Thank you for your great website, I'm using it to generate excercises a lot.
It just happens that the "Mystery of the bead" website has been moved to http://webhome.idirect.com/~totton/abacu...
Please update your links from http://abacus.etherwork.net/pages.htm#So... to the address above.
Thanks a lot.
OK. It's done.
Thank you to visit.