There are several Sudoku solvers.
I wanted to program a Sudoku solver myself.
I was not interested in the solution, but the program had to show me how to solve a Sudoku.
I finally succeeded. But then I discovered the Andrew Stuart site.
Although I could also solve these difficult Sudokus, it was a lot of work.
So I programmed further to make this simpler.
After much testing and programming, the program is ready.
Adrew thanks for your difficult Sudoku's.
I make the program available for anyone who wants it. It is Free-Ware. (Sudoku help Version 6.1)
It can be downloaded from my OneDrive.
It only works under Windows. because the program is new, some virus scanners will not recognize this.
If you scan it with Virus Total on the web you can see that it is safe.
Below the link:
http://1drv.ms/f/s!AqqUaBdOy4dli1_qv5pnup-l7DUz
Greetings:
Frans