I've been using Fritz's infinite analysis for guidance on the variations, but not analysis running for the whole day.  However, I, too, am sceptical of many of Fritz's evaluations- I think it places too much emphasis on the black king being stuck in the centre in the Fried Liver.  For instance, Fritz's assessment of the position at the end of your 14.0-0 Nf6 line, "=", is laughable, as even I can't see any compensation for White there.

It's more a case of me looking at the resulting positions and considering specifically what White has in return for the material deficit, and in some of the positions I quite like White's compensation.  That doesn't mean your assessments are wrong of course- sometimes compensation can seem good optically, and even offer good chances OTB, but objectively fail to provide anything concrete against good defence.

Btw my questions on 6.Nxf7 were more out of interest than any attempt to revive a pet line (I found some of the "-/+" and "-+" assessments in the 9.Qe4 and 9.0-0 lines hard to believe).  I had basically given it up a decade ago for reasons that others have given:
Quote:

Markovich wrote on 03/25/10 at 12:26:45:


I'd be interested to know what Dan Heisman's verdict on those lines is as he has done a lot of analysis on them according to the following thread: http://www.chesspub.com/cgi-bin/yabb2/YaBB.pl?num=1155593698 ;
A couple of the later posts imply that he wasn't as pessimistic about White's prospects.

I don't own the book, but I recall that the notion of 6.d4 being crushing for White was put into question as early as 1995 in "The Big Book of Busts", offering 6...Bb4+, but I hadn't come across 6...Be6 before getting some back issues of Kaissiber.  7.dxe5 as above is probably best.  Dan Heisman prefers 6...Nxd4, as discussed in the aforementioned thread, the point being that 7.c3 does not win a piece as some sources erroneously state.

kylemeister wrote on 03/22/10 at 17:59:15:


8...Nxe5 is "ancient theory", given as slight advantage for White in Bilguer/Handbuch des Schachspiels 1916. So you are a bit behind...

ChevyBanginStyle wrote on 03/25/10 at 12:07:40:


"A solid positional advantage without a risk" may be true for 8...Nxe5?, less so for De Zeeuw's 8...Bc5, a sharp gambit which is highly dangerous in otb play. Unfortunately, Maurits Wind found a good reply for White, which is +/-. 

But there are two better moves: my 8...Qh4!? and Maurits Wind's 8...Bb4+ 9. c3 Bc5. The latter refutes the claim so popular in this thread (but not based on any reliable sources), that 7.Nxe6 gives White an advantage.

Stefan Buecker wrote on 03/24/10 at 23:27:34:


Ah, I admit I am not too familiar with developments in these lines, since I don't play them with either side. I was previously under the impression that 6.d4! was almost a refutation while 6.Nxf7!? (now really "?" I suppose!) led to very unclear play with good chances for White.

If I were White, I would definitely play for a stable advantage with 6.d4 rather than seek complications through 6.Nxf7. After 6.d4 Be6, the continuation 7.Nxe6 fxe6 8.dxe5 from kylemeister looks simply better for White. He seems to have a solid positional advantage without a lot of risk. If this is the case, the question of the Fried Liver seems a bit academic (although interesting in its own right).

Here are the questions I have on 9.Qe4 and 9.0-0 after a more "concrete" look:

A) 9.0-0 c6 10.d4 Qf6 is given as "-+", but how does Black prove this against 11.Qe2, with ideas of f4, dxe5 and Ne4?   11...Bd6 doesn't work after 12.f4.  Fritz 10 suggests moving the king away, via 11...Kd7, when White has 12.dxe5 Qg6 13.a3 Nxc3 14.bxc3 Nd5 15.Bd3, or perhaps 12.Ne4.   11...Ke7 and 11...Qg6 are well met by 12.f4, exploiting the position of the king on the e-file.

B) 9.Qe4 c6 10.a3 Na6 11.d4 

B1) 12.f4 Kf7 13.fxe5 Be6 14.0-0+ Kg8 with the assessment "-/+", but White has two pawns for the piece, a strong centre, a passed e-pawn and control of the f-file, plus Black will have a hard time getting the rook into play, e.g. 15.Bd2 Nxc3 16.Bxe6+ Nxe6 17.Bxc3 and one plan is to double/triple up on the f-file.  Or 14...Ke8 15.Qd3, with the idea 16.Ne4 (15...Nxc3 16.bxc3 Qd7 17.Bxe6 Qxe6, or 16.Qxc3 Nd5 17.Qb3 and White seems to have compensation).

B2) 12.Bf4. Kf7 13.Bxe5 Be6 14.Qf3+ (instead of 14.0-0 Nf6! when White has nothing for the material deficit) 14...Nf6 15.Bxe6+ Nxe6 16.0-0-0 Kg8 17.Rhe1 Ng5 18.Qg3 and I see a fair amount of compensation.

SWJediknight wrote on 03/24/10 at 20:01:34:


What's scary though is that he could be right! This looks like it demands a bit more than a quick glance.

Markovich wrote on 03/24/10 at 18:43:31:


Briefly looking at the pgn, it appears that it should called "How to Refute 5...Nxd5! 6.Nxf7?" where Master Om claims that Black has a clear advantage at the end of analysis (-/+). I am guessing that he considers 6.d4 equal with best play, since that line is not included although 6.Qf3 and 6.Qh5 are mentioned.