I would love to give an out of parity Rubix Cube to one of those Rubix Cube
savants and see how long it taked to figure out they cannot solve it! ;-P
Bob S
> On Mar 7, 2018, at 08:22 , Ralph DiMola via use-livecode
> wrote:
>
> I don't know about the 9 puzzle but I suspect it's like the 15 p
I don't know about the 9 puzzle but I suspect it's like the 15 puzzle. The
15 puzzle and Rubics Cube have parity. If the 15 is out of parity it can
never be solved. The same for Rubics Cube, if you say switch 2 edge pieces
or rotate 1 corner piece it's not solvable.
Ralph DiMola
IT Director
Evergr
I'm not sure whether there is an answer in terms of pieces in place/out of
place. I know that there are (I think three) different "position-spaces" where
each space is unreachable from the others.
The easy solution is to this problem is to start with the puzzle solved and
quickly execute thirt
