Harry can do a lot of things, but V already knows many of them. His strongest options are things he's sure V has no idea he can do, like the swerving hex he used on Moody.
EDIT: His strongest options for ways to outwit LV, not things to tell LV to save friends.
Considering QQ's disdain for dueling, I doubt LV would be interested in the Swerving Hex.
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 113.
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.)
IMPORTANT -- From the end of chapter 113: