Recognizing n applying 4x4 orient+perm parity?

[Harris Chan]

Since the algo the algo to swap 2 edges and orient one of them is (Rr)2 B2 (Rr)' U2 (Rr)' U2 B2 (Rr)' B2 (Rr) B2 (Rr)' B2 (Rr2) B2 (from bigcubes.com), and it messes up the orientation. So that means it should be done before you do the OLL? So how can I recognize a perm-parity (along with the orientation parity that is more obvious) during OLL? Because right now I have to do...

orientation parity algo->OLL->Perm Parity algo->PLL

Edit: http://z12.invisionfree.com/rubiks/index.php?showtopic=845
http://games.groups.yahoo.com/group/speeds...e/message/35548 I have to check this out when I get home XD

Thanks

Harris

(I've just recieved the eastsheen 2x2,4x4,5x5 yesterday and I've been hooked to it. My avg is around 2 minutes 40 seconds (due to a rather clumsy 3x3 final solve, where it's really hard to only move the outta face))

 

[ExoCorsair]

Chris Hardwick has a nice page on fixing orientation and OLL simultaneously (http://www.speedcubing.com/chris/4speedsolve3.html)... For some cases...

 

[Dirk BerGuRK]

If you use a reduction method (centers, edges, 3x3x3) then the only use for a PLL and OLL parity fix would be if it was faster to perform than than another parity fix. Please correct me if I'm wrong. However, I have found an alg like this to be useful when I direct solve a 4x4 or 5x5.

 

[Harris Chan]

ok I just understood it yesterday: Use the OLL+PLL parity fix algo during the OLL, since it is faster than the pure OLL fix. The chance of getting parity is still 50/50. Now my avg is sub 2

Is it just me or the eastsheen 5x5 is just wayy too small?

 

[ExoCorsair]

Originally posted by Harris Chan@Jun 14 2007, 07:23 PM
ok I just understood it yesterday: Use the OLL+PLL parity fix algo during the OLL, since it is faster than the pure OLL fix. The chance of getting parity is still 50/50. Now my avg is sub 2

Is it just me or the eastsheen 5x5 is just wayy too small?

Not just you, it's smaller than a Rubik's Revenge!

 

[Erik]

It's not too small, the rubik's one is too big :lol:

 

[Rama]

Originally posted by Erik@Jun 15 2007, 08:59 AM
It's not too small, the rubik's one is too big :lol:

I love the Rubik's one, but you will need VERY VERY strong hands for them, I switched to Eastheen again... alltough I think they are really crap.

 

[KJiptner]

Originally posted by Rama@Jun 15 2007, 12:13 PM

I love the Rubik's one, but you will need VERY VERY strong hands for them, I switched to Eastheen again... alltough I think they are really crap.

:blink:

 

[pjk]

Harris, how are your 4x4 times now? How about 5x5?