rubiks_optimal - optimal solver for 3x3x3 Rubik's cube

       A solved cube is represented as

            UF UR UB UL DF DR DB DL FR FL BR BL UFR URB UBL ULF DRF DFL DLB DBR

       where  U,D,F,B,L,R  stand  for up,down,front,back,left,right and the two-colored cubies are listed before
       the three-colored corner cubies.

       To input a scrambled cube, first give the cubie that's in the  UF  location, then the cubie  in  the   UR
       location, and so forth, according to this list above.  For example, "cube in a cube" would be

            UF UR RD RB LU LF DB DL FR UB DF BL UFR RFD RDB RBU LFU LUB DLB LDF

       This input should all be on one line.

rubiks_optimal                                      Jan 2015                                   RUBIKS_OPTIMAL(1)

       Solves a 3x3x3 Rubik's cube, entered at a prompt.

       rubiks_optimal - optimal solver for 3x3x3 Rubik's cube

rubiks_optimal