There are lots of Sudoku games available - this is yet another...
Before starting a game, you can set three options:
- Training mode allows FreeSudoku to give you hints.
- Symmetric games are mirror-symmetrical - this looks pretty, but is otherwise irrelevant
- Consistency checking helps prevents silly mistakes, like entering impossible numbers. Some regard this as cheating...
All options are off by default.
There are five difficulty levels. These are based on the complexity of the strategies required to solve the puzzle.
The numbered buttons highlight all existing entries of a particular digit. Click the same digit again to remove the highlighting.
The source code for the program is included in the main javaprojects repository.
Originally, FreeSudoku ran as an applet using Java Web Start. This means of running programs was deprecated due to security concerns. Hence, you will need to create your own runnable JAR-file from the source code
History
FreeSudoku is a GPL-licensed program whose home was once http://freesudoku.sourceforge.net/. Unfortunately, the project was apparently abandoned. After making a number of improvements to the code, I have forked it into my Java Projects repository