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A 30-year quest to find the minimum number of moves needed to solve every one of the billions of configurations for a Rubik's Cube may have ended.
Any scrambled cube can be solved in 20 moves or fewer, researchers claim.
The international team used a bank of computers at Google to help crank through the solutions.
The figure is known as “God's number” because an all-knowing entity would know the optimal number of steps needed to solve the puzzle.
“We now know for certain that the magic number is 20,” Professor Morley Davidson, a mathematician from Kent State University, told BBC News.
However, the majority of solutions take between 15 and 19 moves to solve.
http://www.bbc.co.uk/news/technology-10929159
What about the unravelling of the universe.
The blue print was determined at the Big Bang according to scientists, yet (supposedly) without an operator of any kind, it turned into an aligned system of Galaxies far more complex than Rubik's Cube.
Accordingly, to explain this we either conclude that there is a God who knew the ways to complete the system as we see it, or that it was this one freak chance that just worked and came from nothing which is impossible, or that there are billions of failed universes, and among them one that produced life and order and everything. The one we are in. Even that is weird because such a system of random Big Bangs, still needs a construct of some kind. And they don't pop out of nothing.
Q) What are the chances that one single Big Bang exploded into this great system of systems? Who would believe that, if they really understood it?
A) An atheist.
Hi T8,
It took me 3 days to solve Rubik's Cube, with NO assistance of any kind.
Then after I understood how to solve it no matter how mixed it was
I bought Rubik's Revenge. This one took me 3 weeks to solve.HolyCityBibleCode (The Bible's Code) took me 20 years to crack;
perhaps the Number 20 may have some significance after all?God bless
Ed J (Joshua 22:34)
http://www.holycitybiblecode.orgWhen I was at school I came up with my own method. It involved getting the top layer right (minus one), then finishing the corners.
After that, you got the bottom layer right by placing them one at a time and this usually sacrificed a square on the top layer, but I had one square at the top out of place, so I didn't sacrifice anything.
After I had the top layer and bottom layers complete with the exception of one square each, it was then that I had a number of moves that aligned the last 2 at the same time.
If I was lucky, the middle layer just needed a bit of tweaking, but most of the time, it needed a series of complex moves.That said, I could do the cube in under a minute on a good day.
The method I came up with was to first get all 8 corners correct.
Then the center 6 squares. Then the middle row. Then the top,
minus one square. The one square at the top and the four at
the bottom must then be worked simultaneously to finish it.
Have you tried this method; it doesn't screw up anything?No, I didn't try any other method. I just did it my way, and then gave up and started on beer after that.
OK, I was a teen.My kid has got one in his toy box. I should bring it out and come up with a new method, but time is in short supply these days.
Quote (TimothyVI @ Aug. 12 2010,21:04) I have seen people do it blind folded.
How do they do that?Tim
Hi Tim,Good question!
God bless
Ed J
http://www.holycitybiblecode.orgQuote (TimothyVI @ Aug. 12 2010,21:04) I have seen people do it blind folded.
How do they do that?Tim
They only need to see it initially the rest is a sequence of directional moves no need to look.Just like typing once you know where all the keys are there is no need to look
Quote (bodhitharta @ Aug. 13 2010,07:06) Quote (TimothyVI @ Aug. 12 2010,21:04) I have seen people do it blind folded.
How do they do that?Tim
They only need to see it initially the rest is a sequence of directional moves no need to look.Just like typing once you know where all the keys are there is no need to look
Yeah, that would be the only feasible explanation.
In that case, they would have a number of methods learned, and would apply the correct method upon observation of the cube.Quote (seekingtruth @ Aug. 13 2010,03:00) My solution was to take it apart and put it back together 
Yeah that works. Although I tried to do a cube once, and I just couldn't complete it and it always ended up in a sequence I was unfamiliar with. I then realised someone had taken it apart and not put it back properly.That reminds me of a card game I played once when I was trekking in the Marlborough Sounds (New Zealand). We stayed in this hut (cabin) and there was a deck of card. After some time playing poker, I got 3 queens and thought I should win this hand, but another guy also got 3 queens. So we laid the deck out in order and there was about 7 tens, 6 queens, 2 two's, etc. We left the deck there for the next unsuspecting group of trekkers.
Quote (t8 @ Aug. 13 2010,12:21) Quote (bodhitharta @ Aug. 13 2010,07:06) Quote (TimothyVI @ Aug. 12 2010,21:04) I have seen people do it blind folded.
How do they do that?Tim
They only need to see it initially the rest is a sequence of directional moves no need to look.Just like typing once you know where all the keys are there is no need to look
Yeah, that would be the only feasible explanation.
In that case, they would have a number of methods learned, and would apply the correct method upon observation of the cube.
I stand in awe of anyone that could remember that many
sequences. They would make a fantastic chess player.Tim
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