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Circle Sudoku Book

Welcome to this superb collection of 100 circle sudoku puzzles!

These puzzles all have their own solution towards the back of the book, so if you get stuck take a look there.

Here are some solving tips: Place each number from 1 - 8 exactly once in each of the eight concentric circles that compose the puzzle.

In addition, each number from 1 - 8 appears exactly once in each of the eight segments of the circle.

Each puzzle has one solution that can be reached through logic alone.

That's all there is to it!

These puzzles are printed on high quality paper with one samurai sudoku per page, making the puzzle-solving experience all the more enjoyable!

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

Circle Sudoku sample

The circle sudoku puzzle book 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:

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

Tips on Solving Circle Sudoku

The solving rules for circle sudoku are exactly the same actually as for normal sudoku, it is just the display of the puzzle that makes it appear different. And the display makes it harder for a human, too. That is because we find it much easier to read along straight lines, such as the rows and columns of normal sudoku.

However, the eye finds it harder to check the values in regions that are circular, such as with circle sudoku. This means that the main solving tip is actually to focus carefully when reading around a ring and make sure that the eye does not accidentally move to looking at the values in a different ring: it is easily done and can lead to frustration during the solving process.

The second tip is to be extra-diligent with your pencilmarks, as this will help you solve these puzzles without making too many mistakes and the frustration that can come from that. And keep your pencilmarks up to date, so each time you make a deduction or progress of any kind, be sure to work around the other parts of the region to work through and cross-off as necessary.

Do you have any particular methods you find works well with circle sudoku to help you solve the puzzles - and do you do something different to you would when solving ordinary sudoku puzzles? If so then please do let us know, we'd love to hear your thoughts on solving circle sudoku!

circle sudoku cover

circle 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...

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