#Rubiks cube

50 years ago yesterday, a professor in Hungary made a 3d cube to teach his students geometry. It took him a month to solve it. Since then, the Rubik’s cube has been the most sold puzzle of all time, with over 500 million units sold worldwide.

To commemorate this, they made a Rubik’s cube that’s gold or something.

I’m going to expand on the last thread I made. Last thread I talked about ZB, which has 1000+ algorithms. But recently I learned about a more advanced method, called 1LLL, or 1 look last layer. This involves solving the last layer in one algorithm.

It has 4k+ algorithms, and only one person has fully done it. Sure, his recognition sucks ass., and half of his solve is trying to figure out which case it is, but that happens with memorizing that much. He averages around 13 seconds, but if his recognition got better im sure he could easily be sub 9,8,7,etc.

And that’s all of the main stuff, now I’ll go into detail about what 1LLL is.

So in the method CFOP, there are four steps

Cross

First two layers

Then the last two steps solve the last layers

ZBLL is a method in which the first two layers is solved, and if the top side has a t, or a cross, then you do one algorithm to solve the rest of the cube. 1LLL ignores that. And so wether or not you have a t, you can do a case to solve the whole thing.

Is it worth learning? Hell no. Is it cool if you do? Yea

Let me give some backstory before I talk about the main thing

In speedcubing, the first method you learn is the beginners method. Once you learn that and you wanna get faster, you would learn one of three main methods:

CFOP, roux, and ZZ.

CFOP and ZZ both are solving the cubes differently, but they both have a similar method to solve the last step. It is way more complicated and should only be learnt if you wanna know more ways to solve the cube faster.

It’s called ZBLL.

Let’s take a look at CFOP. 4 steps. Solve the cross, finish the first two layers, make the top face the same color, and solve the rest of the cube.

The last two steps have around 80 algorithms. Some as short as a couple moves and some as high as 20+. It took me 1 month to learn it all.

ZBLL combines the last two steps, into one.

It is 493 algorithms, all of them very long. And yet some cubes have learnt it all. Not just learning the notation, but also recognition(using a certain alg for that case.)

I have no idea how they do this without forgetting at least some.

…

and yet even fewer cubers have learnt a better method.

ZB

Which combines the method I just talked about, with another method called ZBLS. 

ZB has 840 algorithms, almost double the previous.

It amazes me how some people have that good of memory plus muscle memory.

And while there are some people that have memorized tens of thousands of digits of pi, I find this more impressive because you have to do recognition plus remembering the algorithm.