Bigcube tips and tricks discussion thread

Get a solved 5x5x5 do these moves with white on top, green on front: Rw2 U' Rw B' Rw' Lw' B Lw x'

Let's say you want to solve the white centres.

To do this you could do Lw' U' Lw and then you will get a "fish shape" where you'll be an insert away from finishing a 2x3 block of centres. Next you just simply do Rw U Rw' and a 2x3 block of centres will be made.
Doesn't work :(

It does work.
 
5x5x5 last 3 tredges trick(s):

On a solved 5x5x5, do any Uw move and Dw move, flip the FR tredge around, undo the Uw and Dw moves and see what it does :)

man I love you! :D I've always did it like Rw'U'RURw B2 x'z'Dw2 RUR'FR'F'RDw2 (ollpar edge on UR, bad wings at UBr and UFr) but this one seems nicer!
 
I might have a better way of thinking about it:

Group the edge from the ollparity tredge (anyone have a better name for this?) with the 2 bad wings (the ones next to a half-solved tredge), flip the tredge with bad pieces around, restore centres.

Uw Dw (FR tredge flip) Uw' Dw'
Uw Dw2 (FR tredge flip) Uw' Dw2
Uw2 Dw (FR tredge flip) Uw2 Dw'
Uw2 Dw' (FR tredge flip) Uw2 Dw
Uw' Dw2 (FR tredge flip) Uw Dw2
Uw' Dw' (FR tredge flip) Uw Dw

They all do the same thing except the bad wings are in different positions.
 
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e (FR tredge flip) e'

With e being a single slice, is kind of uncommon but still extremely useful.

I also sometimes chain things together like

m' U R U' 3L U' R U R' F R' F' Lw'

Rob can you make a list somewhere with all of your algs/tricks? I basically use a watered-down version of your edges and think I have a lot to learn from you.
 
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e (FR tredge flip) e'

With e being a single slice, is kind of uncommon but still extremely useful.

I also sometimes chain things together like

m' U R U' 3L U' R U R' F R' F' Lw'

Rob can you make a list somewhere with all of your algs/tricks? I basically use a watered-down version of your edges and think I have a lot to learn from you.

I think I might have listed all of my tricks in this thread :p

I still haven't made tutorial for my 5x5x5 edges method. But that's good, because I've made some small changes. I've simplified it a bit (in my head...) in order to get better times. I'm still not completely satisfied with my method. Right now, it's a lot like AVG with a lot of "special cases". It's not completely flawless yet :)
 
I would like to see just some 5x5 solves, not a tutorial yet. I like trying to figure out what they do, and seeing how close my guess is and what I missed. I find it to be a good observation excersise.
 
4x4x4 LL:

E perm + PLL parity:

Using Maarten's idea for the two diagonal corners swap, I just found this really nice alg:

F R U' R' U' R U R' F' R r2 U2 r2 Uw2 r2 Uw2 U' R' U' R' F R F'

Now to find an alg for the other E perm + PLL parity case...
 
4x4x4 LL:

E perm + PLL parity:

Using Maarten's idea for the two diagonal corners swap, I just found this really nice alg:

F R U' R' U' R U R' F' R r2 U2 r2 Uw2 r2 Uw2 U' R' U' R' F R F'

Now to find an alg for the other E perm + PLL parity case...

Wow, that's brilliant! I hate that parity PLL!

Another 2 using T perm:

R U R' U' R' F R2 U' R' (PLL parity) U R U R' F

R U R' U' (PLL parity) U2 R' F R2 U' R' U' R U R' F

In fact, that idea seems to be useful for any PLL alg that has two LL edges opposite each other on the U layer with the same orientation at some point in the alg. T, Y, Js and Rs spring to mind immediately, I'm sure there are more.
Perhaps this one look 2 alg PLL is better than 2 look 2 algs? At least for the worst cases like the one you just made I think it is...
 
4x4x4 LL:

E perm + PLL parity:

Using Maarten's idea for the two diagonal corners swap, I just found this really nice alg:

F R U' R' U' R U R' F' R r2 U2 r2 Uw2 r2 Uw2 U' R' U' R' F R F'

Now to find an alg for the other E perm + PLL parity case...

Wow, that's brilliant! I hate that parity PLL!

Another 2 using T perm:

R U R' U' R' F R2 U' R' (PLL parity) U R U R' F

R U R' U' (PLL parity) U2 R' F R2 U' R' U' R U R' F

In fact, that idea seems to be useful for any PLL alg that has two LL edges opposite each other on the U layer with the same orientation at some point in the alg. T, Y, Js and Rs spring to mind immediately, I'm sure there are more.
Perhaps this one look 2 alg PLL is better than 2 look 2 algs? At least for the worst cases like the one you just made I think it is...

Yeah this idea is really helpful!

I figured out that for the other E perm + PLL case, you could somehow use a V perm to find a good algorithm. However with the most common V perm algs, the other two edges are never in line with each other in a convenient position, whilst the algorithm is being executed; so there isn't really a good time for executing the PLL parity algorithm with the most common V perms...

and btw: R U R' U (PLL parity) R' F R2 U' R' U' R U R' F is better :)
 
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Well I just found my own V perm (19 moves :s) using two OLL algs. Then I used this somehow to find an alg for the other E perm + PLL parity case:

R' U' R U' r2 U2 r2 Uw2 r2 Uw2 R' F R U R' U' R' F' R' U' L' U R' U' L

meh...

EDIT: :fp

http://frederickbadie.free.fr/444PLLparity.html

The algorithms on that page for both E perm + PLL parity cases for so much faster and shorter than what I've found so far....
 
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4x4x4 last two centres:


1. Set up: Rw U2 Rw' U F

Instead of doing:

a. F' U' (or U' F'), Rw U2 Rw' (or Lw F2' Lw')
OR
b. F U (or U F), Rw' F2 Rw (or Lw' U2 Lw)

You could do:

a. Lw' U' Lw Rw U Rw'
or
b. Rw U Rw' Lw' U' Lw


2. Set up: Rw U2 Rw' U' F'

Instead of doing:

a. F' U' (or U' F'), Rw' F2 Rw (or Lw' U2 Lw)
OR
b. F U (or U F), Rw U2 Rw' (or Lw F2' Lw)

You could do one of the following "algorithms":

a. Rw U' Rw2' F Rw
b. Rw' F Rw2 U' Rw'
c. Lw' U Lw2 F' Lw'
d. Lw F' Lw2' U Lw


I think I learnt this from Chris Hardwick from somewhere...
 
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