Please be sure to hide information in spoilers, especially when mentioning something from later Episodes. ((Same goes for Higurashi, for whatever term is used in place of ‘Episodes’, if any.))
Forgive me if there’s a thread like this already.
From Umineko EP6:
I cried when Battler finally figured out a way to escape the closed room his corpse was supposedly sealed in. Erika had him trapped due to ‘resetting the chain lock when she entered the room’, and I was really worried Battler wouldn’t be able to get out of it, causing a logic error. Thankfully, Lamdadelta’s inspection was a-ok!