Sudoku anyone?

I just got introduced to this game, and I can see why it can be addictive! According to Wikipedia, Sudoku is the number placing game taking the world by storm. The rules of Sudoku are simple. You start with a 9 by 9 grid which comes pre-filled with a few numbers. The challenge is to fill the remainder of the grid with digits from 1 to 9. Every row must contain one of each digit. So must every column, as must every 3x3 square. Each Sudoku has a unique solution that can be reached logically without guessing. It's surprising how challenging it gets with just one rule. It took me more than 20 minutes to do my first one, and that was rated Easy!

Go to Web Sudoku for "Billions of Free Sudoku Puzzles to Play Online."