Odd Even Sudoku
Merry Christmas to all who celebrate this day! 🙂 As a small gift for you, I’ve prepared an odd-even sudoku variation puzzle. It’s not the first odd even puzzle I ever posted, but it is the first plain odd even…
Tag: INSANE
Insane Killer Sudoku – by Daniel Skillin
Today we have an extra special puzzle – a Killer Sudoku puzzle by a guest author. It’s been a while since I last posted such a puzzle. I really appreciate the enthusiasm of the visitors to my site and your…
Why do I make puzzles? A brief history of Djape.net
A short answer to that question would be: because I enjoy doing it! … but here is a long version, too. Back in the summer of 2005 I realized that it’s about time I had my own website. At that…
The June newsletter – INSANE Killer Sudoku puzzle
This is the insane puzzle I tried sending in June. It seems like it didn’t work. Here it is instead. It’s been a while, hasn’t it? 🙂 I can’t remember when was the last time I posted an INSANE Killer…
Newsletter problem? Or not?
Yesterday I sent out a newsletter with an INSANE killer sudoku puzzle. However, many e-mails bounced back, so I’m wondering if any of you received it or not? I moved the website to another server recently, so this could be…
Saturday Special: Anti-King Killer Sudoku
Here’s another Anti-Chess sample puzzle: this one’s a bit harder than the last one. This one’s a HARD (4/5…BRAIN/IQ) Anti-King Killer (this puzzle was originally classified insane, but is actually easier than the insane puzzles in the book) Anti-King means…
Slitherlink
Here is my second Slitherlink puzzle. My solver thinks it’s rather difficult. What do you think? You can read The rules of Slitherlink (Takegaki, loop-the-loop, loopies…). Slitherlink 11×11 for Monday, March 4, 2010. Difficulty: INSANE? Enjoy and do comment, please!…
Daily Kendoku (CanCan, SquareWisdom) #9
Here is another Kendoku puzzle where some cells do not belong to any cage. And incidentally, it’s my first INSANE Kendoku, although I don’t think it’s so mad as some of my killers have been. 🙂 8×8 no-cages Kendoku for…
Saturday Special – Killer ACAN Square
The two anti-chess variants anti-knight and anti-camel cannot both exist on a sudoku grid with the standard 3×3 nonets, so I’ve removed the nonets!  In chess, a knight moves 2 cells horizontally and 1 cell vertically or vise versa. Since this puzzle…
Saturday Special – Extra Groups Kakuro
Rules: Solve the puzzle so that the numbers in every horizontal and vertical region add up to the sum indicated for that region. Numbers CAN NOT be repeated in any region. Additional Rule: The yellow groups of 3×3 blocks contain…