40 x 40 Enormous Sudoku Book

Welcome to this fantastic collection of 100 ENORMOUS sudoku puzzles, in a huge 40x40 grid size. If you're a fan of traditional 9x9 sudoku but need an extra challenge, look no further. Perhaps you've already advanced to 12x12, or even 36x36. If you still feel you can go bigger and better- this is the book for you!

This book is guaranteed to bring hours and hours of mind-boggling fun. Each puzzle requires your very best puzzle solving skills to crack. With 100 puzzles to keep you busy, we are sure this collection will bring you a huge amount of fun.

Place each number from 1 - 40 exactly once in each row, column and bold-lined box. All puzzles are carefully selected to be solvable without requiring pencilmarks, since writing options from 1 - 40 in a square is hardly practical. You'll never need to guess when solving these puzzles, and they each have a unique solution. Can you solve them all?

Full solutions are listed towards the back of the book so if you get stuck along the way- take a peek there!

All of our puzzle books are printed on very high quality paper, making the puzzle experience all the more enjoyable! Please do let us know what you thought of this HUGE grid size. We love your feedback!

If you would like to try one of the puzzles before buying this book, please click the link below:

Enormous sudoku sample

The book of enormous sudoku is available to purchase right now from Amazon.co.uk, Amazon.com and Amazon.eu. Please click the relevant link below to purchase this book via Amazon:

Buy Enormous Sudoku from Amazon (UK) for £6.99

Buy Enormous Sudoku from Amazon (US) for $11.99

If you're based in Europe but outside the UK, then this book is also available on the version of Amazon in your country.

Enormous sudoku interior

How to Solve Futoshiki Puzzles

In our new series of videos, you can learn about new puzzle types and take part in quizzes. Why not have a watch?

In this video we look at the rules of futoshiki and how they work. We examine the greater than and less than signs that are the key addition to standard sudoku rules. Take a look if you're tempted to have a go at this puzzle type...

If you are a publisher looking to purchase puzzles for publication, or a license to use material from our books, please use this Contact Form to get in touch.

For individuals with comments, questions or ideas with regard to our puzzle books, then please use this Contact Form to drop us a line.

Gift Ideas and Key Links

Brain Training

Sudoku Puzzles

Word Puzzles

Logic / Number

Image / Visual

Other Books

Puzzle Tools Etc.

40 x 40 Enormous Sudoku Book

How to Solve Futoshiki Puzzles