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.

Category Archives: Jigsaw Sudoku

Jigsaw Sudoku puzzles and variants thereof. Solving tips explained. The Law of Leftovers. And more. Jigsaw Sudoku books, too.

Jigsaw Sudoku in Flower Sudoku format (5 in 1 Gattai-5)

This should be a tough one – perhaps too tough? It’s only rated “BRAIN”, but the layout makes it quite difficult, I think. 5 overlapping Jigsaw Sudoku puzzles put together in the Flower Sudoku (Gattai-5) layout, which is similar to Samurai Sudoku but not exactly the same. Make sure to use the “Twin Nonets” solving […]
Jigsaw Samurai Sudoku book

Also posted in Free sample puzzles, Samurai sudoku | Tagged , , , , , , , , , | 8 Responses

Jigsaw+Classic Sudoku combination

Today’s puzzle on the Daily Sudoku variants page is somewhat ambiguous. This is why I’m duplicating it here on the main page. Basically, it’s a Classic and Jigsaw Sudoku combination. In addition to 9 Jigsaw nonets, there are 9 classic Sudoku nonets too. You have to use them both in order to solve the puzzle. […]
Jigsaw Sudoku Puzzle Book

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OddEven Jigsaw Samurai Sudoku

It’s been a while since I last posted a Samurai Sudoku variant puzzle. Here is a new one. As far as I remember, I never posted such puzzle before. Remember: shaded cells MUST contain only ODD numbers! OddEven Jigsaw Samurai Sudoku for Thursday, January 14, 2010 – Difficulty: COOL. Click on the puzzle thumbnail to […]
Jigsaw Samurai Sudoku book

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Outside Jigsaw Sudoku

Another novelty in 2010 – Outside Jigsaw Sudoku. Read the rules of Outside Sudoku first. And then, twist it a little – it’s a Jigsaw (Irregular) Sudoku puzzle! UPDATE: One clarification about the rules of Outside Jigsaw Sudokus: The clues tell you which numbers appear in the 3 closest cells in that row/column. They are […]
Jigsaw Sudoku Puzzle Book

Also posted in Free sample puzzles, Sudoku Variants | Tagged , , , , , , | 4 Responses

Happy New Year!

I hope you all had a nice Christmas and that you are enduring the cold weather well. Well, those in the Northern hemisphere anyway. 🙂 Let me tell you about the changes that I plan for 2009: There will be more Jigsaw Sudoku puzzles on the Daily Sudoku variants page. They will be accompanied by […]
Also posted in General, Picross, Puzzle variants, Sudoku Variants | Tagged , , , , , , , , , , , , , , , , , , , , , , , , | 10 Responses

Perfect Sudoku puzzles in Norway!

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.
Also posted in Puzzle books | Tagged , , | Leave a comment

Zero Killer Sudoku

A few visitors to my forum have been creating these puzzles for quite some time. Well, here is one from me. Rules: Everything is exactly the same as in your ordinary Killer Sudoku puzzles, except that there are even fewer clues given to you to start with. Some cells are not joined in any cages, […]
Zero Killer Sudoku

Also posted in Free sample puzzles, Killer Sudoku, Sudoku Variants | Tagged , , , , , , , , , , , , , , , , , | 9 Responses

The Law of Leftovers (LOL)

I promised to explain this technique, which applies to Jigsaw Sudoku (aka irregular blocks) puzzles, a while ago, so it’s time to keep the promise. You can find the same technique explained on various other sites, too. This technique is somewhat similar to innies/outies which is used for solving Killer Sudoku puzzles, but there is […]
Also posted in Killer Sudoku, Solving tips | Tagged , , , , , , , , , , , , , , , , , , , , | 3 Responses

Jigsaw TwoDoku

Hello everyone, I’m back! 🙂 After a few weeks of no updates and some problems with the site, it’s time to get back to usual daily and weekly routines. The Washington Post Samurai Sudoku solutions have been updated. The Weekly Samurai X puzzles is now also in place. On Tuesday, there will be a new […]
Jigsaw Samurai Sudoku book

Also posted in Free sample puzzles, Samurai sudoku, Sudoku Variants, Washington Post | Tagged , , , , , , , , , , , , , | Leave a comment

Jigsaw Samurai Sudoku

It has been hinted that this kind of puzzle was going to be posted soon – and to end the suspense, here it is! 🙂 My first ever Jigsaw Samurai Sudoku! Not so many sites produce these puzzles. I might consider including them more often, or maybe even on a regular basis. We’ll see. Jigsaw […]
Jigsaw Samurai Sudoku book

Also posted in Free sample puzzles, Samurai sudoku | Tagged , , , , , , , , , , | 7 Responses
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