The Home of Perfect Sudoku and other puzzles
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…
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…
Here is another Kakuro variant: Consecutive Kakuro puzzle!