Most recent change of Flexatube

Edit made on January 23, 2009 by derekcouzens at 13:13:56

Deleted text in red / Inserted text in green

A flexatube is a simply made puzzle consisting of 4 squares (about 3cm x 3cm) which have been folded along the diagonals


and fixed into a tube.


By a sequence of folds the tube can be turned inside out.

There are various solutions. One can be seen at


One of the Enrichment tasks on this site.