4x4 Blindfolded, U2 Centers Method Tutorial

Discussion in 'How-to's, Guides, etc.' started by ender9994, Jan 12, 2011.

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  1. ender9994

    ender9994 Member

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    Nov 12, 2008
    Whippany NJ
    WCA:
    2008GROM01
    YouTube:
    ender9994
    Hey guys, I decided to make a video tutorial for solving the centers of the 4x4 blindfolded using the U2 method. I made this so that I could practice teaching others this method as well as the fact that there are not many guides specifically for this.

    In part 1, I go over an introduction to the method as well as the basics for shooting pieces in the buffer location to its destination on the F, R, B, and L faces.



    Part 1.5: An explanation of breaking into new cycles as well as an example solve for the F, R, B, and L face centers



    Part 2: How to solve the D centers



    Part 3: How to solve the U centers


    Hopefully this will convince more people to attempt 4x4 blind because with previous knowledge of the m2 method, U2 should easily be learn-able by someone within a hour.

    For those that need them, here is a complete list of the center position set up moves:

    Centers:

    Ulb: {r’ur} U {r’u’r} U {r’ur} U2 {r’u’r} U2
    Ulf: U2
    Urb: Buffer
    Urf: {r’ur} U’ {r’u’r} U’ {r’ur} U2 {r’u’r} U2

    Flu: {U2 b u b' U2} U2 {U2 b u' b' U2}
    Fld: {U2 r d2 r’} U2 { r d2 r’ U2}
    Fru: {l' u2 l} U2 {l' u2 l}
    Frd: {f' d' f} U2 {f' d f}

    Rub: {U2 r' u r U2} U2 {U2 r' u' r U2}
    Rdb: {U' r' d' r U} U2 {U' r' d r U}
    Ruf: {U2 r u’ r’} U2 { r u r’ U2}
    Rdf: {l d’ l’} U2 { l d l’}

    Ldf: {U' r' d r U} U2 {U' r' d' r U}
    Luf: {U2 r' u' r U2} U2 {U2 r' u r U2}
    Lbu: {U l u' l' U'} U2 {U l u l' U'}
    Ldb: {l d l'} U2 {l d' l'}

    Brd: {U b d b' U'} U2 {U b d' b' U'}
    Blu: {U' f' u' f U} U2 {U' f' u f U}
    Bru: {U l u2 l' U'} U2 {U l u2 l' U'}
    Bru: { f u f’} U2 { f u’ f }

    Dlf: {l B d2 B' l'} U2 {l B d2 B' l'}
    Drf: {D' l B d2 B' l'} U2 {l B d2 B' l' D}
    Dlb: {D l B d2 B' l'} U2 {l B d2 B' l' D'}
    Drb: {D2 l B d2 B' l'} U2 {l B d2 B' l' D2}

    Center Parity: U2

    Please tell me if there are any mistakes above and feel free to give advice/tips of the tutorial. I am not the greatest speaker/teacher but I wish to become better.

    Thanks

    Doug

    Also, special thanks to trying-to-speedcube because his example solve was how I initially learned.
     
    Last edited by a moderator: Apr 7, 2016
  2. MightyGuy

    MightyGuy Member

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    Jul 14, 2010
    Very nice tutorial! I'm looking forward to part 2.
     
  3. nickvu2

    nickvu2 Member

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    I also can't wait for part 2! Looking around, I see very little info out there on 4x4 BLD. (Another reason why this tutorial is so appreciated.) Noob questions: What are the popular methods people are using these days for 4x4 BLD? Is U2 centers a standard solution for centers, or a variation, or something brand new? What are the advantages/disadvantages to this approach, compared to others (if there are others)?
     
  4. Marcell

    Marcell Member

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  5. ender9994

    ender9994 Member

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    ender9994
    To my knowledge the main methods for edges are r2 (which I use) or commutators, while the main methods for centers are commutators or U2. In both cases commutators provide a much more efficient process and can be extremely fast if you get good at them. However, r2 and U2 can be very fast as well due to their lack of intuition during the solve. I believe Dennis Strehlau uses U2 for the centers.

    I am sorry I have not posted the other parts yet, but I guarantee that the final 2 parts will be up by Friday at the latest.
     
  6. mati rubik

    mati rubik Member

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    Aug 24, 2008
    santiago, chile
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    Mk669
    can I do [d l d' l'] U2 [l d l' d'] for the Fdl piece?

    and to similar to avoid the extra U2 in special cases?
     
  7. RyanReese09

    RyanReese09 Premium Member

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    May 16, 2010
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    Awesome first part-makes a lot of sense! I assume to break into a new cycle you just pick any other random peice and get that to buffer?
     
  8. blah

    blah brah

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    I may be wrong, but I'm pretty sure U2 is not the standard method for centers.
     
  9. Erik

    Erik Member

    Define standard method
     
  10. Marcell

    Marcell Member

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    Yes, of course.
     
  11. nickvu2

    nickvu2 Member

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    I was originally trying to ask how widely used the method was. Perhaps it was an unclear choice of words.
     
  12. ender9994

    ender9994 Member

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    Hey guys, sorry it took so long to finish up this tutorial. The first post has been updated with the rest of the tutorial. If anyone is still confused about something, please tell me and I will make a specific video explaining it.

    Doug
     
  13. rubiksarlen

    rubiksarlen Member

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    there are some algs which have more than one U2 move in them. so to know whether i'll have parity, do i count targets or number of U2s?
     
  14. miniGOINGS

    miniGOINGS Member

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    Feb 27, 2009
    The number of targets will equal the number of U2s. While some algorithms have more than one U2, they also have additional U moves that in the end have the U layer a U2 away. Hope that makes sense.
     
  15. rubiksarlen

    rubiksarlen Member

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    so i just count targets?
    and yea, i guess i understand
     
  16. mariano.aquino

    mariano.aquino Premium Member

    bumping!

    what do you think about these algorithms?
    (I use Ulb as buffer)

    For U face centers:
    Ubr: r' F r' b2 r F' r' b2 r2 (A perm)
    Ufl: y l F' l b2 l' F l b2 l2 y' (A perm)

    For D face: columns commutator
    Dfr: r2 D' r2 D r2 U2 r2 D' r2 D r2 (braindead 11-mover)
    for the rest, just adjust D face

    I just started practicing, and I love it! very easy and braindead. for edges and corners I use r2/R2, so, it´s just more of tha same =)

    Thx!
     
  17. MaikeruKonare

    MaikeruKonare Member

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    Why can I find dozens of blind centers tutorials but not a single edges tutorial?
     
  18. kinch2002

    kinch2002 Premium Member

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    Clicky on my channel :p
    r2 tutorial
     

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