I have an article that discusses a Rubik's cube
learning program written in GPS. I do not have
the program.
ref: A PROGRAM THAT LEARNS TO SOLVE RUBIK'S CUBE
RICHARD KORF
DEPT OF COMPUTER SCIENCE
CARNEGIE-MELLON
PITT, PA 15213
DTIS : ARPA ORDER 3597 AF AVIONICS LAB CONTRACT F33615-81-K-1539