Loads of stuff on Morphy here.
The links work.
Cannot find A Fried Liver v his brother Alonzo but have seen it the
castles mate game I gave in the blog as Paul v Alonzo.
I distrust DB's because people can add things and save them.
If I'm doing some serious research I always go for books, if I can,
trusting the author(s) have done some research.
I don't know where you heard about the Fried Livers. I cannot find them.
You have to be aware that some people call this...
The Fried Liver Attack. It's not. The Fried Liver Kicks in as the OP correctly
states with 6.Nxf7. (though he did get it wrong calling it a Three Knights Defence.
It's the Two Knights.)
is just one example on here where a completely
different opening is called the Fried Liver. There are numerous threads on
here with people not getting it right.
Appeared when Morphy played Boden but Boden played avoided the
Fried Liver by playing 5...Na5 instead of 5.....Nxd5. and Morphy played 6.d3
That move that is called The Morphy Variation of the Two Knights Defence.
My source for the castles mate game is 'Morphy Masterpieces'
by Reinfeld & Soltis who give it as Amateur.
Mind you that is an odd book. it says on the back cover Fred died in 1973,
he died in 1964.
I use to use that book to play a joke on the punters when I looked
after the Edinburgh Chess Club (1976-81) I was also librarian in charge
of over 1,000 chess books. Heaven.
"Don't trust everything you read in a book."
Was my opening punt. and show them the castle mate game which
is the last one in the book.
Reinfeld & Soltis discuss this possible postion after some analysis.
Black to play.
Saying it "..and it's still an open question."
So I would play out the game, go through the analysis and stop at;
"....and it's still an open question."
And show a whole host of mates for White. The prettiest being.