Sudoku (Board Game)

Sudoku is a simple, but wonderfully clever logic game
The rules of Sudoku are easy to learn and the challenge, enjoyment and complexity of thought… endless!!! Sudoku is a puzzle of numbers.
Sudoku stimulates all the nerves of logic and reason in the brain, but does not require any mathematical skill whatsoever
The board is comprised of 81 cells divided into 9 boxes.
At the beginning of each game there several numbers on the board. The object of the game is to fill in the missing numbers so that in each column, each row and each region, all of the numbers from 1 through 9 will appear only once.