105x105x105 Rubik's cube solve attempt

Discussion in 'General Speedcubing Discussion' started by soup, Mar 25, 2013.

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  1. soup

    soup Member

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    I'll attempt to solve a 105x105x105 cube over the course of a few weeks. I'm confident that it'll be done within roughly 200 ~ 250 hours of solve time. I'll be live feeding my attempt, as well as recording via hypercam to upload a time-lapse. Hopefully, this will set a record for largest cube ever solved by hand. The current largest cube ever solved by hand I'm aware of is 100x100x100.

    Live feed is here
     
  2. Akiro

    Akiro Member

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    Since it is on a computer...you should solve it with your feet...
    Louis Cormier style!
     
  3. ^^
     
  4. uniacto

    uniacto Member

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  5. DuffyEdge

    DuffyEdge Member

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    That'll take a while :)
     
  6. Christopher Mowla

    Christopher Mowla Premium Member

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    About how many hours of solve time have you spent solving this 105^3 so far? I made an approximation formula (it gives an estimated "optimal" official average solve time in seconds for a cube of size n...it's based on the current official 3x3x3 Avg. WR) while back, and it gives an average solve time for the 105^3 to be approximately 1220 hours, which is over 7 full (24 hours a day) weeks of solve time. I'm just curious. :)

    EDIT:
    Okay, so you're just beginning now (for some odd reason I didn't catch that). I guess well see. No pressure, just have fun!
     
    Last edited: Mar 26, 2013
  7. soup

    soup Member

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    k.. beginning now.
     
  8. chrissyD

    chrissyD Member

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    I just realised the actual size of the thing when I went on the live stream

    umadbro?
     
  9. uniacto

    uniacto Member

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    [​IMG]

    that thing is gargantuan.
     
  10. qqwref

    qqwref Member

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    Your formula is O(n^4/log(n)). That is probably because you tried to fit records on real times, and real-cube times have factors such as a decrease in cube stability and turnspeed as the number of layers increases. (Also, you're overfitting the data... a LOT :p) This is unrealistic for computer cubes because as the number of layers increases the difficulty of turning the cube stays the same, and in fact, the difficulty of finding pieces peaks at some point - essentially, it becomes impossible to just scan the cube and find the right piece, so you have to switch to more local guess-and-check type strategies which pretty much take a constant amount of time (relative to cube size). What I'm saying is that the time taken per piece increases for a bit, and then more or less levels off, as cube size increases. The number of pieces is O(n^2) so there you go.

    I know soup took ~16 hours for the 40x40x40. That works out to about 6.31 seconds per piece. At that speed he would finish the 105x105x105 in 113.7 hours. Actually, I think he's being quite generous with his time estimate, but we'll see!
     
  11. I still cant believe you are going to do this :3
     
  12. Mikel

    Mikel Premium Member

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    Good luck! Wow, that is a monstrous cube.
     
  13. ben1996123

    ben1996123 Banned

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    1 hour 42 minutes, 8/103 rows of 1 centre solved = 12:45 per row.

    = 129:37:30 to finish centres.
     
  14. qqwref

    qqwref Member

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    You assumed he had to solve the last center, didn't you? :p
     
  15. cmhardw

    cmhardw Premium Member

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    That is so cool! Bookmarked! Good luck!
     
  16. That70sShowDude

    That70sShowDude Member

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  17. kunparekh18

    kunparekh18 Member

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    I salute you, sir, for taking up this task!
     
  18. JianhanC

    JianhanC Member

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    Can't even begin to fathom solving it. Amazing patience.
     

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