Sudoku is a simple, addictive game of logic that has taken the world by storm! Use reasoning and patience to solve the number grid, without the need for luck or guesswork. Whether you call it Sudoku, Su Doku, or simply Number Place, the rules of the game are simple: Fill in the grid so that every row, column and 3x3 box contains each of the digits 1-9 only once. Sound simple enough? Give it a try, and Sudoku XP will have you hooked in no time!