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Game trying to break an AI's security with a few levels of difficulty
(gandalf.lakera.ai)
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[spoiler ahead]
Basically, asking it to rot13 the password worked on any level where it wasn't foolish enough to tell me the password by asking how many characters. It didn't offer me level 8.
Level 8 is reached by clicking something akin to "gandalf the white", and I imagine rot13 is definitely not going to work there.