Please try out the new beta version of our Sudoku Of The Day website!

What is Sudoku?

Sudoku is a logical puzzle game, originally created in puzzle books and then made available in countless newspapers worldwide. We explain what makes a Sudoku and why solving them is good for you.

How to start

Sudoku may seem difficult at first glance, but actually it is not as hard as it looks! The aim is to fill in the whole grid – and depending on the difficulty of the puzzle this can be quite easy (just counting and checking), or later on for more tricky puzzles require a bit more logic and reasoning. We explain how to complete your first Sudoku puzzle.

Techniques

Learn how to go from simple, easy to learn deduction techniques such as Single Position and Single Candidate through to the mind-bending Swordfish and Nishio techniques. And how, if all else fails, you can guess!

Daily Sudoku puzzles

You can find six brand-new puzzles here every day, ranging from beginner through to diabolical puzzles that require the most advanced techniques. Here’s one of today’s puzzles:

Get the app

For the best Sudoku playing experience, download our free* Sudoku of the Day app! You’ll get easy access to all six daily puzzles, a range of easy to use tools such as pencilmarks and smart hints, plus you can upgrade to access the puzzle generator and puzzle solver.

New beta website

We’ve been working over the last couple of months on a completely new version of Sudoku Of The Day – quicker, cleaner and generally more modern! We’d love it if you’d try out the beta website and let us know if you spot any problems or anything you think we could improve!

New Printable Options for Daily Puzzles!

New today!  Our Puzzle pages now have a new pair of icons available – these take you directly to a full-sized version of the puzzle ready for printing to play offline! The  Print icon will give you the puzzle with a blank grid, and the Pencil icon will give you the page with all of […]