Sudoku

Fishing around for story ideas Friday night, I landed up at BBC's website, and they had a story on Sudoku. It's a fill in the blanks type puzzle. You're given a 9 * 9 matrix, subdivided into 3 *3 matrices. The idea is to fill in numbers from 1-9 so that each row, each column, and submatrix contains all numbers from 1-9 once.

Apparently it's a rage in UK, and playing around with it for the last half hour, it's easy to see why. Check out their website at [url]http://sudoku.com[/url]