Select a puzzle difficulty and then play. To fill in a cell just touch
it. You'll know if you have made a mistake.
If you slip, you can touch the cell again to blank it.
This Sudoku puzzle has a minimal user interface designed for iPhones, but easily playable on any conceivable WWW device.
The puzzles are generated with qqwing.
This sudoku is brought to you by Lunarware. You can send comments to webserf@sudoku.lunarware.com