Date: 15 Aug 1980 2347-PDT From: Stuart McLure Cracraft Subject: Undocumented position? To: cube-lovers at MIT-MC I've been attempting to use the 'method' Singmaster offers in his 5th edition pamphlet for solving my cube, and have arrived at an undocumented position. Perhaps I'm overlooking something and a cubeophile out there can offer an explanation of where I'm going wrong. I have reached the position described after step 6 just before proceeding to step 7. The bottom and top faces are one color, the center slice cubies are corrrectly colored and the upper edge cubies (the + pattern) are correctly oriented. Two of the upper adjacent corners are correctly oriented but the opposite two are not. At this point Singmaster deals with putting the rest of the U corners in their correct slots although not orienting them correctly necessarily. If we represent my U corners with 1 2 3 4 then the cubies want to be rearranged as follows 1 and 2 want to be exchanged I don't see any way of getting this operation out of the cases documented by Singmaster. What gives? -------