The game Sudoku is a simple, but challenging puzzle. The object of the game is to fill in all of the squares in a 9x9 grid. Each row, column and 3x3 square must have the digits 1 - 9 represented. Note: Sudoku requires AvantGo 5.x or higher and a PocketPC or Palm OS5 device with at least 215-pixel-wide resolution. Sponsored by Parker.