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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»



68 Comments   (+0 »)
   
View Voting Results: Smartest and Funniest
 
2013-09-27 08:14:12 AM
Great.  Now that's out of the way, get that robot working on peace in the Middle East.
 
2013-09-27 08:31:22 AM

syrynxx: Great.  Now that's out of the way, get that robot working on peace in the Middle East world domination.

/far more likely
 
2013-09-27 10:08:44 AM
He took way more than 15 seconds to map out the first few movements, plus they used a sticker-less Dayan cube, which is illegal under official World Cube Association regulations (I am not making this up).
 
2013-09-27 10:10:48 AM
Well, there goes my idea for slowing down a Terminator.
 
2013-09-27 10:14:10 AM
Extremely similar to my shagging.
 
2013-09-27 10:16:02 AM
Doesn't count. It was done in a foreign language. It only becomes real when done in Merika.
 
2013-09-27 10:16:29 AM
Under a second, except the five minutes to scan it, and all the pre-processing of the moves.  But yea, under a second.

/still never solved it myself.
 
2013-09-27 10:20:14 AM

Toquinha: He took way more than 15 seconds to map out the first few movements, plus they used a sticker-less Dayan cube, which is illegal under official World Cube Association regulations (I am not making this up).


He should have used multiple cameras to capture all of the sides at once, and placed those cameras inside the solving box or even on the turning rods. Also, there's really nothing special about a rubik solving program anymore. Build a robot that simulates human hand structures and can manipulate a real cube with all it's creaky joints and friction, and I'll be slightly impressed.
 
2013-09-27 10:26:19 AM
Call me when the dude doesn't have to take 10 minutes to prep it.

/machine was cool
 
2013-09-27 10:26:44 AM
I am more impressed with the cube not falling apart than the machine itself.  Simple but effective.
 
2013-09-27 10:29:12 AM

ABQGOD: Toquinha: He took way more than 15 seconds to map out the first few movements, plus they used a sticker-less Dayan cube, which is illegal under official World Cube Association regulations (I am not making this up).

He should have used multiple cameras to capture all of the sides at once, and placed those cameras inside the solving box or even on the turning rods. Also, there's really nothing special about a rubik solving program anymore. Build a robot that simulates human hand structures and can manipulate a real cube with all it's creaky joints and friction, and I'll be slightly impressed.


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
 
2013-09-27 10:37:40 AM
That begs the question, what is the hypothetical maximum number of moves to solve a random Rubik's cube?
 
2013-09-27 10:38:37 AM

Glockenspiel Hero: ABQGOD: Toquinha: He took way more than 15 seconds to map out the first few movements, plus they used a sticker-less Dayan cube, which is illegal under official World Cube Association regulations (I am not making this up).

He should have used multiple cameras to capture all of the sides at once, and placed those cameras inside the solving box or even on the turning rods. Also, there's really nothing special about a rubik solving program anymore. Build a robot that simulates human hand structures and can manipulate a real cube with all it's creaky joints and friction, and I'll be slightly impressed.

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


So, are you arguing and making my point at the same time?
 
2013-09-27 10:40:33 AM

Kuta: what is the hypothetical maximum number of moves to solve a random Rubik's cube


A quick search reveals the answer is 20. 20 Moves or less to solve any cube.
 
2013-09-27 10:57:50 AM
was it necessary to scan the 6th side?  (isn't that side known from the other 5?)
 
2013-09-27 11:00:24 AM

Shryke: Extremely similar to my shagging.


How many Farkers are going to your profile hoping you're female?
 
2013-09-27 11:08:00 AM
I think the LEGO mindstorm robot was more impressive.
 
2013-09-27 11:21:48 AM
It bugs me that there's no center spin capability regardless of the fact two side spins accomplished the same thing. ;)
 
2013-09-27 11:23:21 AM

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


No it doesn't.
 
2013-09-27 11:24:10 AM

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


42
 
2013-09-27 11:32:27 AM

wjllope: was it necessary to scan the 6th side?  (isn't that side known from the other 5?)


Good point.  I wonder if 4 sides would be enough to extrapolate the whole cube.  Keep in mind that not all block positions in cube are possible.  For instance, if you force a corner piece to rotate unnaturally, the cube in unsolvable.
 
2013-09-27 12:19:35 PM
It's not necessarily the case that knowing 5 faces allows one to extrapolate the sixth.

For clarity, we know that the cube has six faces, a top, a bottom, and four sides.  The cube consists of 8 corner pieces, 12 edge pieces, and 6 centers (which do not move).   Suppose the bottom layer of the cube contains the 4 edge pieces with a blue face, and suppose none of those four blue faces are on the bottom face (so all four side faces of the cube have a blue square in the center on the bottom).  Any permutation of these edge pieces that maintains the "blue on the sides" will produce the same 5 faces (top and 4 sides) but the bottom face will be different.
 
2013-09-27 12:34:32 PM

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.
 
2013-09-27 12:34:38 PM

Toquinha: He took way more than 15 seconds to map out the first few movements, plus they used a sticker-less Dayan cube, which is illegal under official World Cube Association regulations (I am not making this up).



Worse than that, it's not even a Dayan cube, with the recesses in the center sqaure. Headline is completely wrong. This is barely interesting. Nice project, but nothing amazing happened here.
 
2013-09-27 12:36:15 PM

hyperdex: It's not necessarily the case that knowing 5 faces allows one to extrapolate the sixth.

For clarity, we know that the cube has six faces, a top, a bottom, and four sides.  The cube consists of 8 corner pieces, 12 edge pieces, and 6 centers (which do not move).   Suppose the bottom layer of the cube contains the 4 edge pieces with a blue face, and suppose none of those four blue faces are on the bottom face (so all four side faces of the cube have a blue square in the center on the bottom).  Any permutation of these edge pieces that maintains the "blue on the sides" will produce the same 5 faces (top and 4 sides) but the bottom face will be different.


Good point.
 
2013-09-27 12:45:43 PM

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.


In my experience, this is an ineffective way to troll cubers, because they very quickly figure out that the cube is not in the correct group (as in mathematical group).

It's more accurate to say that when you rotate one of the pieces like this, you put the cube into a different group, one where the "solved" position is not a member of the group.
 
2013-09-27 12:46:24 PM
Haha, I hope the guys that made this see the Lego video and cry themselves to sleep.
 
2013-09-27 12:47:11 PM
Are people still getting cancer and dying from it? Just checking.
 
2013-09-27 01:02:00 PM

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


Not sure what the maximum is, but any solved cube can be sufficiently randomized in seven moves, and subsequently solved in about seven moves. The guy "scrambling" it at the beginning took way too many moves than was necessary.
 
2013-09-27 01:02:54 PM

Myria: 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.

In my experience, this is an ineffective way to troll cubers, because they very quickly figure out that the cube is not in the correct group (as in mathematical group).

It's more accurate to say that when you rotate one of the pieces like this, you put the cube into a different group, one where the "solved" position is not a member of the group.


In my experience, all cubes are in unsolvable states. :(
 
2013-09-27 01:17:39 PM

Ishkur: any solved cube can be sufficiently randomized in seven moves


I had somehow remembered that seven is also the 'sufficient minimum' for the number of times to shuffle a deck of cards...
LGT PDF
but there the asymptotic result is 1.5*log_2(52) = 8.55... so now i'm confused why sites that reference this paper say 7 is enough, but whatever.... cheers
 
2013-09-27 01:26:54 PM

wild9: I think the LEGO mindstorm robot was more impressive.


I second. It didn't have to be manually rotated and scanned or have to use a modified cube. That and made from lego which limits parts and motors speeds.
 
2013-09-27 01:27:59 PM

Glockenspiel Hero: ABQGOD: Toquinha: He took way more than 15 seconds to map out the first few movements, plus they used a sticker-less Dayan cube, which is illegal under official World Cube Association regulations (I am not making this up).

He should have used multiple cameras to capture all of the sides at once, and placed those cameras inside the solving box or even on the turning rods. Also, there's really nothing special about a rubik solving program anymore. Build a robot that simulates human hand structures and can manipulate a real cube with all it's creaky joints and friction, and I'll be slightly impressed.

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


Not everything's a fight, tiger.
 
2013-09-27 01:28:34 PM
That last comment was meant for ABQGOD's response to you. Do ignore.
 
2013-09-27 01:29:09 PM

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

No it doesn't.


Yes, it does.

Usage dictates definition, not vice versa.

/"Also, many terms have multiple meanings." ~Ric Romero
//dealwithit.gif


wjllope: I had somehow remembered that seven is also the 'sufficient minimum' for the number of times to shuffle a deck of cards...


Huh. I'd always heard "nine" but never bothered to research it (until now). Seven it is!
 
2013-09-27 01:31:54 PM

ArcadianRefugee: Huh. I'd always heard "nine" but never bothered to research it (until now). Seven it is!


8.55 is a lot closer to your 9 than it is to the folklore 7 that I had heard! cheers
 
2013-09-27 01:41:02 PM

wjllope: I had somehow remembered that seven is also the 'sufficient minimum' for the number of times to shuffle a deck of cards...


They're going to be similar since the number of random variables is almost the same: 48 squares vs 52 cards.
 
2013-09-27 01:51:56 PM

dfenstrate: Kuta: what is the hypothetical maximum number of moves to solve a random Rubik's cube

A quick search reveals the answer is 20. 20 Moves or less to solve any cube.



Being a dick to the OP, I'd say infinite. You can do as many moves as you want before solving a cube.

a better question is, how high can the minimum number of moves to solve a rubiks cube be?
 
2013-09-27 01:55:21 PM
A few years ago, there was a thread on Rubik's Cube tournaments.  I pointed out that I was friends with one of the guys who competed, and actually held the World Record, despite not winning the championship (the rankings are based on a few solves averaged together, and he just had one really good one.)

Nobody believed me.  It was really weird.  Like, I could say that I went to high school with some baseball player, and people would be on board.  There's that constantly resurfacing (and amazing) story about Joe Buck pissing in someone's shoes, and that's generally believed.

But I say I know a Rubik's Cuber and everyone lost their flipping minds.  I still don't know what happened.
 
2013-09-27 02:02:06 PM
First simple machine to solve a Rubik's cube:
img.fark.net
 
2013-09-27 02:05:15 PM

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


If you want to have a similar experience every single day, just go ahead and pay the $5/month.
 
2013-09-27 02:15:01 PM
The stolen LiveLeak video is 1:56 long. They trimmed it down from 2:27 and got rid of a lot of the source info. The original is from Dec 19, 2011.

YouTube:
img.youtube.com
CubePrime - Robô que resolve o Cubo Mágico em menos de 1 segundo!
by Renan Cerpe·- 95,091 views
Uploaded on Dec 19, 2011
- Sobre o projeto: http://www.cubeprime.com.br
CubePrime é a primeira versão de um robô que é capaz de solucionar o famoso Cubo Mágico em menos de 1 segundo! Ele utiliza uma Webcam para fazer a leitura do cubo e um software especial para desvendar o mistério muito rápido! Desenvolvido no SENAI de Campinas pelos alunos de mecatrônica
- Fornecimento dos principais equipamentos por Kalatec http://www.kalatec.com.br

CuboVelocidade - Tudo sobre o Cubo Mágico:
http://www.cubovelocidade.com.br
http://www.youtube.com/cubovelocidade
http://www.facebook.com/cubovelocidade
http://www.twitter.com/cubovelocidade
Conecte-se com Renan Cerpe:
http://www.facebook.com/renancerpe
http://www.twitter.com/renancerpe
http://www.instagram.com/renancerpe
http://www.renancerpe.com.br
Loja de puzzles Cuber Brasil:
http://www.cuberbrasil.com
http://www.facebook.com/cuberbrasil
http://www.twitter.com/cuber_brasil
Portal de vídeos YouCube:
http://www.youcube.com.br
http://www.facebook.com/portalyoucube
- Obrigado por assistir e não se esqueça do joinha ;)
 
2013-09-27 02:28:07 PM

Mr. Richard Smoker: Haha, I hope the guys that made this see the Lego video and cry themselves to sleep.


I just watched the lego video, and burst out laughing.
 
2013-09-27 02:29:51 PM
But how long does it take to solve for love?
 
2013-09-27 02:44:46 PM
Where can I get a cube with solid colored plastic tiles instead of stickers?
 
2013-09-27 03:09:19 PM
Big deal. I wrote a computer program in an hour that could solve a Rubik's cube in WAY under a second.

If I built robots, I could do this too.
 
2013-09-27 03:18:11 PM

Sqrxz: Big deal. I wrote a computer program in an hour that could solve a Rubik's cube in WAY under a second.

If I built robots, I could do this too.


Wipe the Cheetos dust off of your fingers and get to it.
 
2013-09-27 03:31:05 PM
OK, so I found the DaYan site, but they offer several different models of stickerless cube without out giving sizes or other info that would distinguish one from another.  What is the difference between GuHong, ZanChi, and PanShi cubes?
 
2013-09-27 03:45:03 PM
Least. Impressive. Cube-Bot. EVAR.  It can't map and solve on the fly or even use a standard rubiks cube.
 
2013-09-27 06:05:38 PM
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.
 
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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