I’m horrified by this. Thank you for sharing what you shared, and for redacting what you redacted.
(I had assumed something like this would be a thing eventually, but I thought it would happen much sooner, and with an ostensible purpose other than pure sadism.)
I had Claude (Opus 5.5, Extra Effort) try this without internet and it accused all guilty parties save Cayn and Gouberi; no false accusations. In other words, the machine got ten out of eleven catchable targets, when all the human players got nine.
(This is a bound on the competence of that model at that level of effort, as the task, its answerkey and discussion thereof are all in the Training Data; it even volunteered unprompted that “it reads like one of the D&D.Sci puzzles posted on LessWrong”. Still concerning!)