Every detective in the world got these same crime scenes on 2026-09-20 — 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: Garden Path, Visitor Center, Orchid House. Seven statements, six squares nobody could stand on, and enough testimony that the surplus is what pins the last two down.
Cracked by 10 detectives so far.
A 5×5 grid across 4 rooms: Cactus House, Tropical House, Visitor Center, Orchid House. Six statements, four squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 2 detectives so far.
A 6×6 grid across 4 rooms: Garden Path, Tropical House, Palm Pavilion, Seed Vault. Eight statements, eight squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 8 detectives so far.
A 6×6 grid across 5 rooms: Garden Path, Seed Vault, Visitor Center, Cactus House, Compost Yard. Seven statements, nine squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 2 detectives so far.
A 7×7 grid across 6 rooms: Palm Pavilion, Compost Yard, Seed Vault, Tropical House, Visitor Center, Orchid House. Eight statements, eight squares nobody could stand on, almost as many rooms as suspects, so a room claim nearly names a square, and no assumption anywhere: elimination alone closes it.
Cracked by 3 detectives so far.
A 7×7 grid across 5 rooms: Garden Path, Visitor Center, Tropical House, Palm Pavilion, Seed Vault. Nine statements, nine squares nobody could stand on, and no assumption anywhere: elimination alone closes it.
Cracked by 8 detectives so far.
An 8×8 grid across 6 rooms: Orchid House, Compost Yard, Visitor Center, Tropical House, Cactus House, Seed Vault. Twelve statements, fourteen squares nobody could stand on, and one round of assume-and-test after elimination ran dry.
Cracked by 7 detectives so far.
A 10×8 grid across 7 rooms: Seed Vault, Lily Pond, Garden Path, Palm Pavilion, Orchid House, Visitor Center, Tropical House. Thirteen statements, eleven 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.
The twist: the accusation also demands the motive, not just the name.
Cracked by 2 detectives so far.
A 9×9 grid across 8 rooms: Orchid House, Tropical House, Seed Vault, Visitor Center, Compost Yard, Garden Path, Lily Pond, Palm Pavilion. Sixteen statements, fifteen 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 6 detectives so far.
A 9×9 grid across 7 rooms: Orchid House, Tropical House, Cactus House, Palm Pavilion, Garden Path, Seed Vault, Visitor Center. Nineteen statements, fifteen 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 2 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 19 September