Today's Dragon Tip
Full backtrack
If you change your mind about a square allocation you can simply undo it, even if the allocation was done a few moves ago. Just use CTRL and the Z key to undo.
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If you change your mind about a square allocation you can simply undo it, even if the allocation was done a few moves ago. Just use CTRL and the Z key to undo.
Read More
Puzzle Contribution [Page 12 of 15])
If you find a particular Sudoku puzzle interesting or challenging then you can easily contribute the puzzle to our web site.
Visitors to our online forums can then comment on the puzzle with their own views and suggestions.
To contribute a puzzle all you need to do is select Contribute from Sudoku Dragon puzzle solver's File menu.
If you are really stuck on solving a puzzle, help is at hand. If you find a particular puzzle beguiling, share it with the world.
You can download SudokuDragon for a free 23 day trial. Registration for online contribution is free and easy. Go to our download page.
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