Someone has been updating
Ruud's site. Presumably it's Ruud himself. On the menu bar of the site, there are new icons for jigsaw and hanidoku. New sets of several types of puzzles, and an updated version (15 September 2018) of his HaniCue program. The forum is back up, and I can log in, but attempting to post gives me an error that seems to be a break in the software rather than an intentional disabling of posting. This is definitely an interesting development!