Sudoku on the Web

" Fill in the grid so that every row,every column, and every 3x3 boxcontains the digits 1 through 9. " That's all there is to it. There's no math involved.The grid has numbers, butnothing has to add up to anything else.You solve the puzzle with reasoning and logic.
It's fun. It's challenging. It's addictive! Solving time is typicallyfrom 10 to 30 minutes,depending on your skill and experience."

This is a real addiction in my house.

Check on it here:

http://www.sudoku.com/

or here:

http://www.websudoku.com/

and here:

http://www.daily-sudoku.com/soduko.php