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[Help Thread] 4x4 Discussion

Discussion in 'Cubing Help & Questions' started by jackolanternsoup, Feb 17, 2008.

  1. One Wheel

    One Wheel Member

    2,006
    1,001
    Feb 24, 2016
    Wisconsin
    WCA:
    2016BAIR04
    There are upgrades available, if that's what you want to spend money on, but the Aosu is still a serviceable puzzle.
     
  2. dboeren

    dboeren Member

    188
    37
    Sep 27, 2007
    Marietta, GA
    I just upgraded from my original Aosu to an Aosu GTS M and it's massively better. Not sure about the Aosu GTS M vs. Wuque M comparison, I just got the one that was on sale :)

    If you don't want to learn Yau, you can do freeslice and learn to solve multiple edges at once, look up 323 edge pairing. Or you can do Meyer, which is basically the Roux version of Yau (it's pretty similar).
     
  3. M0r0

    M0r0 Member

    12
    1
    Mar 16, 2018
    Michigan
    So while I was waiting for a competition I bought a 4x4, but since I didn't have any WiFi I couldn't watch any videos on how to solve it. I was able to get up to PLL, but now I'm stuck.

    So I am able to get up to this point on my own.

    [​IMG]
    Anybody know how I can swap those?
     
  4. Draranor

    Draranor Member

    205
    63
    Jan 8, 2016
    Arkansas
    WCA:
    2016REIC01
    That case shouldn’t be possible. My guess is some stickers may have gotten swapped
     
  5. 1001010101001

    1001010101001 Member

    910
    156
    Dec 18, 2017
    Australia
    WCA:
    2017WENR01
    R U R’ U’ — setup
    (Take r as a slice turn)
    l’ U2 l U2 l U2 r’ U2 l U2 l’ U2 F2 l2 F2 r

    U R U’ R’

    Edit :If you don’t have wifi, how did you post this?
     
  6. xyzzy

    xyzzy Member

    1,128
    581
    Dec 24, 2015
    The exact case as in the picture is indeed impossible, but what's possible are cases like these:

    [​IMG] [​IMG] [​IMG]

    For these, the solution is as 1001010101001 mentioned: do some setup moves to bring the two pieces you want to swap to the UFr and UBr positions, do that alg, then undo the setup moves.
     
    1001010101001 likes this.
  7. M0r0

    M0r0 Member

    12
    1
    Mar 16, 2018
    Michigan
    What I was trying to say was that I didn't have WiFi when I first bought the cube and tried to solve it.
     
  8. M0r0

    M0r0 Member

    12
    1
    Mar 16, 2018
    Michigan
    Is there a name for this move?
    And where did you find it?
     
  9. bcube

    bcube Member

    193
    8
    Sep 8, 2010
    4x4x4 parity algorithms on the wiki contain a huge collection of algorithms, including l’ U2 l U2 l U2 r’ U2 l U2 l’ U2 F2 l2 F2 r.
     
    1001010101001 likes this.
  10. 1001010101001

    1001010101001 Member

    910
    156
    Dec 18, 2017
    Australia
    WCA:
    2017WENR01
    Technically the Alf that I posted is ‘true’ parity because it swaps two edges while PLL parity swaps four edges in a 2x2 cycle.
     
  11. UnknownCuber

    UnknownCuber Member

    33
    4
    Mar 14, 2018
    MAS/SING
    For pll has anyone compiled a list of algs for the remaining cases with parity?
    Thanks in advance
     
  12. Christopher Mowla

    Christopher Mowla Premium Member

    832
    10
    Sep 17, 2009
    New Orleans, LA
    YouTube:
    4EverTrying
    If you mean for PLL parity, I put quite a few algorithms for most of the 22 PLL Parity cases at the beginning of the 4x4x4 parity algorithms Wiki page. I have included all (or at least most) of the original algorithms found for these cases back at the beginning of the century.

    I am aware that there have been several videos of PLL parity tutorials featuring new (and possibly faster) algorithms for each of the cases, but I lost track of them. If someone does his or her research and figures out which algorithms for PLL parity cases which are already not in the Wiki and lists them here, I will add them to the Wiki.
     
  13. Lapis

    Lapis Member

    11
    0
    Jun 7, 2017
    Is there a nice way to solve this pll parity case?
    Set Up: (V Perm) U2 R U R' U' (PLL Parity) U' R U' R'
     
  14. xyzzy

    xyzzy Member

    1,128
    581
    Dec 24, 2015
    Just do PLL parity + E perm.

    Alternatively, Uw2 Rw2 U2 Rw2 R' D R' U' R (U2 D') R' D' R U2 R' (U' D) Rw2 Uw2, or one of the algs in the wiki page linked in the post directly above yours.
     
  15. UnknownCuber

    UnknownCuber Member

    33
    4
    Mar 14, 2018
    MAS/SING
    If I'm not wrong you can do a y perm and in the middle of the first oll (of the y perm) you can insert the pll parity.
     
  16. xyzzy

    xyzzy Member

    1,128
    581
    Dec 24, 2015
    That solves a different case.
     
  17. UnknownCuber

    UnknownCuber Member

    33
    4
    Mar 14, 2018
    MAS/SING
    Does anyone have any idea of what TPS is needed for sub 1?
     
  18. xyzzy

    xyzzy Member

    1,128
    581
    Dec 24, 2015
    A solve with Yau takes 120-160 moves, so you'd need roughly 2.4 tps to be sub-1.
     
  19. weruoaszxcvnm

    weruoaszxcvnm Member

    9
    0
    Saturday
    WCA:
    2017PRAM03
    i ever accidentally get this condition, i did oll algorithm but i realised this condition so i reversed oll algorithm before oll algorithm is done and i did oll parity 2 times

    if you get this condition :

    [​IMG]
    [​IMG]

    do oll parity algoritm 2 times with this algorithm

    (Rr)2 B2 U2 (Ll) U2 (Rr)' U2 (Rr) U2 F2 (Rr) F2 (Ll)' B2 (Rr)2

    and your 4x4 will be solved
     

    Attached Files:

  20. Brest

    Brest Super Reconstructor Staff Member

    2,255
    364
    Sep 30, 2010
    WCA:
    2011STUA01
    YouTube:
    BrestCubing
    F U' R2 D R' U2 R D' R2 U F'
     

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