Learn murder sudoku, from your first case to Expert
The rules, every kind of clue, the techniques that crack hard cases and the words players use. Start at the top if you are new, or jump to the page you need.
Start here What is a murder sudoku Suspects instead of numbers, rooms instead of boxes, and one body. Read it → Guide How to play A full case solved from the first clue to the murderer. Read the guide → Reference The rules One suspect per row and column, and who counts as alone. See the rules → Seven kinds Clue types Beside, corner, alone, on an object and the rest, each with examples. See every clue → Six techniques Solving techniques Reading clues, pinned suspects, room counting, shared rows and the rest. Learn them → Words Glossary Every term from the clue list and the board, on one page. Look it up → Answers FAQ The questions people ask before and after their first case. Read the FAQ → Levels Difficulty and hints Easy to Expert, what changes between them, and how hints work. Pick a level →
Where to start
A path from your first case to Expert deductions
1
First case
Learn how the board records what you know, then solve an Easy case.
What is a murder sudokuHow to play2
Real techniques
Read each clue as a map of the board, then count rooms and spot shared rows.
Reading cluesRoom countingShared rows3
Expert
Follow an assumption to a contradiction and prove the one answer left.
ContradictionDifficulty and hints Today's case
Put it to work on a real case
A new murder at midnight UTC, free in the browser, with one arrangement that fits every clue.
Questions
How do you solve a murder sudoku?
Place each suspect so every row and column holds exactly one person, using the clues to rule cells out. When the board is full, the one person alone with the victim is the murderer.
Is it the same as killer sudoku?
No. Killer sudoku is digits and cage sums. A murder sudoku has no numbers: you place people with one sudoku rule and plain-sentence clues.
Do I need to guess?
Never. Every case has one solution, and you can reach it by deduction alone.
Is it free?
Yes. The daily case is free in the browser every day, with no account.
Which clue should I read first?
The one that says the most. A clue that puts someone on an object or in a small room often places them straight away.
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