The Home of Perfect Sudoku and other puzzles
A while ago I created a computer-generated Hanjie puzzle. I didn’t get much response from you folks, but lets try again. The rules are same as for your ordinary Hanjies. The only difference is that randomly generated Hanjie puzzles have…
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!…
This is just a reminder that tomorrow, on Sunday, February 28, 2010, my Samurai Sudoku puzzles will restart in the Comics section of The Washington Post. Also, I am pleased to announce that I’ve made a deal with Kinokuniya bookstore…
In case you didn’t see this one coming, well then… you don’t know me and should be coming to this site more often! 🙂 Killer TriDoku puzzle: all standard rules of Killer Sudoku apply + of course the TriDoku rules.…
If you can have Diagonal Sudoku or Sudoku X puzzles, why not have a TriDoku X? Although it looks more like a TriDoku *, I decided to keep the “X” in the name. Perhaps it could be called a TriDoku…
Here is another variant of Outside Sudoku puzzles: a consecutive Sudoku. I’m sure you are aware of the rules, but lets repeat that the numbers in cells that are connected by the pipe “|” symbol MUST BE CONSECUTIVE. Numbers is…
Here is a puzzle that I think deserves a lot of attention: TriDoku! It’s a great puzzle-type but for some reason it’s very rarely seen in the Sudoku world. I want to change that! Even though it may not appear…
Another kind of puzzles that I’ve started creating recently… Slitherlink! These puzzles are also known under many different names. Slitherlink puzzles are not a Sudoku variant. They can be of any size and the rules are: 1. Connect the dots…
Good news folks! 🙂 The Washington Post have decided to restart printing my Samurai Sudoku puzzles in their Comics section of the Sunday issue… thanks to YOU! Apparently the readers have been clamoring for the return of Samurais and the…
I don’t think I’ve ever posted a puzzle like this one. Yes it is essentially a Killer puzzle. Yes, it’s also an overlapping sudoku puzzle, Gattai-2 (TwoDoku). But it also has some similarity with Calcudoku puzzles, because you must use…