Logic puzzle books · Grid Mysteries
Grid MysteriesThe Little Detectives
by Milo Carter
The sudoku-style detective game that gets 6- to 8-year-olds reasoning step by step… with no screen at all.
- Ages 6-8
- English
- 94 pages
- Paperback, 8.5 × 11 in, full color
Also onamazon.co.uk★amazon.ca★amazon.com.au★
Direct links to Amazon, no affiliate links. Price and delivery times are shown on Amazon. Ratings checked on Amazon on November 11 and 13, 2026.
In a nutshell
Something has gone missing: the teacher’s pencil case, the snack, the school’s soccer trophy… Now your child is on the case! They read the clues, place the suspects and the missing object in the grid (only one token per row and per column, just like sudoku) and work out who was in the same area as the object.
A playful way to read carefully, look closely and think things through. At the start of the book a practice case is solved step by step, and the “Do Not Cross” strips help children see which rows and columns are blocked.
Also in other languages
- FRMystères en grille – Les petits détectives5.0/5 · 2 ratings on amazon.framazon.fr →★ Write a review
- ITMisteri in griglia – I piccoli detectiveamazon.it →★ Write a review
- ESMisterios en cuadrícula – Los pequeños detectivesamazon.es →★ Write a review
- DERätsel im Raster – Die kleinen Detektiveamazon.de →★ Write a review
What’s inside
- 60 cases that get harder bit by bitSix worlds: the school, the house, the park, the farm, the beach and the zoo.
- 3 levels4×4 grids to get started, then 5×5 and 6×6.
- A guided caseThe practice case is solved step by step, so the rules are easy to learn.
- A hint on every pagePrinted upside down at the bottom of the page: search first, peek later.
- 24 tokens to cut outPlus “Do Not Cross” strips to see the blocked rows and columns.
- Solutions explainedEvery solution is explained step by step, which helps parents too. Plus a detective card and a Super Detective diploma.
Free
Read a sample before you buy
Get a free sample of “Grid Mysteries – The Little Detectives” by email: 9 pages (the rules, the practice case and two cases), as a PDF to read or print.
Look inside
Pages from the book
Real pages from the book. Tap an image to enlarge it.
How do you solve a case?
1. Read the clues
Each clue tells you where a character was: on a chair, next to a tree, in the schoolyard…
2. Place the tokens
Only one token per row and per column, just like sudoku. Cross out the squares that can’t work.
3. Unmask the culprit
The culprit is the only suspect who was in the same area as the missing object.
Free · no sign-up · a new one every Wednesday
Try a case before you buy
Puzzle of the week: The Teacher’s Pencil Case (ages 6-8, 4×4 grid). The same idea as in the book: read the clues, place the tokens, find the culprit.
Questions from parents
Good to know
Ages 6-8 or 9-12: which book is right?
This book (ages 6-8) starts with 4×4 grids and goes up to 6×6. The book for ages 9-12 goes from 6×6 to 8×8. For an 8- or 9-year-old who has never played this kind of game, this one is the better place to start. The book for ages 9-12 →
What if my child gets stuck?
Every page has a small hint printed upside down, and at the end of the book all the solutions are explained step by step.
How do you learn the rules?
At the start of the book, the “How to Solve a Case” page explains the rules in 5 points, and a practice case is solved step by step. On our website, the puzzle of the week lets you play a case online or print it, with its solution explained. The puzzle of the week →
Does it work in the classroom?
Yes, it’s a great game for practicing careful reading and logic. Our free teaching guide for this book (student missions, answer key and diploma) is ready to print. Teachers can also write to us. For teachers →
Is it available in other languages?
Yes, in French, Italian, Spanish and German. Handy for bilingual families, or for practicing logic in another language.
