--- In [email protected], d_funny007 <[EMAIL PROTECTED]
..> wrote:
> 
> Call your starting state A. Then what a program does is find an 
> optimal A^(-1). Say f(x) = x^(-1), but optimally so.
> 
> So now say we have a goal state B. Then f(B^(-1)*A) should do the 
> trick.
> 
> Thus I assert that all that needs to be done is to have a pre-parser 
> that takes A and B and passes B^(-1)*A into the program.

Let start state algorithm A = R' F R B' R' F' R B
Let goal state algorithm B = F U R U' R' F'

Then B^(-1)*A is:
F R U R' U' F' - R' F R B' R' F' R B

A solution the program (ignoring permutation of
course, since Chris was interested in OLLs) might
find this: F U R U' R' F'

Now apply A to a solved cube and then the alg the
program found, you will not reach the goal state.

Where's the mistake?

Btw, somebody once showed me this OLL alg:
R U R B' R' B U' R'
Do that starting with a solved cube. I immediately
replied "hey I know a 6-turn alg for that case so
if I use the inverse of that I'll have a 6-turner
for the same case you showed me an 8-turner for".

Cheers!
Stefan






------------------------ Yahoo! Groups Sponsor --------------------~--> 
Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page
http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/MXMplB/TM
--------------------------------------------------------------------~-> 

 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/speedsolvingrubikscube/

<*> To unsubscribe from this group, send an email to:
    [EMAIL PROTECTED]

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/
 


Reply via email to