Murder mystery sudoku — free daily detective logic puzzles

Someone has been murdered, and eight witnesses each say where they were. Place every suspect back on the crime scene — exactly one per row, never two in the same column — using nothing but their testimony. Whoever ends up alone with the victim did it.

Every case is generated fresh and machine-proved to have exactly one logical solution, so there is never a guess. Ten cases go out to the whole world each day: five to work at your own pace and five against the clock, from a 5×5 first case to a 10×9 expert board where one suspect lies about everything.

Today's 10 cases

Every detective in the world works the same crime scene today — The Repair Shop. 5 cases at your own pace, 5 against the clock.

Play today's case — free, no download

The ladder

Cases already closed

Every finished day keeps its solved boards and a full walkthrough of how each case was cracked — the testimony, the eliminations, and the name.

The whole case calendar

Learn to play

Written guides, from the first case to expert boards with a lying accomplice.

From the devlog

The crime scenes

The Courtroom · The Movie Studio · The Repair Shop · The Bunker · Movie Night · The Art School · The Old Harbor · The Cookie Thief · The Botanical Garden · The Hiking Trip · Blackbriar Manor · The Hotel Meridian · The Night Express · The Museum of Curiosities · The Old Observatory · The Theatre Royal · The Steamship Aurora · The Royal Greenhouse · The Backyard Garden · The Zoo · The Golf Course · A Walk in the Park · The Mystery Island

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