Every detective in the world got these same crime scenes on 2026-09-15 — each difficulty published twice, once untimed and once as time attack. Each case is procedurally generated and then proved to have exactly one logical solution before it is published, including the cases where somebody is lying. You place every suspect back on the map using only their testimony: exactly one person per row, never two in a column. Whoever is left alone with the victim did it.
A 5×5 grid across 3 rooms: Waiting Room, Repair Bay, Pit Lane. Six statements, seven squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 33 detectives so far.
A 5×5 grid across 4 rooms: Storeroom, Repair Bay, Car Lift, Pit Lane. Six statements, eight squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 6 detectives so far.
A 6×6 grid across 5 rooms: Car Lift, Yard, Repair Bay, Pit Lane, Parts Room. Seven statements, ten squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 29 detectives so far.
A 6×6 grid across 5 rooms: Pit Lane, Paint Booth, Car Lift, Storeroom, Waiting Room. Six statements, nine squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 3 detectives so far.
A 7×7 grid across 6 rooms: Paint Booth, Waiting Room, Repair Bay, Storeroom, Parts Room, Yard. Twelve statements, fourteen squares nobody could stand on, almost as many rooms as suspects, so a room claim nearly names a square, and one round of assume-and-test after elimination ran dry — and one of the seven was lying throughout.
The twist: one suspect is an accomplice — every statement they make is false.
Cracked by 3 detectives so far.
A 7×7 grid across 5 rooms: Waiting Room, Parts Room, Car Lift, Office, Storeroom. Nine statements, twelve squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 25 detectives so far.
An 8×8 grid across 6 rooms: Office, Paint Booth, Parts Room, Repair Bay, Pit Lane, Car Lift. Eleven statements, sixteen squares nobody could stand on, and one round of assume-and-test after elimination ran dry.
Cracked by 12 detectives so far.
An 8×8 grid across 7 rooms: Pit Lane, Yard, Parts Room, Paint Booth, Car Lift, Waiting Room, Repair Bay. Eleven statements, sixteen squares nobody could stand on, almost as many rooms as suspects, so a room claim nearly names a square, and one round of assume-and-test after elimination ran dry.
Cracked by 7 detectives so far.
A 9×9 grid across 7 rooms: Waiting Room, Repair Bay, Parts Room, Pit Lane, Car Lift, Office, Yard. Nineteen statements, twenty squares nobody could stand on, and two rounds of assume-and-test after elimination ran dry — and one of the nine was lying throughout.
The twist: one suspect is an accomplice — every statement they make is false.
Cracked by 4 detectives so far.
A 9×9 grid across 8 rooms: Car Lift, Waiting Room, Repair Bay, Storeroom, Yard, Paint Booth, Parts Room, Office. Eighteen statements, eighteen squares nobody could stand on, almost as many rooms as suspects, so a room claim nearly names a square, and two rounds of assume-and-test after elimination ran dry — and one of the nine was lying throughout.
The twist: one suspect is an accomplice — every statement they make is false; the accusation also demands the motive, not just the name.
Cracked by 4 detectives so far.
The grid size is the size of the crime scene, so a 10×9 expert case is a far larger search than a 5×5 beginner one — but the difficulty is really carried by the clues, not the square count. A beginner case tells you almost directly where somebody stood. An expert case tells you where somebody was not, three times, and expects you to do the rest — and on half of them one of those statements is a lie told to protect the killer. If a case lists a motive, naming the right person is not enough on its own; you have to prove why.
How to play · Solving cases with a liar · Techniques
Every day's cases — the calendar · ← the cases for 14 September