AI Game Cards

Logic puzzles for ChatGPT & Claude

Updated

Logic puzzles with exactly one answer, set before you start: a logic grid and a pay-for-evidence ordering puzzle. Free, no signup. Each game is a ready-to-play prompt (we call it a game card) that you open in your own AI assistant.

An AI logic puzzle is a deduction problem, such as who owns what or who went on when, with exactly one answer that follows from the clues. The answer is fixed in a file before release and a fingerprint of the answer (a SHA-256 hash) is published with the card, so the assistant checks your reasoning against a fixed answer and cannot be argued into yours.

New to AI games? Start with this guide: The best games to play with ChatGPT, Claude, and Gemini.

GameWhat it isPlayersLengthRated
The Ring of Five A sealed logic grid: five bells, twelve true remarks, fifteen cells to fill, and a third wrong entry spoils the board. 1 20–30 min All ages
The Chairman's Book A sealed ordering puzzle: seven music-hall acts, ten enquiries you pay for in minutes, and one submission that scores only if all seven are right. 1 30–45 min 12+

These games keep their answers in a sealed file on this site, so play them in a chat that can open links, such as ChatGPT or Claude.

Logic Puzzles № 022 The Ring of Five 1 player20–30 min Logic Puzzles № 023 The Chairman’s Book 1 player30–45 min

Can ChatGPT make a logic puzzle with one real answer?

A logic puzzle is worthless if the answer can move. Ask an assistant to invent one and it produces clues that look rigorous and a solution that does not quite follow, because it wrote the clues without ever solving them. Push back on its answer and it will often agree with you, which is the opposite of deduction.

These puzzles are built solution-first: the answer is fixed and sealed before the card ships, and every clue is written from it. The assistant referees against that sealed file. It can tell you an entry is wrong, and it cannot be talked out of a fact.

Each puzzle is checked before release to confirm the clues allow exactly one answer: The Ring of Five's twelve remarks fit one board out of 1,728,000, and The Chairman's Book's evidence leaves one running order of the 5,040 possible. The Chairman's Book adds a second problem, because its testimony costs more minutes than the morning holds, so you also decide which witnesses are worth paying for. When you finish, check the answer file at /verify/.

Questions about logic puzzles

I have never solved a logic grid. Is this a fair first one?

The Ring of Five is built for it: five bells, three facts to find about each, and the board redrawn every turn so you never need paper. One bell falls out of three remarks before you have painted anything, which is the on-ramp. The Chairman's Book is harder: it shows the enquiries you have bought but never a grid, and the court does not say how close you are, so a seven-slot grid on paper helps.

Can the AI just give me the answer?

No, on either card. The Ring of Five sells three grades of hint, from one naming a remark worth another look to one spelling out what a whole step proves, and none of them names a founder, a year or a duty. The Chairman's Book has no hints: you buy testimony with minutes, the Clerk never says which piece matters, and the court hears one submission. After a wrong one it does not tell you how many turns you had right.

What does a mistake cost?

In The Ring of Five a wrong entry is a smudge, and three smudges spoil the board and end the run at zero; crossing things out in your notes is free and unlimited. In The Chairman's Book a wrong submission ends the hearing with nothing entered and scores zero, though your declaration is read back to you first, so a typing slip cannot cost you. On both, say save to stop partway and resume in a new chat.

If you like logic puzzles