"Do you Sudoku yet?" Most people have heard of these puzzles since they are the "hottest thing to hit North America since the best speed cubes - and they're just as addictive!" They were first published in newspapers, but now can be found in 'book' form as well as online. Many sites now offer free printable Sudoku puzzles and solutions. There are several sites from which to choose and the puzzle difficulty ranges are "Easy, Medium or Hard". There are free printable Sudoku puzzles for children as well as adults.

What is Sudoku? It is a logical kind of Japanese puzzle. The rules of this mathematical game are simple. best speed cubes The object of the game is to place a digit from 1 to 9 in each empty cell so that every column, every row, and every 3x3 box contains the digits 1 to 9 (without repeating). Obviously, you start out with some of the cells already completed. There is only one solution for each puzzle.

If the 'regular' Sudoku puzzle isn't challenging enough for you, Giant Sudoku or Big Sudoku might be of interest.

If you prefer working with letters rather than numbers, Giant Sudoku might be a good version of this game for you. The object of the game is to fill each empty cell so that each row, each column, and every 5x5 box contains the letters A-Y.

Now, if you like working with numbers and letters, then Big Sudoku is your game! The object of this version of Sudoku is to fill each empty cell so that every column, every row and every 4x4 box contains the digits 0-9 and the letters A-F. There are free printable Sudoku puzzles available for both Big Sudoku and Giant Sudoku.

If you crave something extremely challenging, then Magic Sudoku might be for you. It is a variation of the original Sudoku. There are some new rules/restrictions in this version of Sudoku. Just as in the original Sudoku, the cells contain the numbers 1 to 9 without repetition. However, with Magic Sudoku, this concept applies to the diagonal instead of top to bottom and across. Each "Quadrant" has only a number. Also, each game has special rows that are colored. The value of the numbers in these cells is lower or equal "as the number of colored cells in every quadrant".

There are also free printable Sudoku puzzles available for children. These Sudoku puzzles have at least two levels. Level One puzzles require that a number between 1 and 4 be placed in each empty cell so that every row, every column and every 2x2 box contains all of the numbers from 1 to 4. For the Level Two puzzles, the numbers 1 to 6 are placed in each empty cell so that every row, every column and every 2x3 box contains all of the numbers from 1 to 6.

Some of the online sites will send free printable Sudoku puzzles daily or weekly via e-mail. The site may ask simply for your e-mail address or they may ask also for your name, country and the number of puzzles you would like sent to your e-mail address.

There are literally thousands of available online. Just put the keyword "free printable Sudoku puzzles" into your search engine and watch the results come back. Then, have fun printing and playing!