A simple Sudoku solver; it can only solve simple puzzles that do not require any trial-n-error. This version is not meant to be played, although you can do so. It is more for checking if the solution can be derived logically.
Set the correct board size first.
Select Configure, and enter all the fixed numbers.
Select Play to start playing. All the previous numbers will become bolded and read-only.
Hint shows the allowed numbers. Move the pointer over the cells for the tooltip to show up.
Auto-fill fills in cells with unique answer. The cells are colored in green.
There is absolutely no error checking, so watch your input!
(void *) &NHY;
