Sudoku junkies: enjoy endless hours of entertainment with the Spectra SD-10 Sudoku Number Game! Perfect for long plane rides or public transit commutes, this handheld, electronic Sudoku device contains thousands of computer-generated puzzles in three different skill levels. Filling out the puzzle is simple with a touchscreen display and stylus pointer.Stuck on the Sudoku puzzle in today s newspaper? The SD-10 is perfect for that, too! Enter the puzzle numbers into Solver mode and it can figure it out for you ( cheater!).Get your numbers fix with the Spectra Handheld Sudoku Number Game. Order today!