The FMC thread

Discussion in 'General Speedcubing Discussion' started by blah, Jul 12, 2009.

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  1. Mirek

    Mirek Member

    108
    0
    Feb 6, 2008

    After your advise, I submitted my solution once more just to be sure it would show up. Guess what? It wouldn't show. Can you make it more explicit how the Quote text has to be formatted? Such problem was not on fmc.mustcube.net in the past.
    This is my solution that I posted for FMC #477
    D L' U B' R' U' R U' R' B' U' B R F L' U' L' D2 L U L' D2 U' L2 (24)

    On inverse scramble with pre-move D':
    2x2x2: L2 [email protected] L2 F'
    2x2x3: (R') B' U B (R) where inserted moves help with next corner-edge pair
    all but 3 corners: U R' U R B U' L and undo premove D'
    insert at @: D2 L U' L' D2 L U L'
    I hoped for better move cancellations.

    Mirek
     
  2. Shah

    Shah Member

    138
    0
    Nov 14, 2013
    India
    I started cubing a few months back and I use Roux now. I am interested in FMC. From where should I start?
     
  3. EMI

    EMI Member

    844
    23
    Apr 23, 2011
    Germany
    WCA:
    2011RHEI01
    YouTube:
    EMI94100
    Look into other methods, especially Heise and Petrus. Also understand the concept of NISS and insertions.
     
  4. okayama

    okayama Member

    543
    11
    May 9, 2010
    Hiroshima, Japan
    WCA:
    2009OKAY01
    YouTube:
    okayamat
    Wow! Quite a nice solution. Did you get it within 1-hour?

    Maybe during May 7th~May 11th, submission program was changed, and since that time
    this problem has remained unresolved to this date.
    I don't know why this change was made. Everyone complains, and no one succeeded
    in contacting Per and reporting this problem.

    Anyway, the current submission program needs backslash before prime in your
    comments (not solution). You should have submitted your solution like this:

    Solution: D L' U B' R' U' R U' R' B' U' B R F L' U' L' D2 L U L' D2 U' L2
    Quote: (Optional)
    On inverse scramble with pre-move D\':
    2x2x2: L2 [email protected] L2 F\'
    2x2x3: (R\') B\' U B (R) where inserted moves help with next corner-edge pair
    all but 3 corners: U R\' U R B U\' L and undo premove D\'
    insert at @: D2 L U\' L\' D2 L U L\'
    I hoped for better move cancellations.
     
    Last edited: Nov 25, 2013
  5. Mirek

    Mirek Member

    108
    0
    Feb 6, 2008

    No, this took me more than an hour. Probably close to 2 hours. I know I need to warm up more and work on my speed.
    It must be the two backslashes I missed to insert in the last row. :-(

    Mirek
     
  6. Mirek

    Mirek Member

    108
    0
    Feb 6, 2008
    Hi,

    I wanna share with you my late solution for FMC from weekly competition 2013-46 here at www.speedsolving.com. I consider it quite interesting.
    Scramble: B2 L' B2 U2 R F2 R D2 B2 F2 L B' R2 U' F2 R F2 R2 D U
    F L B L F' L' [L2] _F [F] __D2 B' F D F' B R D @ R2 D R2 + 4 pairs cycle @ = (D' B D R' D' B' D ) done
    => F L B L F' L' F D2 B' F D F' B R B D R' D' B' D R2 D R2 F L2 (25 HTM)
    Found in 15 min.
    In brackets are suggested pre-moves that come up at that position. I had to use them to be able to see and backtrack the last 4 pairs.

    Mirek
     
  7. kinch2002

    kinch2002 Premium Member

    2,504
    7
    Dec 22, 2008
    Guildford! UK!
    WCA:
    2009SHEP01
    YouTube:
    kinch2002
    If you are having big problems with Per's site, perhaps it's time for someone to make a new site to run a weekly FM comp on? Some ideas:

    - 2 or 3 scrambles per week
    - Shorter scrambles
    - Images in the correct orientation
    - Running averages, personal bests, overall records
     
  8. Sebastien

    Sebastien Premium Member

    800
    19
    Apr 22, 2008
    WCA:
    2008AURO01
  9. Attila

    Attila Member

    287
    42
    Nov 7, 2010
    Halásztelek, Hungary
    WCA:
    2012HORV01
    Hungarian Open scramble:
    L2 B2 D U R2 F2 D’ U2 R’ F2 D2 R’ U2 B’ U F’ L2 R’ U2
    My (worst) solution:
    F2 B2 U’ D’ F’ B’ U’ L D B U2 F’ R B2 F2 L’ U2 B’ R’ D2 B’ F L2 U’ R’ L F B U’ D’ F2 U’ D R2 L2 U 36 moves.
    About 50 minutes I found this 29 move skeleton:
    F2 B2 U’ D’ F’ B’ U’ L D B U2 F’ R B2 F2 L’ U2 B’ R’ D2 B’ F @ L2 D B’ F’ D2 B’ F2 all but 6 centres.
    Unfortunately, there is little time left, so I used a simply ending.
    Then I found a nice insertion in my home:
    insert at @: S M S’ M’
    F2 B2 U’ D’ F’ B’ U’ L D B U2 F’ R B2 F2 L’ U2 B’ R’ D U L R’ F’ B’ R U’ D’ R2 U’ D2 6 moves cancel.
    This result is a bit disappointing, but better than DNF. I was too slow today.
     
  10. porkynator

    porkynator Member

    1,150
    216
    Oct 27, 2010
    Belluno, Italy
    WCA:
    2011TRON02
    YouTube:
    PorkyDays
    I'd like to introduce my notation for NISS solves, because I find it easy and practical. If you like it, we can use it (or something similar) as standard notation :)
    The rule of thumb is: a '(' means "switch to inverse scramble using the inverse sequence of the moves found for normal scramble as premoves", a ')' means "switch to normal scramble (...)". An example will make it easy for everyone to understand:

    Scramble: R2 F D2 F' R2 B' D2 B' F' L2 F U' F2 L' U2 B R' F D2 F D'
    Solution: L2 D' L2 R B L F' L' F R' U2 F' U F U2 F U F' U' R' F' L F L' F' R2 F2 R2 (28 HTM)
    Solution (written without this notation and with comments):
    On normal scramble:
    L2 D' L2 //2x2x1
    On inverse scramble with premoves L2 D L2:
    R2 F2 //Another 2x2x1
    On normal scramble with premoves F2 R2:
    L2 D' L2 //Two 2x2x1
    R B R' //Pseudo 2x2x3
    On inverse scramble with premoves R B' R' L2 D L2:
    R2 F2 R2 F R //XX-cross + pair in slot
    On normal scramble with premoves R' F' R2 F2 R2:
    L2 D' L2 R B //XX-cross -1 move + pair ready (5/5)
    L F' L' F R' //F2L -1 + pair ready (5/10)
    U2 F' U F //F2L (4/14)
    U2 F U F' U' R' F' L F L' R //LL (11/25)
    R' F' R2 F2 R2 //Undo premoves, 2 moves cancel out (3/28)
    Written with my notation and wi:
    L2 D' L2 //2x2x1 (3/3)
    (R2 F2) //Another 2x2x1 (2/5)
    R B R' //Pseudo 2x2x3 (3/8)
    (R2 F R) //XX-cross + pair in slot (3/11)
    R L F' L' F R' //F2L -1 + pair ready, 1 move cancels out (4/15)
    U2 F' U F //F2L (4/19)
    U2 F U F' U' R' F' L F L' R //LL, 2 moves cancel out with premoves (9/28)
    Much more concise.
     
  11. mycube

    mycube Member

    1,018
    28
    Sep 3, 2011
    Regensburg, Germany
    WCA:
    2011FRES01
    nice idea!
    i just use a 'switch' for using NISS in fmc solves. So I am not writing down all the premoves because this looks really confusing. Everyone who is able to use NISS does not need all the premoves :)
     
  12. Shah

    Shah Member

    138
    0
    Nov 14, 2013
    India
    This is my first ever FMC try. I took an easy scramble and here is the 24 move skeleton I found.

    Scramble: R U2 R' F2 D2 B2 R' D2 L' D2 R' D' F2 R U' F2 R U F R2

    F' R2 D' //2x2x2 Block (3/3)
    R U' R2 F2 R //Add Square (5/8)
    U F' B' L' U2 L B L2 F //F2L-1 (9/17)
    y2 F' U' F U R U' R' // (7/24)

    Can anyone help me with finding a good insertion to this skeleton?

    I also need links from where I can find a list of optimal 3-cycle corner commutators?
     
  13. Mike Hughey

    Mike Hughey Super Moderator Staff Member

    8,904
    518
    Jun 7, 2007
    Indianapolis
    WCA:
    2007HUGH01
    YouTube:
    MikeHughey1
    I like it, porkynator. I intend to start using it on my solves; it's normally so cumbersome to write out explanations; this will make it much easier. Thank you for the idea!
     
  14. tx789

    tx789 Member

    1,831
    82
    Sep 6, 2010
    New Zealand
    WCA:
    2010HUNT02
    YouTube:
    thetx789
    yesterday I got this DNF. First one hour attempt I have done.

    pe-moves: B2 R'

    F L' U' D F' U' D2 F' R' U2 L' B U2 F U2 D B2 F2 D' F' U' F' D2 U' L

    U2 L D'//square 3/3
    R2 U2 F//2x2x3 block 3/6
    B' R D' R2 B2 R B2 R' B R//F2L#3 10/16
    B L B2 L' B L B' L'//tripod 8/24
    L B' L' B//edges 4/28
    View at alg.garron.us

    And I am left with two flipped edges. Two twisted corners and a A-perm. This seems like a good attempt since I suck at FMC. I am extremely happy with that 2x2x3 block.
     
    Last edited: Dec 5, 2013
  15. Jaysammey777

    Jaysammey777 Member

    1,215
    319
    Nov 24, 2009
    University of Georgia
    WCA:
    2010AMBR01
    YouTube:
    Jaysammey777
    I have a hunch that FMC can help you be color neutral.
    Upon returning to cubing this year, I started just on white. Today I decided to try out other sides, and found that I was still sub-20. The only time that I ever think about the cube without basing colors off the white and yellow sides, is in FMC. Could these be related?
     
  16. porkynator

    porkynator Member

    1,150
    216
    Oct 27, 2010
    Belluno, Italy
    WCA:
    2011TRON02
    YouTube:
    PorkyDays
    I am posting this solve here not because of the final movecount (30 HTM is an average result for me), but because I used a nice technique for the first time in it. I am using the NISS notation I explained a few posts above.

    Scramble: R2 L2 D2 F2 D' R2 U' B2 D' F2 U2 F' D2 L' F U B F2 U2 F2 L
    Solution U2 F B' L2 D2 F' U F2 L' B2 L F2 L' B' L' D L B' D L U L' D' L U2 R F2 R' L2 B (30 HTM)
    U2 F B' L2 D2 //Two 2x2x1 (5/5)
    (B' L2 R F2 R' F) //All but 4 edges and 4 corners (6/11)
    Final skeleton (on normal scramble):
    U2 F B' L2 D2 F' * R F2 R' L2 B

    * U + L' B L' D L B' L # U' //4 edges (9/20)
    + F2 L' B2 L F2 L' B2 L //1 corner (5/25)
    # L' D L U L' D' L U' //3 corners (5/30)

    The first insertion is the cool thing. I was inspired by this: I conjugated all the edges on 1 side (U L' B L') so that I could solve them with only one move (D), and then I put them back (L B' L U'). Luckily, corners have been nicely affected by this insertion, so I was left with a 2-2 swap :)
     
  17. Mirek

    Mirek Member

    108
    0
    Feb 6, 2008

    In that case, to make it even more interesting (and less work), you can solve all 4 edges and 4 corners with "one move U" and, well, some more (9+9) preparation moves like this:
    * B D R2 B R' B2 D U2 F' _U_ F U2 D' B2 R B' R2 D' B'
    It is still 30 move total, though.

    Mirek
     
  18. okayama

    okayama Member

    543
    11
    May 9, 2010
    Hiroshima, Japan
    WCA:
    2009OKAY01
    YouTube:
    okayamat
    My solutions from Hokuriku Eve Open 2013.

    1st scramble: D2 L' B L' F B2 U' F B R2 F' D' R2 U D2 L2 D B2
    1st solution: D' F' D F' B2 U2 B F U' F2 L' F L U L2 F2 L' R U R' U' B L F2 L' B' U' L2 R2 (29 moves)
    10 min backup solution.

    Pre-scramble: L2 R2

    1st square: (ready)
    2nd square: D' F' D
    2x2x3 block: F' B'
    EO+More square: B' U2 B
    EO+More square: F U' F2 L' F
    Finish F2L: L U L
    LL: L F2 L' R U R' U' B L F2 L' B' U'
    Correction: L2 R2

    I couldn't find any better solution. One of solutions I found is

    Pre-scramble: B' U' B U2 L2 R2

    F2L minus 1 slot: D' F' D * B' F'
    Orient edges: F' L' F
    All but 3 edges: L U L' U' L U L' U'
    U-perm: U2 L B' F U2 F' B L U2
    Correction: B' U' B U2 L2 R2

    which resulted in 29 moves. (IF says
    Insert at *: D' M2 D F' D' M2 D F
    is optimal, which gives 28 moves, though)
    2nd scramble: R F2 L2 R D2 L2 F2 D' B L2 D B D' F L2 B2 U L
    2nd solution: U B U2 L' U L U2 F R' F R F2 U2 B L B' D' B D B2 U' L' F2 D F' R2 B L D2 L' (30 moves)
    NISS solve.

    (Inverse)
    Pre-scramble: B2

    1st square: L D2 L'
    2nd square: B' R2
    2x2x3 block: F D' F2 L U
    F2L minus 1 slot: B2 D' B' D B

    (Normal)
    Pre-scramble: B' D' B D B2 U' L' F2 D F' R2 B L D2 L'

    F2L: U B U' B
    LL: B' U' L' U L B / B' U2 F R' F R F2 U2 B L
    Correction: B' D' B D B2 U' L' F2 D F' R2 B L D2 L'

    Both scrambles looked quite promising, should be at least Sub 28,
    but my results were too poor for such nice scrambles.
    I was in poor health because of the cold...
     
    Last edited: Dec 21, 2013
  19. TheNextFeliks

    TheNextFeliks Member

    2,412
    2
    Oct 27, 2012
    KCKS
    WCA:
    2013POPE01
    YouTube:
    TheNextFeliks
    My solution for this week's scramble. Tied PB. Optimal insertion.

    Scramble:F B' R2 F' L2 F' R D2 U B' R2 U' D' L' B2 F D F' L D R2 L2 F2 D2 R' U' L' R2 U2 F'
    R' U' R L'
    B2 U B L' B2
    U' R' U R
    U' F
    U2 B' R' B
    U (U2 R D R' U2 R D' R') R2 U' R'
    D' F'

    I did premoves D' F' so scramble D' F' then the scramble
    Thought it would be better. But whatever.
     
    Last edited: Dec 22, 2013
  20. Sebastien

    Sebastien Premium Member

    800
    19
    Apr 22, 2008
    WCA:
    2008AURO01
    Today at Berlin Cube Day 2013 I finished my 35th and last official FMC attempt in 2013. In the beginning of 2013 I decided to submit a solve on all my attempts and managed to do so except for one anger DNF. So here is my Average of 2013:

    32, 26, 26, 27, 27, 27, 26, 26, 30, (DNF), 28, 25, (23), 30, 31, 29, 27, 26, 31, 26, 29, 26, 31, 23, 25, 29, 25, 30, 29, 24, 32, 27, 27, 29, 26 = 27,64
     

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