Today's Dragon Tip
To change the tentative impossibilities (numbers that can not go in a square) just press CTRL and the number you want to remove from the current square. To clear all tentative possibilities and impossibilities from the current square press the F7 key.
Download Sudoku Puzzle Solver
Download Sudoku Dragon™ puzzle solver for 23 days free trial. Sudoku Dragon shows you how to solve any standard Sudoku puzzle and generate new ones to be solved.
For a list of the Sudoku puzzle solver's capabilities please visit our features page or take an online tour to see the key features of the program in action. It has a battery of hints, guides and possibility analysis options to let you to get to grips with this alluring puzzle.
Version 5.2, May 2013. Download the Sudoku Solver ./sdkinst.exe (1.22 Mb) installer by clicking the animated button.
To use Sudoku Dragon you must have Microsoft® Windows® 7; Vista or XP installed on your PC.
For increased security we have digitally signed the installer with Silurian Software the makers of Sudoku Dragon as the publisher. You may see a message when you download or run the installer along the following lines. Just click on 'Run'.
After the free 23 day trial period you will need to buy the software. You can purchase a copy by following the purchase instructions on the License information page (from the Help menu) after installation. The price is $ 18 or £ 9 or € 12.
If you have already installed Sudoku Dragon please use the Upgrade Check from the program's Help menu. To re-install the program you will need the purchase code see our license page for details. For information on all available updates please check the Upgrade page. Sudoku Dragon has built-in facilities to support a quick and easy update or purchase without re-installation.
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