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Puzzles · 2026-10-12

Free Printable Logic Puzzles for Adults (Murder Mystery Edition)

Free murder-mystery logic puzzles you can print or play online — a new floor-plan case every day, five free printable cases, and how these "murder sudoku" puzzles work.

A floor-plan murder mystery logic puzzle solved step by step

If you like sudoku but wish it had a story, you'll like murder-mystery logic puzzles. Instead of digits you place suspects; instead of a 9×9 grid you get a floor plan with furniture and rooms; and instead of a finished grid, the reward is a name: the killer.

Here's where to find them free, and how to solve them.

1. A free puzzle every day, online

Room for Murder Daily
Free, every day

Room for Murder Daily

A new floor-plan murder mystery every morning: place the suspects, find who was alone with the victim. No sign-up, works on phones.

Play today's case

Room for Murder Daily publishes a new case every day at midnight. Mondays are small 5×5 houses; by Saturday you're working through 7×7 mansions with gardens; and on Sundays the killer lies. Every case is checked by a solver to have exactly one answer you can reach without guessing. You can also print any case from the page and solve it with a pencil.

2. Five free printable cases

Join our e-mail list (the box at the bottom of the home page) and we'll send you a free 5-case printable sampler: the rules, a worked example, five cases from easy to devious — including a lying-killer case — and full solutions. It prints on US Letter or A4.

How the puzzles work

The rules fit on a sticky note:

  1. One person per row and per column — like sudoku.
  2. Nobody stands on solid furniture (tables, plants, shelves); chairs, sofas, beds and rugs are fine.
  3. Every witness tells the truth — "I was beside the piano", "I was alone with Ada".
  4. The victim was alone in a room with exactly one other person. That person is the killer.

A case solved in five steps

The fun is in the chain of deductions: one witness's statement fits only one square; that rules out a row and a column for everyone else; which pins the next witness; and so on until the last suspect drops into place. Our how to play guide explains every type of clue.

Why adults love them

Want a whole book of them?

A page from the Room for Murder book: a 9×9 café with nine suspects

Room for Murder collects 80 brand-new cases in five chapters — from cosy cottages to a lying-killer chapter and one grand final case — with a cast of 40 recurring neighbours and answers in the back.

Room for Murder
Murder sudoku puzzle book

Room for Murder

80 floor-plan murder mysteries in five chapters, from cosy cottages to a lying-killer finale — the book behind this site.

Solo or together

See it on Etsy

Bigger logic puzzles for a long evening

If a 10-minute puzzle leaves you wanting more, try a case file: one big elimination puzzle with hundreds of records — coats in a 1920s cloakroom, riders on a ghost train, houses on a 1970s street map — and a dozen clues that cross them out until one killer is left. They take two or three hours and make a great date night.

The Cloakroom Killer
Printable murder mystery case file

The Cloakroom Killer

Christmas Eve 1929: 800 coats, 12 clues and one killer. A logic-elimination puzzle for a cosy evening.

1–4 solvers

See it on Etsy
The Porch Light Killer
Printable map-puzzle case file

The Porch Light Killer

Halloween 1978: find the killer's house on an illustrated street map of 320 homes, using porch lights, pumpkins and 12 clues.

1–4 solvers

See it on Etsy

We make the games mentioned in this guide — that's why we know them well. Links to Etsy go to our own shop, Midnight Motive.