This is the archive of the old posts from Djape .Net, more or less as they used to be. Please go to djape.net to see the new website.

Tag Archives: sudoku x

How to solve Diagonal Sudoku X

By djape | Published: December 8, 2012
I realize that I’ve never posted two sudoku solving techniques which are specific to Diagonal Sudoku puzzles. Here they are. Diagonal and nonet interaction This one is a simple extension of the “row/column and nonet interaction technique”. Just look at this sample puzzle which has been solved using the standard techniques up to this point: […]
Posted in Solving tips, Sudoku Variants | Also tagged , , , , , , , , | Leave a comment

Diagonal Sudoku

By djape | Published: December 7, 2012
Can you imagine that I never posted a plain Diagonal Sudoku X puzzle here on the main page? I’ve posted a few Diagonal Samurai Sudoku puzzles and of course I often post Sudoku X puzzles on the Sudoku Variants page. Well, that’s about to change. 🙂 Here is a Sodoku X puzzle which is not […]
Diagonal Sudoku book

Posted in Free sample puzzles, Sudoku Variants | Also tagged , , , , , , , , , | 5 Responses

Outside Sudoku and its variants: You Really Should Try this Type of Sudoku

By djape | Published: December 22, 2011
After two new book reviews from Amazon that I posted, here I’m posting all reviews of one of the books that should catch your attention: Outside Sudoku and its variants. This book is special because it contains a variety of a variety. 🙂 Outside Sudoku puzzles have essentially the same rules as classic Sudoku, but […]
Posted in Jigsaw Sudoku, Reviews | Also tagged , , , , , , , , , , , , , , , , , , , , , , , | 2 Responses

Diagonal Killer Samurai Sudoku X – thanks to my Facebook group

By djape | Published: September 26, 2011
On my Killer and Samurai Sudoku fans Facebook page I recently asked members to post a link to this Facebook group on their walls in order to help me promote it. I also decided to award the first poster with a puzzle of their choice. Who was the first one? Well, you can have a […]
Killer Sudoku Samurai: 65 puzzles (Volume 1)

Posted in Free sample puzzles, Killer Sudoku, Samurai sudoku, Sudoku Variants | Also tagged , , , , , , , , , , , , | 1 Response

Triangular Sudoku variant: TriDoku X

By djape | Published: February 18, 2010
If you can have Diagonal Sudoku or Sudoku X puzzles, why not have a TriDoku X? Although it looks more like a TriDoku *, I decided to keep the “X” in the name. Perhaps it could be called a TriDoku Star? Whatever you call it, I think the additional rules are obvious: in addition to […]
Tridoku , triangular Sudoku

Posted in Free sample puzzles, Sudoku Variants | Also tagged , , , , , , | 3 Responses

Perfect Sudoku puzzles in Norway!

By djape | Published: October 10, 2007
It is with great pleasure that I announce that my puzzles will now be published in Norway too! A weekly magazine called Ukeavisen Ledelse will start publishing my puzzles this Friday, October 12, 2007. They will print a variety of my puzzles, including vanilla Sudoku, Sudoku X and Jigsaw Sudoku.
Posted in Jigsaw Sudoku, Puzzle books | Also tagged , | Leave a comment

Clueless Zero Killer Sudoku

By djape | Published: August 30, 2007
This could well be the most difficult puzzle I’ve ever created. Yet, unlike some previous ones which were intentionally created to require trial&error, this one can surely be solved without guessing. This is a Zero Killer Sudoku puzzle in a Clueless format. Once more I want to thank Ruud for inventing the “Clueless” arrangement of […]
Fiendish Killer Sudoku Book

Posted in Free sample puzzles, Killer Sudoku | Also tagged , , , , , , , | 12 Responses

Butterfly Killer Sudoku X

By djape | Published: September 21, 2006
It’s been a while since I last posted a Butterfly Killer, let alone one with the “X” factor. So, here it is – and to spice it up a little, I made it quite hard (altho I expect someone to get back in 20 minutes and say it was way too easy). So, you get […]
Fiendish Killer Sudoku Book

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Sudoku Samurai

By djape | Published: August 29, 2006
I realized that it’s been quite a while since I last posted a “vanilla” Samurai Sudoku puzzle, so today, in addition to our regular Tuesday’s Samurai Sudoku X, you get a special treat of another Samurai puzzle. Samurai Sudoku for Tuesday, August 29 – difficulty IQ (not for the fainthearted!) Click on the puzzle thumbnail […]
Super Sudoku Quad Samurai Puzzle Book with Variants

Posted in Free sample puzzles, Samurai sudoku | Also tagged , , , | 5 Responses

More Perfect Sudoku in Switzerland!

By djape | Published: May 3, 2006
I am very pleased to make these two announcements – both are related to publications in Switzerland only: 1. A book by Thierry Godel (published by Favre) has come out. It is called “L’essentiel du Sudoku” and it contains various Sudoku puzzles created, naturally, by Perfect Sudoku. Thierry is THE Sudoku man in Switzerland. I […]
Posted in Puzzle books | Also tagged , , , | 1 Response
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