"I told myself just one case before bed, three hours later I'd solved six. This book is dangerously addictive!"

Emily C, USA

Murdoku - Mystery Sudoku Puzzles

Murdoku - Mystery Sudoku Puzzles

 (2544+ reviews)
$29.99
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  • Spot the clues everyone else misses
  • Train razor-sharp deduction with every case you crack
  • Never fall for the obvious answer again
  • Notice your thinking getting sharper by the day
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Build a mind that misses nothing

Murdoku is the viral puzzle sensation that trains the skill sharp minds are built on: catching what everyone else walks past. Every crime scene hides the killer in plain sight, rewarding you for weighing every clue, testing every alibi, and trusting proof over first impressions.

The more cases you crack, the more that detective instinct sticks - until spotting the details others miss becomes something you do without thinking.

  • learn to think three steps ahead
  • solve at your own pace, anytime, anywhere
The habit that makes you sharper

The habit that makes you sharper

Most downtime habits leave your brain duller, Murdoku does the opposite. Each of the 80 cases climbs in difficulty as you improve, so every session pushes your thinking a little further, keeping you challenged without ever leaving you stuck.

Give it a week, and you'll feel the difference - quicker conclusions, cleaner logic, and a mind that works faster than ever before.

  • 80 unique, mind-testing cases
What's waiting inside...

What's waiting inside...

Inside these pages, you'll find everything you need to solve like a seasoned detective - and skills that stay sharp long after the case is closed:

80 original murder cases, each one a fully illustrated crime scene
The genius mix of Sudoku logic & Cluedo-style mystery solving
Full-color scenes where every room, object & suspect matters
Clues that let you place each suspect - and expose who was alone with the victim
Unique settings to investigate, from a casino to a chess tournament to an opera
Difficulty that builds from elementary to expert, so cases grow with your skill
Twists & special rules that keep even seasoned solvers guessing
That unbeatable moment when the killer finally has nowhere to hide
93%

Noticed sharper focus & faster thinking within the first two weeks

88%

Said the difficulty curve kept them hooked from the first case to the last

92%

Said solving a case was more satisfying than anything on their phone

*based on our 2025 customer survey

Over 7,800+ detectives worldwide

Patricia W”
★★★★★
My brain feels awake again!

I hadn't done puzzles since school and figured I'd lost the knack. Twenty cases in and I'm catching things at work I never used to notice. My husband keeps asking why I'm suddenly so hard to argue with.

Patricia W, USA
Jason R”
★★★★★
Beat my screen addiction in a week.

I used to lose two hours a night to my phone. Now I pour a coffee, open a case, and the evening actually feels like mine again. Best swap I've ever made.

Jason R, USA
Sora W”
★★★★★
The difficulty curve is genius

The early cases made me feel clever, then around case 30 it started fighting back. I've never been so happily frustrated, when you finally pin the killer it's the best feeling.

Sora W, UK
Michael D”
★★★★★
Bought one, ended up ordering three!

Got it for myself, then my dad stole it, then my sister wanted her own. Christmas sorted for the whole family this year.

Michael D, USA
Sophie L”
★★★★★
Better than any crime show!

I've watched every detective series going, but actually being the one solving it is a different thing entirely. The illustrated scenes pull you right in. It's like being dropped inside an episode.

Sophie L, Australia
Derek H”
★★★★★
Didn't expect it to change how I think.

I bought it for fun, but somewhere around the halfway mark, I noticed I was making decisions faster and second-guessing myself less. It's a puzzle book that quietly trains you.

Derek H, Canada

Frequently Asked Questions

Do I need to be good at Sudoku to enjoy Murdoku?
Not at all. Murdoku uses simple logic-based placement rather than numbers, and the opening cases teach you everything as you go. If you can follow a clue, you can solve a case.
How does Murdoku actually work?
Each puzzle is an illustrated crime scene. Using the clues provided, you work out exactly where each suspect was positioned - and once every suspect is placed, the killer is revealed as the one who was alone with the victim.
Can I do the puzzles in any order?
You can, though we recommend starting from the beginning - the cases are arranged so your skills build naturally, and later puzzles introduce rules that are easier once you've mastered the basics.
How many puzzles are inside?
There are 80 original cases, each one a self-contained mystery with its own unique crime scene, suspects, and clues.
How difficult are the puzzles?
The book starts at an easy, beginner-friendly level and gradually climbs to expert difficulty. Later cases also introduce twists and special rules, so the challenge grows with your skill.
Are the solutions included?
Yes - every case has a full solution in the back, so if a mystery has you completely stumped, you can check your reasoning and jump straight into the next one.
Is it suitable as a gift?
Absolutely - it's a favorite for puzzle lovers, crime fiction fans, and anyone who enjoys a challenge. The full-color illustrated scenes also make it feel far more premium than a standard puzzle book.
Will this actually help my thinking outside the book?
Many readers say so. The skills you practice - weighing evidence, spotting patterns, ruling out the impossible - are the same ones behind sharper everyday decisions, and they tend to stick the more you play.