc8 23. Be4 Qf6 24. Qc3 Nd7 25. Qd2 Nc5 26. f3 Ba6 27. Bf2 Nxe4 28. Rxe4 Kc8 29. Qd1 Kb7 1/2-1/2

Confused_by_Theory wrote on 03/23/17 at 20:47:34:

Hey.

**1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nc3 Bb4 6.Be2 Qxe4 7.Nb5 Bxc3+ 8.bxc3 Kd8 9.0-0 Nf6 10.Re1 Re8 11.Bg5**

Looks absolutely prospectless for black imo and could well be the most practical line.

Have a nice day.

I was going to try that in one game, but my opponent replied to 10 Re1 with 10...h6!?. A few moves further on, I didn't seem to have much of an advantage. Possibly 11 Be3 at once is a better try.

[Event "Chessworld.net"]

[Date "2017.??.??"]

[White "tsmenace"]

[Black "AndyAndyO"]

[Result "1/2-1/2"]

[ECO "C45"]

[PlyCount "38"]

[EventDate "2017.??.??"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Be2 Qxe4 7. Ndb5 Bxc3+ 8. bxc3 Kd8 9. O-O Nf6 10. Re1 h6 11. Rb1 Re8 12. Be3 d6 13. c4 Bd7 14. Nc3 Qe5 15. Qd2 b6 16. Bf3 Qa5 17. Rb5 Qa3 18. Rb3 Qa5 19. Rb5 Qa3 1/2-1/2