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SudoKõ is the Loughborough University Final Year Project of the Author Ko Chung Wong. It is a Sudoku puzzle generator and solver for Windows 98, Windows 2000 & Windows XP, required .Net framework 2.0 to support the system.
If you do not have any idea about how to play Sudoku please have a look here.
Also, please go to the SudoKõ for more detail about the application.

The SudoKõ generates high quality puzzles that are symmetrical with a sole solution. The player can also choose between five levels of complexity.


Not only does SudoKõ make challenging puzzles, it also provides features to help player to solve them - removing the hassle but not the fun. Keeping track of possible values for blank cells (candidates), providing colour markers are just some of the tools available to make solving even those really tricky puzzles possible. Also, if you ever get really stuck, SudoKõ can get you started again with hint or go backward steps without giving away the fun.

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Author & Copyright:

Ko Chung Wong
SudoKõ version 1.24 for Windows application
Copyright © 2006, 2007


* It is free of charge for personal useage only.
* Random and manual game setup.
* Immediately indicates illegal plays when new values are entered (may be turned off).
* Multi-cell selection to aid excluding candidates
* Logical solver with log to show you how games can be logically solved.
* Filtering of candidates, almost essential to visualize advanced methods
* Game elapse time shows how long a player has been spent on a Sudoku puzzle.
* Multi-level undo (ie all the way back to the start) and redo
* Save and load puzzles, even partially completed ones
* Copy and paste puzzles to and from the clipboard
* Create images of puzzles in *.jpeg, *.gif, *.png and *.bmp - useful for copying to forums
* Extensive hints covering almost all logical solutions
* Prints blank puzzle grids, as well as partially and full completed puzzles
* Adjustable screen sizes
* Keyboard and mouse friendly.

Keyboard Basics:

The selection focus changes with the arrow keys. To select a range of cells, hold down the shift key while using the arrow keys. Individual selections can be made by holding down the control (Ctrl) key, while using the arrow keys, and the spacebar.

Mouse Basics:

Click a cell to change the selection focus to that cell.

Playing Sudoku:

SudoKõ starts with a puzzle ready to play. The playing level is initially set to Easy, but you can select harder puzzles from the File | Create New menu. You can also load previously saved puzzles by clicking the File | Open menu option or by dragging and dropping a Sudoku file onto SudoKõ . Puzzles copied into the clipboard (in text format) from Sudoku forums can also be pasted into SudoKõ.

Designing Sudoku:

If you wish to design your own puzzles, simply open the notepad, copy and paste the puzzle you found from any forums. Once you’ve finished manually entering the ‘givens’, click save and rename the extension to *.SK to start solving the puzzle. Nb: this menu option will only appear once a minimum number of ‘givens’ have been entered.

Puzzle Timer:

The timer display can be toggled on and off (Ctrl+T). However, hiding the timer won’t stop it. The only way to do that is to minimize SudoKõ to the taskbar. The timer will automatically restart once the program is restored.

Copying & Pasting Puzzles:

Puzzles are often posted for discussion in Sudoku forums and are displayed there in various text formats. These puzzles can easily be copied to the clipboard and pasted into SudoKõ . The text formats will be recognized including the following:




Puzzles can also be copied from SudoKõ to the clipboard so they can easily be pasted into a Sudoku discussion forum.

Rules and Tips:

If you need some tips on how to solve Sudoku then have a look here.


To uninstall SudoKõ , please closed the application first.
Open Window’s Control Panel and select ‘Add or Remove Programs’.
Then select SudoKõ from the list, click the ‘Remove’ button and follow the prompts.


SudoKõ has been released as freeware under GNU General Public License for private use only provided the user acknowledges that he or she is receiving this software on an "as is" basis. The user further acknowledges that any use of this software will be at the user's own risk and the copyright owner accepts no responsibility whatsoever arising from the use of the software.

Checksum Summary

For your convenience, the MD5 sum available for SudoKõ can be downloaded from here, have been gathered below.

  77EA76A475F878F6A5E883584D467380     SudokoSetup.msi  

Some studies required if you'd like to know more behind this application:
Sudoku Creation and Grading by Andrew Stuart.
Combinatorial Concepts With Sudoku I: Symmetry by Gordon Royle


Copyright © 2007
Written by Ko Chung Wong

Last modified: 9th May 2007 GMT