"A paper that Ollerenshaw published in 1980 in the Bulletin of the Institute of Mathematics and Its Applications gave one of the first general methods for solving the Rubik cube puzzle (or the Hungarian magic cube as it was often called then) that tried to minimize the total number of moves needed. The algorithm did the bottom face first, then the top corners, then the middle slice edges, and finally the top edges, producing an average of 80 moves. Ollerenshaw worked with the cube so much that she required surgery to fix her "cubist's thumb" tendinitis."