Murdoku takes the clean placement logic of Sudoku and wraps it in a whodunnit. You read a short case file, place each suspect into the grid so every row and column holds them exactly once, and follow the clues until only one possible killer remains.
Manuel Garand · published by Puzzlewright Press (2025)
Where to play
Free new puzzles weekly at murdoku.com — plus published books
Best for
Players who like logic with a story; fans of Murdle & daily deduction games
Difficulty
Approachable — no Sudoku numbers required, just clues and logic
How Murdoku works
Instead of digits 1–9, a Murdoku grid is about suspects. The core rule is familiar to any Sudoku player: each suspect appears exactly once in every row and every column. The case text gives you clues — who was seen where, who couldn't have been next to whom — and you use pure deduction to place everyone. When the grid is complete, the layout reveals who was alone with the victim: your killer.
Read the case and note the suspects and clues.
Use the clues to place suspects, keeping each row and column unique.
Eliminate impossible positions step by step — never guess.
Finish the grid and identify the one suspect the logic points to.
Why we recommend it
Murdoku sits right in the sweet spot of the trend that made Murdle and the NYT logic games so popular: a short, daily, shareable puzzle that rewards clear thinking and gives you a little story to chew on. It's a great pick if you love Sudoku's logic but want a change of scenery — and because the official site posts fresh puzzles every week, it's an easy habit to keep.
Ready to try it?
Head to the official Murdoku site for this week's free puzzle.
Murdoku is a murder-mystery logic puzzle built on Sudoku-style placement rules: place each suspect so every row and column contains them once, then deduce the killer from the clues.
Is Murdoku free to play online?+
Yes — the official site posts new free puzzles to play online every week, and there are published Murdoku books too.
How is it different from Murdle?+
Murdle uses a classic suspects/weapons/locations deduction grid; Murdoku layers the murder story onto Sudoku-style row-and-column placement.
SudokuHunt is independent and not affiliated with Murdoku or its publisher. Murdoku is a trademark of its respective owner; we link to the official site to help you play.
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