** Full Screen Recommended ** Fill the grid with digits so as not to repeat a digit in any row or column. Digits within each heavily outlined group of squares (called a cage) must combine to make the arithmetic result indicated. In a cage marked with a plus sign, the given number will be the sum of the digits you enter into the cage. In a cage marked with a minus sign, the number given will be the difference between the digits you enter into the cage. A single-square cage marked with a digit, just contains that digit. To enter a digit, select (click on) a digit from the "keypad" on the left. Then click on the cell to place it. To erase a digit, 1st click the bottom, blank key.
KenKen and KenDoku are trademarked names for a style of arithmetic and logic puzzle invented in 2004 by Japanese math teacher Tetsuya Miyamoto. Puzzle taken from "The Ultimate KenKen Omnibus" Mobile friendly. Four grid sizes: 3 - 3x3 grids (1-3) 4 - 4x4 grids (4-7) 5 - 5x5 grids (8-12) 6 - 6x6 grids (13-18)
