Date: 31 July 1980 1413-EDT (Thursday) From: Sandeep.Johar at CMU-10A Subject: cube group theory. To: cube-lovers at mit-mc Message-ID: <31Jul80 141352 SJ61@CMU-10A> In one of the previous letters on the subject of cubing there was a letter from some one offering to put together a piece on group theory and cubing, I for one would certainly be interested in seeing it. When I took my cube apart and tried to put it together I wondered as to how many ways there are of putting it together so that the cube is unsolvable, i.e. how many equivalence classes are there which are 'wrong'. Any one worked it out, I would but group theory is unfortunately not my strongest subject. Sandeep