They are allowed to look at it before they start solving it, either until they feel that they know where everything is, or a set amount of time.
For a very skilled person with the cube, a single look is all they need before the know where every little piece is going to be after each turn.
These people are also very good with their hands and fingers, and can easily turn all sides with a small flick of their fingers, and rotate the cube very precisely to where they need it without looking.
The only reason that the record for blindfolded vs non-blindfolded has a 23 second difference is because they do it slower in order to make sure that they don't make a single mistake, since that one mistake literally ruins everything.
The reason it takes so long to do it with your feet is because unlike hands, feet don't have opposable thumbs and are not designed to be able to grip things, and toes lack the ability to do small and precise movements like fingers can, hence actually twisting a side can be very, very complicated.
.... If it's proven mathematically, it's proven mathematically. Doesn't mean everyone will be able to see it instantly, there are longer ways that are easier.
Well by doing the exact algorithm shown, I was not able to solve it. Can you bring up the mathematical proof so I can look at it because by doing it it isn't working.
The example shown is (of course) for that specific cube.
It has been mathematically proven that every combination has it's own set of 20 moves which will be able to solve it.
Each separate orientation of the cube has a very specific 20- move combination that will solve it. The solution shown in the content will only work for that specific orientation of the cube (and do not try to replicate it, as the other three sides CAN be different even if three sides are the same). It is likely impossible to know every single 20- move combination to solve the cube from any orientation, but it is very easy to memorize algorithms that can solve the cube in a few moves from a certain, easily attainable, orientation.
Nope, it's what it says. Scramble it any way out of the 43 quintillion combinations, then if you solve it in the fastest way possible it will never take more than 20 moves.
Yeah, somebody did **** up. You.
>sold to 350 million people, same number as JK who sold 350 million copies
>played with by 1/5 the worlds population
>"Hey Joe, I know you don't own a Rubik's cube, but I'm borrowing Stacey's right now, if you want to try to solve it. You won't actually own it, so it won't count for sales, but you'll get to play with it, so it'll count towards that."
Like the comment below you, I too have been trying with a completely scrambled rubik's cube. It doesn't, or there's something not included in those instructions that we're missing.
i got it in the 20 steps but realized that steps that have the arrow in a perfect half circle means to do 180 degree turn... that or i just got lucky....
There are actually more than one solved states. The middle pieces can be rotated, and still be technically correct. If you have a cube with graphics on it you can see it really easily.
so about a year ago i decided i wanted to master the cube. leaned it within an hour by using youtube. took me about 3 minutes every time. then i trained and i got down to about 40 seconds per try. now I don't solve it as much, actually the only time i use it, is when i'm on the crapper.
over and out they call me **** solver