Improvements for M2/R2

Discussion in 'Blindsolving Discussion' started by Stefan, Oct 23, 2007.

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  1. riffz

    riffz Member

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    I have a list that I have compiled of, IMO speed optimal corner algs. Pretty much all speed optimized corner algs are still comms, just not move optimal. I'm still working through it and changing algs, because it seems every time I go through it I notice a comm I like better than the one I chose before. I'll publish it when I'm satisfied with it. :)
     
  2. Sakarie

    Sakarie Member

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    Oh, it will be a pleasure to see when you're done. Unfortunately I use URB as buffer, so I can't really use it 100%.
     
  3. deadalnix

    deadalnix Member

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    Maybe you could produce a draft version. We always are smarter together (and yes, it looks like a shitty gimmick for an advertisement).
     
  4. riffz

    riffz Member

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    Yes, I suppose you're right. I'll upload it today or tomorrow, since I'm at my gf's currently.
     
  5. Michal Robaczyk

    Michal Robaczyk Member

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    Hi,

    I have few questions regarding this topic and I'd like to explain some my thoughts about M2/R2.

    Well, I was using typical-basic version of M2/R2 (with no improvements). My buffers are FD and FDR. Now, after reading this topic, I'm gonna improve my method, especially the ugly cases.

    And, here is the question:
    What is better: to learn all 24 cases for M-slice edges (what Freddy88 wrote here: http://www.speedsolving.com/forum/s...ents-for-M2-R2&p=107654&viewfull=1#post107654 ), or learn only 2 of them (UF<->DB) + learn to avoid the UB sticker (what Haru has explained here: http://www.speedsolving.com/forum/s...ents-for-M2-R2&p=184171&viewfull=1#post184171 ) ?

    Basically the cons of the second version is that you have to combine with the edges during memorisation; and I wanna the memo is nice and clean, just no-thinking edge-by-edge as they are on the cube.



    I'm solving corners before edges (using my short memory), and my solution in case of parity is that after solving all corners i do R2 move (so that edges are on their places and FDR is swapped with BRU). After solving all edges I undo the R2 move and then I execute the M2R2 parity alg.


    I'd like to mention other one thing I didn't see in the topic (and some ppl might not know that).
    When there are some stupid edges, that means they are on their places but disoriented after scramle, you can avoid ugly cases of M-slice.
    Instead of a ugly cycle: FD->UB->UF and then orienting FD and a stupid edge, you can do nice algs for BU and FU, then orient UB and the stupid edge.
    An example:
    Scramble: R2 B2 R2 U' L2 B F2 R B' D' L2 B' R' B
    Normal, ugly solve:
    (UB) - (U R’ U’ l U’ R U) M2 (U’ R’ U l’ U R U’) (thx for this great alg btw)
    (UF) - M2’ D (UR2U’ M’ UR2U’ M) D’
    orient DF and UR

    Solve with the trick I've mentioned:
    (BU) - M2
    (FU) - M U2 M U2
    orient UB and UR.


    This idea rox! I'm gonna use it. Same as Macky, I have binded letters with adequate moves, and I less thinking is faster imo.


    Sth regarding R2 for corners:
    My algs for ugly-URB cases are:
    U' L U L' U' L U R2 U' L' U L U' L' U
    U' L' U L U' L' U R2 U' L U L' U' L U
    I think they are pretty fast.

    And do you know any other tricks to improve R2?
    R2+ is nice and fast, but there is lot to learn though.


    Cya
     
    Last edited: Sep 23, 2010
  6. Stefan

    Stefan Member

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    Gosh I'm stupid...
    Will use these from now on, thanks.

    Btw, for the ugly L corners I now use these:
    BUL: y (R U R2 U' R') F2 (R U R2 U' R') y'
    DBL: (U' L2 U L' U' L U) R2 (U' L' U L U' L2' U)
    FDL: (U' L' U L' U' L U) R2 (U' L' U L U' L U)
    UFL: (L U' L' U L' U' L U) R2 (U' L' U L U' L U L')

    Hmm... especially with these being so L-turn-heavy and even the nice cases having more L turns than R turns... maybe the L2 method would be better...

    I see there are many nice ideas in this thread, some I haven't really tried much before as my main problem has always been slow memorization due to lack of practice. I'm currently working on memorization, hope I'll be fast soon and then I'm looking forward to check out all those improvements.
     
    Last edited: Sep 23, 2010
  7. Simboubou

    Simboubou Member

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    R+ seems cool, but doesn't it come down to TuRBo ?
     
  8. Marcell

    Marcell Member

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    I would advise you to learn those 24 cases (I know I did), it's worth it. But not neccessarily from that list.

    No.
    TuRBo: set up next two corners, then choose one out of 18 algs depending on their orientation.
    R2+: set up third corner of the cycle using L*, then choose one out of 54 algs defined by the second corner and the orientation of the third one. (In the RL and LR parts.)

    TuRBo: lot more thinking.
    R2+: lot more algs.
     
  9. Michal Robaczyk

    Michal Robaczyk Member

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    What algs do you propose? :)


    Btw I found some nice algs for odd parity cases (in M2/R2):
    These two are already on Stefan's web:
    L2 y’ R’ U’ M’ U’ L U r2 F R U’ F R U x’ y’
    r2 y’ R’ U’ M’ U’ L U r2 F R U’ F R U x y

    Other cases:
    r2 U’ R U l’ U2 R U’ M U M’ U’ R’ U2 l R U’ R2 U

    r2 y’ R F’ U F R U R2 F R F’ R U’ R2 y
    L2 y’ R F’ U F R U R2 F R F’ R U’ R2 y x2
     
  10. Marcell

    Marcell Member

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  11. mark49152

    mark49152 Super Moderator Staff Member

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  12. mark49152

    mark49152 Super Moderator Staff Member

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