Thanks. And ya, I meant 6^20. I thought maybe if only FBUDRL were considered valid moves, then I might be able to do it. But if the 20 total moves includes 18 different transformations then there's no way. I'll see what I can do with those tables though.
I know that any rubik's cube position can be solved in 20 moves or less, but which are the allowable moves? I'm assuming it includes FBUDRL and all of their inverses (i.e., F'B'U' etc.). What about F2B2U2...? What about fbudrl and their inverses and doubles? And what about xyz? Thanks...