Tag Archives: swordfish


The rules of Futoshiki are very simple: 1. The grid is square and can be of any size. Use numbers 1 to the size of the grid to solve the puzzle. 2. Numbers cannot be repeated in a row or column. All numbers must appear in each row and in each column. 3. The “more […]

Posted in Free sample puzzles, General | Also tagged , , , , , , , , | 1 Response

Odd Even Sudoku

Merry Christmas to all who celebrate this day! 🙂 As a small gift for you, I’ve prepared an odd-even sudoku variation puzzle. It’s not the first odd even puzzle I ever posted, but it is the first plain odd even sudoku. And to spice things up a little bit, this is a very difficult odd/even […]

Posted in Free sample puzzles, Sudoku Variants | Also tagged , , , , , , , , , , | 4 Responses

Sudoku for Kindle

300 difficult Sudoku puzzles for Kindle

Another Kindle game has been released. This is the first re-release for Kindle of a paperback sudoku book that I published before. It’s a collection of 300 classic Sudoku puzzles for Kindle. Now, those are not just your ordinary easy, repetitive Sudokus that you find in your local newspaper. No. These are tough. Challenging. Demanding. […]

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Prices on some of my books – SLASHED!

Some of my books are being heavily discounted at the moment. Before I introduce them to you once more, let me kindly ask you again to review my books on Amazon if you buy them. If you have already bought them, you can still do that. It means A LOT to me! My first Kakuro […]

Posted in Kakuro, Puzzle books, Sudoku Variants | Also tagged , , , , , , , , , , , , , , , | Leave a comment

Advanced Sudoku and Kakuro

Since my Sudoku K book is still a few months away, it is time to introduce another book with my Killer Sudoku and Samurai Sudoku puzzles and puzzles from other puzzle creators. The book I’m talking about is called “Teach Yourself: Advanced Sudoku and Kakuro” by Nick ‘Afka’ Thomas. A few words about the author […]

Posted in Kakuro, Killer Sudoku, Puzzle books, Samurai sudoku | Also tagged , , , , , , , , , , , , , , | 8 Responses


A while ago I explained the X-Wing solving technique. Recently I shown my explanation of other basic, Classic Sudoku solving techniques. The only remaining solving method that I don’t consider trial and error is Swordfish. So, to complete the list of Sudoku solving tips, here is an example of a Sudoku puzzle that can be […]

Posted in Solving tips | Also tagged , , , , , , , , | 34 Responses

Classic Sudoku Solving Techniques

It’s about time I finally explained the basic (and most common) Sudoku solving techniques. Most of you are already familiar with these, but for those who aren’t – I’d like to show my explanation. These techniques are used in ALL sudoku puzzles – Classic, Killer, Samurai and others. Make sure you fully understand them before […]

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Posted in Samurai sudoku, Solving tips | Also tagged , , , , , , , , , , , , | 10 Responses
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