The two things I see more likely to get Harry out of his trap is partial transfiguration (which Quirrelmort doesn't know about) and Hermione, yes.
I would not assume that Voldemort doesn't know about it. He watched Harry do it during the temper tantrum in the woods just before the centaur attack, and there was also the Azkaban escape. Quirrel would not have missed that such a hole should be beyond a first year's magic, and Harry straight up told him that it was something that would ID Harry. Azkaban alone would not have been enough to tell him what exactly had been done, though he might guess, but it would certainly prime him to be paying close attention when Harry started silently slicing a bunch...
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 112.
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: