This suggests that the troll was known to Hogwarts as "The Defense Professor", and so explains what the wards reported:
"... The wards of Hogwarts record that no foreign creature has entered, and that it was the Defense Professor who killed Hermione Granger."
Ok. In that case, Quirrell can be hiding on his person or in some magical 'all-holding invisible pocket' an army of trolls, or anything he thinks would be better suited for attack (transfigured wizards?), and Dumbledore is ultimately doomed.
New chapter!
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 102.
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: