Twixt puzzles by Alex Randolph

Does anybody know what happened to the game designer (Alex Randolph) Twixt puzzles that used to be at this URL:

http://www.gamerz.net/pbmserv/Twixt/puzzles.html

I found them very handy for learning and would point them out to others but seems to be a dead link now.

The puzzles are still available on gamerz, and I will post the link later. You might prefer, however, an interactive version created by our own Alan Hensel.

http://www.ibiblio.org/twixtpuzzles/

This includes puzzles by Alan.