The Sodoku puzzle is a logic game using numbers 1-9. It came to western world an year ago (2005). Read the history of this game in wikipedia.org.The Rule: Every Column, Row and 3x3 box contains digits 1-9. No duplicates and no missing numbers.
Tips: Use logic and reasoning instead of guessing a number
To find out more about this, read more in my blog The Mind Games / Sodoku Puzzle
