What are the rules of Killer Sudoku?
Killer sudoku has all the rules of sudoku, and some more besides!
All the rows, columns and boxes must contain the numbers from 1 - 9 once and once only. So far, just like sudoku.
However, the grid is split up into small regions, for instance three cells may total 9. You must obey all these sub-totals for each box in your solved puzzle. And within in each of these sets of cells, you must not repeat a number.
And that's it - using these rules you should be able to deduce the solution to a valid killer sudoku puzzle!
Most popular questions in puzzle category:
What strategy tips will help me solve Killer Sudoku puzzles?
You will need to use all the strategies that you use to...
What other names is Killer Sudoku known as?
Killer sudoku has been called all sorts of...
What does Killer Sudoku mean?
The sudoku bit can be explained from the definition of...
View a list of puzzles for publication with pictures of each.
Contact us about buying puzzles
Individuals:
Play hundreds of puzzles for personal enjoyment online at the Puzzle Club
Large range of printable puzzles for personal use downloadable at Puzzle Magazine website.
Search Puzzle FAQ