Message #4135

From: Andrew Farkas <ajfarkas12@gmail.com>
Subject: Re: [MC4D] Physical 2x2x2x2: algorithm that fixes a single 180° twist
Date: Fri, 14 Sep 2018 23:17:23 -0400

I think that’s the best we can do, since there’s no solution below 7 moves
for that case on the Speedsolving wiki
<https://www.speedsolving.com/wiki/index.php/PBL>; that’s probably HTM
<https://www.speedsolving.com/wiki/index.php/Half_Turn_Metric>-optimal.

On Fri, Sep 14, 2018 at 8:13 PM lucas.denhof.58@gmail.com [4D_Cubing] <
4D_Cubing@yahoogroups.com> wrote:

>
>
> Hey everyone, I am the 9th solver of the physical 2x2x2x2 and have
> recently joined this group. I wanted to show you an algorithm I found that
> basically flips only one side of the cube 180˚.
>
> You can see the algorithm here: https://youtu.be/ru_OgVwlfKE
>
> I researched and have just found a quicker way of solving the 3d cube part
> of it by using a simple 2x2x2 solver.
>
> Instead of using this on both sides on both cubes: R’ F R’ B2 R F’ R’ B2
> R2 (36 moves long)
>
> I can now do this: R2 U F2 U2 R2 U R2 (28 moves long)
>
>
> Let me know if one of you finds a way to shorten it even more somehow.
>
> Thanks,
>
> ~Lucas
>
>


"Machines take me by surprise with great frequency." - Alan Turing