Hi guys!
After some polishing the updated Grayout program is completed. Now always solvable becuase the available number of steps are given by a new non optimized algorithm. In most cases you can probably beat that algorithm. I hope this will be the final version but one never knows what new issues may come up.
The Linux (Debian) version can be downloaded from:
https://www.jonax.se/downloads.php
And below is the animated gif. Thanks to SilverWarior for help.
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