Jacck
Veteran
Nice idea. You could tell somenone (his or her eyes closed) to do 180° up-face, 180° down-face, 180° left-face, 180° right-face, 180° front-face, 180° backdown-face: he or she would have done the checkerboard blind!i thought it was a class thing.
maybe you can call people up to do some algoritms on the cube
Good luck - and be a star!