Navigation: Mouse
Description: As with Sudoku the objective of Killer Sudoku is to fill the grid with the numbers 1 to 9 such that each row, column and box contains each
number only once. Additionally a Killer Sudoku grid is divided into cages. The values of the cells in a cage must sum up to the total for
that cage shown in the cages top left corner. The same number cannot appear in a cage more than once.