Welcome to our website. At this page you will find: Puzzle Page Killer Sudoku Answers and Cheats. Let me explain how to play Killer Sudoku. As with regular Sudoku, the objective of the puzzle is to fill the grid with the numbers 1-9 so that each row, column and nonet(3×3 group of square) contains each number exactly once. Instead of prefilled squares acting as a clues, the Killer Sudoku grid is divided into irregularly shaped sections ( called cages). Each cage contains a clue number in the corner of one of its squares: this number indicates the sum total of the numbers that should be entered in the cage’s squares. A completed cage must not contain any single number more then once.