
This time something different.
I did sudoku solver. If you have a problem with sudoku, use this program

I used "brute force" and recursion method. But is fast (as a Gigatron).
Time of solving may be different for different combination of digits.
Usage:
Coursors - move the coursor
A button - change and put digits
B button - clear all
START button - start solving
Minium config:
32kB, ROMv5a - not tested,
On 64kB ROMv5a/v6 works very well.
Enjoy