Killer Sudoku Links
Killer Sudoku Rules
First, you might be wondering why the puzzle has such a dramatic name 'killer' sudoku? Well, the reason is simply that they are generally harder to solve than normal sudoku. This is because you start with less givens, in fact normally zero, so have all 81 cells to place values in rather than having a helping hand like with normal sudoku.
In addition the puzzle involves maths and sometimes quite complicated solving rules - so you'll need to have your wits about you to solve quite a few different killer sudoku puzzles.
The Rules of the GameThe rules are as follows for 9x9 puzzles, which is the most commonly seen size for this puzzle as with sudoku. Of course with other sized puzzles these are simply to be replaced with the relevant dimensions, so for a 6x6 puzzle use 1 - 6 and 3x2 boxes (or indeed 2x3 depending on their shape):
So that's it for the instructions - and generally a killer sudoku will have no givens either - now click the links in the menu to look at solving strategies, variants of killer sudoku or to start playing puzzles right away.