Cudoku v1.0

Description:
CUDOKU is a simple Sudoku solver, creator and teacher.

It can be used to create and print Sudoku puzzles. Game board in any stage can be printed or saved into a vector format file. You may solve puzzle generated by program, or created manually. Three hint levels are available. Beginners may learn following the hints, and advanced players may use program with no hints, only as a virtual board, for solving puzzles from newspapers and magazines.

Rules
Every digit from 1 to 9 should appear only once in every row, column and square 3x3 fields. At start you wiil see some digits in place. Game ends when you fill entire board, according to above rule. That is all!

Playing
To begin choose game level (lame, beginner, advanced or wizard) and press New game button. You will see randomly generated puzzle. To put number in empty field, click on small green digit. Status box at the top shows moves remaining to game end. To undo last move, click on Back button.

Static puzzle numbers are black, placed by player are blue. Clicking on X removes them. Small number from 1 to 9 can be green, black or light grey - try to click several times on them with right mouse button. These colors don't have any meaning to program. They are only for player - you can check which numbers you plan to put in the field, and which not.

Hint
There are three hint level available.
Level 0: No hints. All possibilities are available.
Level 1: Only numbers absent in row, column and square are displayed to click on them.
Level 2: Program performs more complex board analysis and eliminates more numbers than in level 1.
Highlight lonely numbers: This option is available in levels 1 and 2.
Error: Sometimes, in level 1 or 2, you will see empty, pink squares. This means that there is no number to put in. You should press Back and try another move.


Creating your own puzzles
You can create your own puzzles or put in those found in magazines and other places. To do it, simply press Clear all button and fill board with desired numbers. Then press Lock button, and all numbers will turn black, just like after New game selecting. From now you can start to play.

Hint: When you are creating own puzzle starting with empty board, set Hint level to 2 and check Higlight lonely numbers option. Then fill board with numbers, until you see all empty fields with only one possible number, like below. This means, that puzzle contains no errors and has only one solution. Then lock it, choose desired hint level and start to play.


Printing
To print puzzle board, simply press Print button.


More information:
http://cudoku.com/

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