NY Times Touchscreen Sudoku

A 9x9 grid sectioned into 9 3x3 grid. All you have to do is fill each 3x3 grid with the numbers 1 to 9 - making sure that every row and column of the 9x9 grid is filled with the numbers 1 to 9 only once. Unless I wrote this upside down, the concept is really quite simple. So, where is the challenge? Well, first off, you get a 9x9 grid that has already been filled with some numbers. The challenge is getting your head around these numbers to figure out the one and only combination that will satisfy the grid. This is when it gets tricky. This is when it also gets addictive... really addictive... That is where this handheld sudoku gizmo comes in. Sudoku on the go - to feed your cranial need to do "just one more" sudoku puzzle before getting on with life. A suitable companion when riding on public transports getting to and fro from your destination. It works kinda like a PDA (you know, Palm, iPaq etc...). There is a nice stylus which you use on a touchscreen. Includes over 800 puzzles by New York Times' Will Shotz. Other features include the ability to choose difficulty levels - easy, medium & hard; the ability to save your game and continue later; a nice little hint function when you get really stuck and feel like introducing your puzzle to the nearest wall and a nice little ergonomic design just so that you feel that it was worth the money spent. Sudoku - anytime, anywhere - I gotta have one!