[HN Gopher] Speedcubing kid can skip last layer by learning 3915...
___________________________________________________________________
Speedcubing kid can skip last layer by learning 3915 algorithms for
every case
Author : weinzierl
Score : 73 points
Date : 2022-08-13 19:09 UTC (3 hours ago)
(HTM) web link (twitter.com)
(TXT) w3m dump (twitter.com)
| klntsky wrote:
| This is too much for a human. It may be that there was another
| computer screen not shown on video, displaying particular steps
| to perform. Not saying I think it's fake, but the supposed proof
| video does not actually prove anything.
| rpmisms wrote:
| It's really not. It's just hard.
| robswc wrote:
| I know people can remember things sequentially really well
| with practice... maybe patterns are easy to remember?
|
| I'm skeptical but also have no authority on memorization or
| rubiks cubes... I've also seen crazier things lol
| xdfgh1112 wrote:
| Only one person has done it. That's beyond "hard" and into
| "you need a very unique type of brain", imo. Many other
| people have tried it and failed.
| [deleted]
| rasz wrote:
| Might be military grade autism. You are great at speedcubing,
| but best case scenario cant relate to holidays or having lunch
| etc.
| sonofhans wrote:
| Consider, from someone who knows speedcubing, that it's not
| 3,000+ random algorithms, more like a decision tree of
| algorithms. Many are similar and related; many are rotated or
| mirrored. Long practice and pattern recognition make most
| algorithm selection second-nature. Yes, there's a ton of
| memorization involved, but the limited problem domain, and
| therefore easy mental modeling of it, make this exactly the
| kind of task at which humans excel.
|
| Professional chess and go players can replay many, sometimes
| all, of their past games from memory. Surely that's a greater
| feat.
| dmurray wrote:
| Agreed, it seems in the ballpark of what a well-prepared 2400
| (which is to say, very good, but not close to enough to make
| a living from playing, never mind world class) chess player
| might know in terms of opening theory.
| xiphias2 wrote:
| The coolest things with humans and internet is that now that a
| person showed that it's possible to achieve in a year, others
| will replicate it.
| stephc_int13 wrote:
| It seems like human computers can be a thing. Frank Herbert was
| not completely out of his mind.
|
| https://en.wikipedia.org/wiki/Organizations_of_the_Dune_univ...
| chris_wot wrote:
| So... the better link is here:
|
| https://www.reddit.com/r/Cubers/comments/whuhkq/i_learned_fu...
| klyrs wrote:
| That's just a badly implemented redirect to
| https://youtube.com/playlist?list=PLRfiRupL1WHMiwO10094hkuFS...
| tmh88j wrote:
| The video creator made that reddit post and is actively
| answering questions. The twitter post was created by someone
| else.
| klyrs wrote:
| Ah, fair enough. Chains of captive redirects make me
| twitchy.
| emkoemko wrote:
| better link?
| RosanaAnaDana wrote:
| A hackernews thread, about a tweet, which is a reddit screenshot,
| that is actually a link to a youtube video.
|
| This is why we can't have nice things internet friends.
| ghayes wrote:
| Reddit thread with author:
| https://old.reddit.com/r/Cubers/comments/whuhkq/i_learned_fu...
|
| YouTube playlist by author:
| https://youtube.com/playlist?list=PLRfiRupL1WHMiwO10094hkuFS...
| rpmisms wrote:
| This is pure insanity. The algorithms do pass out of active
| memory and into long-term muscle memory, but 144 a day is
| ludicrous.
| xdfgh1112 wrote:
| Technically 144 a week, but yeah. That's a stretch even with
| spaced repetition. On the other hand OP is doing 15 second
| solves, i.e. 240 solves an hour (1hr per day) plus a lot more
| on the learning day, so cycling through all the 1LLL algorithms
| fairly frequently.
| kergonath wrote:
| That is properly, genuinely impressive. I spent quite a lot of
| time finding the "simple" algorithms on my own, but this is a
| whole other world. Remarkable!
| stavros wrote:
| Is there any link that has context? The link and the comments
| just point to a YouTube channel of someone practicing?
| v64 wrote:
| The context of the video is to demonstrate to technical
| speedcubers that he's achieved the feat he claims. By showing
| his solves on video, speedcubers can tell that he's using the
| algorithms he claims and not more common techniques to
| obfuscate the achievement. The length of the video is to
| provide even further evidence of the claim.
|
| Edit: The achievement is that he's been able to minimize the
| number of turns he needs to complete the cube by memorizing
| ~4000 edge cases and the specific turns needed to solve the
| cube from those configurations, as opposed to generalized
| algorithms that require memorizing less edge cases at the
| expense of more turns.
|
| This has been a known possibility since 2011, but this is the
| first documentation of someone demonstrating mastery of it.
| stavros wrote:
| Hmm I see, thank you. How do we know that he hasn't just
| learned the specific cube he's solving in the video, though?
| Is there some verifiable source of randomness?
| v64 wrote:
| I'm not a member of the speedcubing community (only
| adjacent to it through acquaintances), but as far as I
| know, the website he's using is standard in the community
| and those in the know who have viewed the video acknowledge
| it as legitimate.
___________________________________________________________________
(page generated 2022-08-13 23:00 UTC)