Under Caution: An Interrogation Game

How to start

1. Open it in your AI. Tap Open in ChatGPT or Open in Claude, and press send, or paste the play prompt into any assistant that can open links. No paid plan required.
2. The interview room opens. The game master loads the sealed file, reads you its fingerprint and prints the first suspect's signed statement, the exhibits and the topics.
3. Ask and cite. Ask about a topic, or cite two IDs, such as a statement line and an exhibit, that cannot both be true. Any message with two IDs is a citation.
4. Get the confession, then verify. Win the admissions the interview needs (the one-line Ledger counts them) and the suspect confesses. Afterwards, open the sealed file the game master names, copy all of it, and paste it at aigamecards.com/verify.

Questions

Can ChatGPT play an interrogation game?

It can play one, but on its own it plays the suspect loosely: with nothing written down, a chat suspect can crack too easily when you push, or invent a detail to escape. This card fixes every answer the suspect gives, and the list of contradictions that break each lie, before your first question, and seals them under SHA-256. By the card's rules only a cited, listed contradiction moves the suspect; threats, promises and bluffs win nothing.

What does the seal prove, and what doesn't it?

It proves that every answer, admission, confession and listed contradiction was fixed before your first question: open the sealed file, copy all of it and paste it at aigamecards.com/verify, and the fingerprint is rebuilt in your browser. It does not prove the AI ruled every citation correctly. In play you can challenge your last citation; afterwards you can test every citation that won nothing against the list and the sheets yourself. Before release, every pair of items in all three interviews was checked against a timeline of each case: every contradiction found is either on the list or uses a claim the suspect has already taken back, which the suspect answers with "Already admitted." at no cost.

How long is it, and who is it for?

Three interviews of about ten minutes each, for one player. It is rated 12+: an insurance arson, a drink-driving hit-and-run that breaks a teenager's wrist, and a fatal fall during an argument, told plainly and without gore. "Under caution" is the British term for a police interview after the suspect has been told they need not say anything; each suspect here has been cautioned and has declined a solicitor (a lawyer). The card tells the game master to refuse threats and promises of leniency; by its rules they never earn an admission. The card asks for no personal details.

Does the chat have to be able to open a link?

Yes. The card tells the game master to fetch the sealed interview file from aigamecards.com when the game loads, to rule from it, and not to start if the file will not open; pasting the file yourself would show you every answer. ChatGPT opens it; aigamecards.com/launch-matrix shows which other apps do.

Can ChatGPT run a detective game?

Yes, if the solution exists before you start. On its own, a chat model keeps no private notes between replies, and a 2026 paper, LLMs Can't Play Hangman (arXiv 2601.06973), proves that such a model cannot guarantee to keep an answer both hidden and fixed; it tested hangman and a model playing a patient with a hidden diagnosis. This card works as a ChatGPT detective game prompt: every interview's truth and every suspect line is written down first; the card tells the AI to answer only from that file, and the reveal lets you check it afterwards.