The Home of Perfect Sudoku and other puzzles
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…
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…
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…
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…
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…
Here is another very special puzzle – it’s an odd/even Sudoku puzzle but it also has clues on top and on the side, just the same as in Hanjie puzzles. This puzzle was provided by Clagu, our regular visitor from…
It’s been a while! 🙂 For various reasons I haven’t made any posts in the last few months but that’s about to change. Thanks to Princess Amy, I’m presenting you a very special Sudoku puzzle. It consists of 1 Killer,…
Here is something brand new, well, for this site anyway: Hanjie puzzles, previously known under the name “Tsunami”. I have been supplying these puzzles to Euromedia Finland since July who are publishing a Hanjie magazine every month. Each issue of…
How many Sudoku variants are there? I don’t know. To calculate, you’d have to multiply the number of overlapping types with the number of variants that impose additional constraints on each puzzle. I produce puzzles with 5 different constraints: Killer,…
I’m posting this article on behalf of CathyW, one of our regular visitors. It’s about solving sudokus and raising funds at the same time for a very good cause The National Autistic Society (NAS) is calling upon the nation to…