Just a quick toot to say that I am trying to add more diagrams for this type of puzzle to my Puzzles page at http://www.origamiheaven.com/puzzles.htm
So far I have added diagrams for Robert E Neale's Sheep and Goats and my own Night and Day (both derived from the same flexagon) and for my Purgatory puzzle, in which the challenge is to pass a rather large object through the centre of a flexagon-like mat. If you have any ideas for other puzzles which should be featured here please let me know. Dave
