Free Sudoku Game Downloads
BlackDog's Free Sudoku Maker

Play this cool sudoku game on line or create a game to print out and and play later.  You can also use this tool to solve other sudoku puzzles!  To begin, right click on one of the squares below to bring up the menu.  Then select "Create a Sudoku" to start the game.  Click here for the terms of use, detailed playing help and some useful tips for printing the games you create.  (Note:  The games will not print from Firefox's web browser.  So, if you are a Firefox user, you will have to use Microsoft's Internet Explorer to print your games.)

Ihr Browser unterstützt kein Java!

Click here for the printable version

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Printing Tips and Terms of Use

Caution:  This game will not print properly in Firefox v. 3.9.  It will print properly with Microsoft's Internet Explorer.  Sorry Firefox users!

Click here for a printable version of this fun Sudoku game.  When the page has finished loading in your web browser, right click and create a game.  From the top left corner of your web browser, click "File" then "Print."  Or, follow your web browser's directions on how to print a web page.  Make sure your printer is turned on and has some regular size typing paper ready.    If you don't want to print out all the extras at the bottom of the page the coloring book page is on, print only the first page.

Print out as many Sudoku games as you want - they're free for private, non-commercial or educational use.  Homeschoolers enjoy!

By default web browsers will add the date, page number and URL to any page printed from the Internet.  For most (if not all) of the printables on this site, you probably don't want that extra text at the top and bottom of the page.  Luckily it's pretty easy to fix.  Click here for instructions on how to remove the page information from your printables.

Game Instructions

The fun Sudoku game can generate and solve Sudoku problems. There is a popup menu, which is opened by using the right mouse button.  Right click with your mouse to click on the Sudoku fields and select the current position, or to activate the items on the top row of the applet.

Create a Sudoku Problem

From the popup menu, choose to create a Sudoku. The program will create a Sudoku problem with a unique solution and standard difficulty. You may also create a symmetric Sudoku. See below for more information on the algorithm used.

Moreover, you can create a specific Sudoku in two ways. You can enter a string into the command line below the Sudoku fields, and press enter. This string will be used as a seed for the random generator. A unique Sudoku will be created for each string. Or you can enter or paste a string with exactly 81 characters into the line. The characters in your string will set the Sudoku line by line. 1 to 9 are interpreted as Sudoku numbers, all other characters as empty places. If you create any Sudoku, the input line will contain the 81 characters for this Sudoku with "." for the empty places.

Solving a Sudoku Problem

To solve a Sudoku, you enter the numbers 1-9 into the Sudoku fields. Click with the mouse on any field to activate it. Then press any of the numbers 1 to 9 on the keyboard, or double click on the numbers 1-9. To clear a position, press 0 or space, or use the 0 item in the row of icons.

You can undo your entries with the backspace key or the - item. Moreover, you can mark the active position in red with the "M". Together with the backspace key, this allows for trial and error solving. However, a good puzzle can be solved without far reaching trial and error.

To assist you in solving, you can highlight all 1s, 2s etc. Click on the items in the top row of the applet to switch highlighting on or off.

If you are stuck, you can let the program solve the Sudoku for you. Just use the menu entry in the popup menu.

Setup a Sudoku Problem

To enter a problem from the newspaper, start the setup mode with the popup menu. Then, enter the numbers with the keys 1 to 9, delete numbers with 0. You can move from field to field with the cursor keys.

After you have finished entering, exit the setup mode. The non-empty cells will be protected, and have a slightly darker color.

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