I always loved playing sudoku in the newspapers, here is a simple online version for you to play for free. You don't have to wait for next day to solve a new sudoku puzzle now :)
Instructions for Sudoku Game:
The game is the classic sudoku game with 9*9 squares. The objective is to fill in all the squares such that, there are distinct numbers from 1 to 9 along each row, each collumn and also in each 3*3 box.
First select the difficulty and then click on generate puzzle to generate a new puzzle of the chosen difficulty.
Once you have solved a puzzle, to evaluvate the puzzle, click submit.
If you are tired solving the puzzle then you may want the computer to solve the puzzle for you, click solve.
At any point of time, if you want to clear up the boxes marked by you and the computer, click Restart.
In case you don't know much about sudoku read on...
Sudoku is a logic-based number-placement puzzle. The objective is to fill a 9×9 grid so that each column, each row, and each of the nine 3×3 boxes (also called blocks or regions) contains the digits from 1 to 9 only one time each. The puzzle setter provides a partially completed grid.
Completed puzzles are usually a type of Latin square with an additional constraint on the contents of individual regions. Leonhard Euler is sometimes incorrectly cited as the source of the puzzle, based on his related work with Latin squares.
The modern puzzle was invented by an American architect, Howard Garns, in 1979 and published by Dell Magazines under the name "Numbers in Place."
It was popularized in 1986 by the Japanese puzzle company Nikoli, under the name Sudoku, meaning single number.
It became an international hit in 2005.