Sudoku is a puzzle game that is available on many websites offering free game play. Some of the sites like Real Arcade offer free Sudoku downloaded puzzles that are available for a trial basis only, and therefore are free only for a limited amount of time. There are many games that you can download and there are many flash games on this page.

At sites like Sudoku Live, you will register so that your scores are kept for comparison with later puzzles, however the games are free and you can play as long and as much as you want. There are thousands of puzzles available online at these sites and at some sites you can choose certain puzzles to play over and over until you have the game figured out.

With some of these online sites they will be offering downloads and some will be played using flash programs. Some game areas will have chat so players can speak to people they know such as the ones that are affiliated with Facebook. You will find these many free game companies will let you log in and retain your highest score for comparing with later games with your user name, but the play will continue to be at no cost.

Sudoku is a game of logic. Online it is played on a series of grids. Many players can become addicted to the game as they tend to challenge themselves t o complete puzzle faster than their previous times and beating a personal best. Sometimes it is just time to increase to a more difficult level of puzzles.

There is no math involved. It is a game of simply placing a series of numbers in the correct spot so that they are not duplicated in the bigger grid. It is a game that consists of filling in the 3x3 grid one box at a time ending with all 9 3x3 boxes with the number 1 through 9 without repeating a number in any row, grid or column.

On the easiest game levels, there will be set numbers in place that will be used as a guide for the grid. These numbers are not movable and they can not be repeated in any direction. From there you will complete the filling out the grids one box and one number and line at a time. Some of the sites will show you when you have played an incorrect number so that you are able to make a correction. As your ability and levels progress there will be less pre-existing numbers in the grid.