Wow, that is... that is the gaudiest checkered top hat I've ever seen.

Does anyone else think this might be a hint? It's not the same as H&C's "broad-brimmed black hat", but I find it interesting that it's mentioned at all. If we rule out all the suspects who have already been considered in 87, who are probably all red herrings, Flamel stands out as one of the few wizards clever enough to play such a game, along with Sirius Black.

Moody/Quirrel showdown/makeouts

Moody♠Quirrell ... no, just no.

(Harry seems to have been through quadrant vacillation between Hermione and Draco, though. Hermione starts flushed for Harry, who doesn't reciprocate, so she goes pale instead to prevent him from becoming a Dark Lord. Harry♦Hermione seems pretty stable, although Harry has some pale infidelity with Draco — who briefly waxes caliginous before attempting to auspiticize between Harry and Lucius. After Draco drops Hermione, she tries to set up Harry♥Draco, not knowing that Draco has more ashen aspirations ....)

Voldie isn't like any other Legilimens in recorded history. He doesn't need to look you in the eyes, and if your shields are that rusty he'd creep in so softly you'd never notice a thing.

Harry and Quirrell spend a lot of time together, and now we learn that he might not even have to look Harry in the eyes. How much of Harry's brain has Quirrell already mapped out? Perhaps this is why he is always playing "one level above you". Maybe this is why Harry doesn't notice some things he otherwise might.

I'm going to start reading all their conversations assuming that Quirrell can read all of Harry's thoughts in real time the same way we can, and interpret all his statements in light of that. Could be interesting.

Why is it just Luke doing the AMA? Eliezer already has an account for HPMOR, after all.

I found a plot hole, but I've filled it in on my own rather well. It still poses potential problems though, as my solution might conflict with later details that will be revealed to us.

In canon, Voldemort learned how to make a Horcrux from library books. HPMOR added the Interdict of Merlin, which means that this couldn't have happened. The Interdict of Merlin means that Voldemort could only have learned how to make a Horcrux from a living person. At first, I thought that this broke the story. But then I found a solution.

The solution is that Voldemort must have broken into Nurmengard sometime before making his first Horcrux, where he would have extracted the information from the mind of the imprisoned Gellert Grindelwald. I think that should be possible, and it would actually fit very well from a thematic point of view as well.

However, there's the possibility that it would conflict with whatever backstory Eliezer has in mind for Quirrel's identity as the supposed last scion of an ancient house. Also, it limits the paths this story can take, because through my solution would give Voldemort knowledge about many of Dumbledore and Grindelwald's secrets, such as the existence of the Deathly Hollows, and it also makes Voldemort even more OP'd.

This comment exists so that we don't end up with a major, unfixable plot hole later on in the story.

I figured out an exploit to make Horcrux users even more invincible.

A. If you make a Horcrux, you cannot be destroyed unless your Horcrux is destroyed.

B. People can be Horcruxes.

QED if one person turns another into a Horcrux and the other reciprocates then they have foolproof immortality.

This method also has three other benefits over the Dark Lord's attempt, that I can think of. First, it requires only two murders, not seven. Second, it causes twice as many people to become immortal. Third, you'll retain a much larger portion of your soul than you would otherwise, and avoid much of the consequent degeneration.

Quirrelmort is playing on the level below mine, clearly.

"The adult wizard" was changed quite a while before the most recent round of retcons. Most of the other changes I can understand, even the removal of Ghostbusters, but this one seems completely indefensible. He's listing species that are dangerous, so it makes more sense to use a biology-type word like "adult".

And as Quirrell is perfectly open later on in telling everyone that he believes Harry wishes to become a Dark Lord, and also that he still wishes to teach Harry how to defeat his foes, there's no reason for him to put on false airs and claim that all the students present will have Dark Wizards as their enemies. He even took "Defense Against Dark" out of the class's name for crying out loud!

I'm very much in favor of removing the Ghostbusters song from canon, and putting it in the Omakes.

The way cannon magic seems to work, love-potion based love probably doesn't count as Real Love for purposes of protection.

Edit: In fact the quote at the top of the Potter wiki article on love potions says:

Powerful infatuations can be induced by the skilful potioneer, but never yet has anyone managed to create the truly unbreakable, eternal, unconditional attachment that alone can be called Love.

I think Harry's Memories of Godric's Hollow are supposed to tell us that Quirrell knew better then to allow the sacrifice to take place, not that it just doesn't exist.

What makes you say that? I have a hard time seeing how that conclusion follows from the scene we saw.

I think we'd probably know if Eliezer had completely removed it, just as he explained his nerfing of Unbreakable vows.

He explained his outside-the-universe rationale for nerfing of Unbreakable Vows after the nerfing appeared explicitly in the story. But to my recollection, we have not seen much (if any) talk about the mechanism of Harry's surviving the Killing Curse. No one, not even Dumbledore, has said a single word about a Sacrificial Love Shield. If Eliezer ever explains the mechanism of Harry's survival, it will be when the explanation is no longer a significant spoiler for future chapters.