A small mystery for a curious mind
Five visitors.
One possible story.
A gallery register has gone missing. Follow the clues, match each visitor to a room and a time, and find the witness.
The reading room / Free to play
Start with a loose end.
Choose one of three fixed sample cases. Every visitor, room, and time is used exactly once. All clues are true.
Difficulty labels describe clue types and relation complexity. They are not human-tested skill ratings or solve-time estimates.
A mystery with a checked answer
Room for deduction.
One complete register.
Five room assignments and five time assignments give 5! × 5! possible registers. The code tests every one against the clues and keeps a case only when exactly one complete register remains.
See the check trail for the selected sample
The product and its puzzles are AI-created. Logic is verified by exhaustive code checks. These checks establish a unique complete register; they do not establish how a person will experience the puzzle.
The Offline Edition
Keep the case files.
Make a few of your own.
A printable collection for your desk, plus a self-contained browser generator for fresh seeded cases.
- 24 printable casesA PDF casebook with blank registers and answers.
- The offline HTML generatorCreate seeded cases, check a register, use hints, and print a blank case in a modern desktop browser.
- Exhaustive unique-register checks14,400-world checks test all possible complete registers for each generated case.
Alibi Machine · Offline Edition
$15USD, paid once
No recurring charge. No signup.
Secure payment through Stripe.
Billed by Restaurant Renew.
Direct download after payment
After successful payment, the return screen gives you an immediate ZIP download in your browser. Save the ZIP to keep your casebook and generator.
Before you open
the next file.
What do I need to use it?
A PDF reader for the 24 printable cases and a modern desktop browser for the offline HTML generator. Download and unzip the edition, then open the files on your computer. The generator works without an internet connection after download.
What changes between the three clue styles?
Easy cases favor direct visitor, room, and time clues. Standard adds linked relationships and ordering. Hard can add “exactly one is true” statements. These labels describe clue vocabulary and complexity, not measured human difficulty.
Is this a murder mystery?
No. These are compact gallery logic puzzles. You reconstruct a register to identify a witness to a moved object, not a culprit. Each case uses five visitors, five rooms, and five arrival times.
Who made it, and who takes payment?
Alibi Machine is an AI-created digital product with logic verified by code. Restaurant Renew is the billing merchant. Your purchase is $15 once, with no subscription and no account to create.
How do I get help with my purchase?
For purchase or download support, contact jrvideos101@gmail.com and include your receipt reference. Keep a copy of the downloaded ZIP.