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(LiveLeak) Video First robot to solve a Rubik's cube in under a second   (liveleak.com) divider line 68
    More: Video, cubes, robots  
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7078 clicks; posted to Video » on 27 Sep 2013 at 9:56 AM (41 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-09-27 07:49:42 PM

BEER_ME_in_CT: Are people still getting cancer and dying from it? Just checking.


Yes, but I don't see how knowledge of mechanical engineering and computer programming is going to help.
 
2013-09-27 08:41:37 PM

talkertopc
2013-09-27 07:49:42 PM


BEER_ME_in_CT: Are people still getting cancer and dying from it? Just checking.

Yes, but I don't see how knowledge of mechanical engineering and computer programming is going to help.

You won't know till you stick them in the box.

/// couldn't hurt.
 
2013-09-27 09:22:33 PM

Glockenspiel Hero: Humans have 15 seconds to inspect the cube before moving the pieces in tournaments. That seems like a fair rule for a robot as well: there's no reason at all you can't use multiple cameras (or spin the cube automatically) and generate the solution in under that time. Hell, a guy built a lego robot that can do the entire process in about five seconds


Or build a rig like this one, http://www.youtube.com/watch?v=b5b9BIBuOd4
 
2013-09-27 09:23:37 PM
Definitely not impressed..... Damned computer took more than one, two, three moves to solve the problem....


cdn2.holytaco.com
 
2013-09-27 09:30:40 PM

Hack Patooey: except the five minutes to scan it, and all the pre-processing of the moves.


The algorithm for solving a cube is pretty efficient, a good programmer can easily write it up so that it takes less than a second for the computer to work out the solution. The issue is the robotic side of things, need some very  tight tolerances so that things get moved just the right amount so there's no catch from slightly misaligned pieces.
 
2013-09-28 12:36:03 AM

Kuta: That begs the question, what is the hypothetical maximum number of moves to solve a random Rubik's cube?


they say the thing is never more than 20 moves away from being solved
 
2013-09-28 01:42:55 AM
Hell, I was half expecting a robot that just slaps a new set of labels on the rubik's cube and calls it 'solved'
 
2013-09-28 04:07:56 AM
That was totally not worth the amount of time it must have taken.
 
2013-09-28 04:44:51 AM

dready zim: That was totally not worth the amount of time it must have taken.


It was done in Brazil 2 years ago and I bet whoever did it has a good job now and no longer has to advertize with hobby projects.
 
2013-09-28 07:49:32 AM

Dafatone: But I say I know a Rubik's Cuber and everyone lost their flipping minds. I still don't know what happened.


Well, you said you were 'friends' with him.
Farkers don't have 'friends'.
That's why we're here.
 
2013-09-28 09:38:33 AM
That's...disturbing.
 
2013-09-28 09:50:23 AM

darwinpolice: mrshowrules: For instance, if you force a corner piece to rotate unnaturally, the cube in unsolvable.

This, by the way, is one of the best possible ways to troll a nerd.


Depends on the quality of your nerd.

I hung out with CS geeks during the Cube's original peak popularity. I saw quite a few nerds trolled with one rotated corner, or one flipped edge, or two swapped edges.

Many spent a long time before catching on or giving up in frustration.

One fiddled for a bit less than the usual amount of time, then said "this cube's been tampered" -- I think he also stated which kind of tampering it was.

And one or two just solved in the usual amount of time, with one corner or edge rotated. And a snide grin.
 
2013-09-28 10:56:24 AM
jfarkinB
2013-09-28 09:50:23 AM


darwinpolice: mrshowrules: For instance, if you force a corner piece to rotate unnaturally, the cube in unsolvable.

This, by the way, is one of the best possible ways to troll a nerd.

Depends on the quality of your nerd.

I hung out with CS geeks during the Cube's original peak popularity. I saw quite a few nerds trolled with one rotated corner, or one flipped edge, or two swapped edges.

Many spent a long time before catching on or giving up in frustration

Bullshiat. Within 60 seconds someone who can solve a cube would suspect the cube was misaligned and within 2min even a slow solver would know it was rearranged.

I use a fairly slow algorithm to solve them and I would know in 1.5 minutes easy. People who are serious about it would know much faster than that.
 
2013-09-28 11:23:46 AM

Kuta: That begs the question, what is the hypothetical maximum number of moves to solve a random Rubik's cube?


Ignoring the fact that no questions were begged here, I seem to recall the answer is 18 or 19. It was proven mathematically a couple of years ago.
 
2013-09-28 11:24:16 AM

flondrix: Where can I get a cube with solid colored plastic tiles instead of stickers?


http://lightake.com/detail.do/sku.3x3x3_DaYan_GuHong_Color_Magic_Cub e_ -31167

This looks like the one used in the video, except they removed the plastic center caps (which cover the screws) so the machine is able to turn all 6 sides at once.

Additional info: Dayan is a Chinese manufacturer that makes unofficial puzzle cubes for speedsolving. Their 3x3x3 puzzles (the ones that are functionally similar to Rubik's Cubes) come in several models, in order of release date: Guhong, LingYun, LunHui, ZanChi, and PanShi. They're still working out the bugs with the PanShi model, so if you are willing to spend more on a better one, look for the ZanChi model.

These puzzles in general will turn a lot smoother than your store-bought Rubik's Cube, at or around the same price.
 
2013-09-28 11:31:45 AM

flondrix: Where can I get a cube with solid colored plastic tiles instead of stickers?


Oh wait, you wanted one with tiles, not the one that is pure plastic without stickers. Cubesmith.com sells replacement stickers, but they also sell self-adhesive tiles.
 
2013-09-28 12:46:17 PM

Toquinha: so if you are willing to spend more on a better one, look for the ZanChi model.


Thank you for the information, but you leave me with even more questions:  What is different between one model and the next?  Why are these cubes not legal for competition?  And if the cube is "solid plastic", what are the colored squares if not stickers?  I supposed paint would be almost as bad a stickers--instead of sliding sideways (as my first Rubik cube did) or peeling at the corners, they would just wear off where the fingers made most frequent contact.
 
2013-09-28 06:19:33 PM

gnosis301: Let me know when they make one that, without ever having before seen a cube, take the command, "Make all sides one color," understand the logical error in the statement, infer the correct logic, and then solve the cube.


Even better, after doing all that, the robot calls you a nerd and beats the crap out of you, then steals your beer and your girlfriend and drives off in a pickup truck.  That'll be impressive.
 
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