Here you will find: Puzzle Page Killer Sudoku February 1 2020 Answers. 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 mire then once.