I have recently found this mailing list and have just finished reading
through the earlier postings.
Perhaps this don't really belong to this list, but I have a list of
different puzzles that in their final state is a 3x3x3 cube. Among them are,
of course, Rubik's cube. The Soma cube and related puzzles are also there.
If you'd like a copy of the list, please MAIL me.
I also wonder if you know about other mailing lists or such which deals with
puzzles (preferrable mechanical). (I know about USENET/NEWS group rec.puzzles.)