Tag Archives: COOL

Non-Consecutive Sudoku Compendium

To the best of my knowledge, no book exists with non-consecutive sudoku puzzles. Well, that’s about to change NOW! I’ve prepared 150 Non-Consecutive Sudoku puzzles and put them in a book called “Non-Consecutive Sudoku Compendium”. This sudoku compendium is available as a paperback and can be purchased on Amazon. In this book you will find: […]
Posted in Puzzle books, Sudoku Variants | Also tagged , , , , , , , , , , , , , , | 11 Responses

Revenge of Killer Sudoku: 150 puzzles

About a year after my first Killer Sudoku book, I am ready to present you with a completely new book with my Killer Sudoku puzzles: Revenge of Killer Sudoku: 150 puzzles has been released! (click on the cover page to go to lulu and buy!) US $5.99 or £3.30 or €4.82 (PDF e-book) (payable by […]
Posted in General, Killer Sudoku, Puzzle books | Also tagged , , , , , , , , , , , , , , , , | 6 Responses

HYPER (aka Windoku) Samurai Sudoku

Ok, some of you thought that my previous invention was “nice” or even “very cool”, but some also thought that it was “really easy” and “not a challenge”. So I have to keep inventing new stuff. I quickly checked the web and couldn’t find this variation. If you’ve already seen it, please let me know. […]
Posted in Free sample puzzles, Samurai sudoku | Also tagged , , , , , | 4 Responses

Double X on the Daily Page

I just uploaded another Double Trouble X puzzle on the Daily Sudoku Page. I intend to post these puzzles everytime I post an “Easy” or “Cool” Killer Sudoku, so keep an eye on that page too.
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Cool your brains!

According to the comments, a lot of people enjoyed the IQ Killer posted on Friday. It’s time to cool your brains off a little, with the today’s “COOL” puzzle. For those who haven’t had enough, I posted a really tough Diagonal classic Sudoku. We’re doing quite well on the top 50 Sudoku sites list. A […]
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“COOL” for Monday

I just posted today’s puzzle – rated “cool”. Remember, this is on “easy, cool, thinker, brain, iq, insane” scale. The difficulty is shown in the image along with the numeric indication of the difficulty. So this number can be used to compare two puzzles that have same difficulty levels. Thanx to R.Spurgeon who was quick […]
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Puzzle difficulty rating

As promised, I’ve implemented a difficulty rating system in my Perfect Sudoku software and from now on I will be publishing the level for each puzzle. I’d like to get some response from you on this – how do you rate these puzzles that I’ve been posting? Here is what I came up with. These […]
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