Butterfly Killer Sudoku X
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…
Author: djape
Traveler. Tanguero. Sailor. Puzzle maker. PhD student. Computer Scientist. Author of over 70 puzzle books.
First Anniversary of www.djape.net (belated)
Well, folks, it’s been more than one year since I started posting puzzles on this website and I’d like to write a few words about that. Actually, since this site has become popular thanks to Killer Sudoku puzzles I intended…
Consecutive Butterfly Sudoku
Someone 😉 complained and asked for more new variants and specifically for cons/non-cons puzzles. So here it is – first ever Consecutive Butterfly (4 in 1) Sudoku puzzle. “Pipes” (“|” symbols) between cells mean that those cells must contain consecutive…
Sudokuthon in aid of National Autistic Society
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…
Sudoku Samurai
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…
Samurai Sudoku – Butterfly style (20 in 1 puzzle)
Here is another of our unique Butterfly Samurai puzzles! It consists of 20 (twenty) classic 9×9 Sudoku sub-puzzles. There are 5 groups of 4 sub-puzzles. Each group of 4 is arranged Butterfly-style, and those 5 groups are arranged Samurai-style. Please…
Consecutive TwoDoku X
To be honest, I haven’t kept track of all the different sudoku variants that I have posted and which ones I never posted, but I think that this is the first Consecutive TwoDoku X sudoku puzzle ever. I will check…
“Greater/Less Than” Samurai Sudoku!
I have only posted one puzzle of this kind so far and here is a new one – “” puzzle in Samurai layout! No given numbers to begin with, instead, there are greater than and less than signs all over…
Extra special – Butterfly Killer Sudoku (hard)
Somehow butterfly puzzles have been neglected in the past few months and it’s time to rectify. A quick reminder – this breed of overlapping sudoku puzzles was suggested by udosuk and implemented by myself. There are 4 “classic” 9×9 Killer…
I’m back!
Sorry folks, I know that the site hasn’t been updated in the past 10 days (except for the Daily Killer Sudoku) and I apologize for that. I had to go on a trip and had absolutely no web access there!…