The Home of Perfect Sudoku and other puzzles
Killer Sudoku and variants thereof, including Zero Killer, Killer Samurai Sudoku, Killer Flower Sudoku and more. Solving techniques for Killer Sudoku also explained here. Killer Sudoku books.
Remember the TriDoku puzzles? Here is a new one. It’s a second one in Killer format, give it a try! Killer TriDoku puzzles: all standard rules of Killer Sudoku apply + of course the TriDoku rules. TriDoku Killer Sudoku for…
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.…
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…
It’s been a while since I last posted a Killer Sudoku variation. As far as I can remember, you folks liked the Butterfly layout of the puzzles, so here is an overlapping, 4-in-1 (Gattai-4), Killer Butterfly Sudoku puzzles. You can…
As you may have noticed, I’ve changed things a little on the site, by removing some of the daily puzzles. While Daily Killer Sudoku and Daily Sudoku variation will remain, as well as bi-Weekly Samurai Sudoku, all other puzzles will…
Sorry folks for this glitch and for missing out on the yesterday’s puzzle. I’ve updated both the Daily Killer Sudoku and the Daily Sudoku variation pages with new puzzles. Everything is back to normal now. 🙂
Here is very difficult Killer Sudoku puzzle. There are two Zero Killer Sudoku puzzles overlapping each other in the TwoDoku format. The difficulty is rated IQ. What do you think? Zero Killer Twodoku for Saturday, September 20, 2008
Well, I bet most of you are using Facebook, so I thought it would be a good idea to create a group there for fans of Killer Sudoku and related puzzles. I’m not sure yet what it will be used…
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…
Djape has kindly granted me my own corner as well, which I will use to present my own hand-designed Saturday Specials. We’ll start things off with a big one. Samurai: This puzzle consists of 5 overlapping grids, which on their own…