On Sun, 9 Jul 2006, Fred lunnon wrote:
Another of Rubik's puzzles involved a rectangle comprising 3x2 square pieces, looped together by an elastic cord following a cyclically diagonal path in such a manner that the pieces could flip individually. I can't now recall the name; only my utter failure to model the symmetries of the wretched thing mathematically.
I believe you're referring to Rubik's Magic: https://secure.rubiks.com/lvl3/index_lvl3.cfm?lan=eng&lvl1=produc&lvl2=rubbr... Although it might also be the Rubik's Homer Simpson Head: https://secure.rubiks.com/lvl3/index_lvl3.cfm?lan=eng&lvl1=produc&lvl2=rubbr... But in case it's in fact the Rubik's Jango Fett/Clone Trooper Head, here's the (rather amusing) complete product lineup: https://secure.rubiks.com/lvl3/index_lvl3.cfm?lan=eng&lvl1=produc&lvl2=rubbr... -J