Message #4110

From: Luna Harran <scarecrowfish@gmail.com>
Subject: Re: [MC4D] 2x2x2x2: mini-puzzle "twisty stacky 2^3"
Date: Mon, 03 Sep 2018 00:16:03 +0100

CORRECTION. The pure face swap is M S R2 F2 R2 Y’.

~Luna

On Mon, 3 Sep 2018, 00:12 Luna Harran, <scarecrowfish@gmail.com> wrote:

> Solution outline (SPOILERS):
>
> M S effectively swaps U/D with the outside corners. I will call this the
> face swap. M S R2 U2 R2 Y’ would do this purely.
>
> I will call the outside corners O.
>
> Therefore,
>
> 1. Use the face swap plus general 2x2 methods to orient purple on U/D.
> Guimond is good for this.
> If you find yourself with one corner misoriented, face swap that one
> corner to O, and use it to misorient another corner to set up a solvable
> case. Alternatively, use Marc’s monoflip.
>
> 2. Face swap the purple to O.
>
> 3. Solve like a 2^3.
>
> As far as I know, this always works. Feel free to suggest any
> optimisations.
>
> ~Luna
>
> On Sun, 2 Sep 2018, 06:53 Melinda Green melinda@superliminal.com
> [4D_Cubing], <4D_Cubing@yahoogroups.com> wrote:
>
>>
>>
>> How clever you are, Marc! That’s a neat little puzzle. Some questions
>> immediately come to mind:
>>
>> - Is "twisty stacky 2^3" the name or the description?
>> - Have you solved it?
>> - Does it have any relation to the 2^4 or any other puzzles? Your
>> monoflip seems to hint at such a thing.
>> - How does the difficulty compare to both the 2^3 and the 2^4?
>> - Exactly how useful is it as a stepping stone to the full puzzle? I
>> love how the puzzle currently doubles as a simple take-apart puzzle for
>> young children, and is probably where even active cubers should start
>> simply to get more familiar with the topology. Your puzzle may fit very
>> nicely in difficulty between take-apart and full puzzle.
>> - When solving this puzzle, can it be easily reduced to a pure 2^3,
>> or are the restacking moves more integral? And does that even matter?
>>
>> The last question will probably take some time to answer, but perhaps you
>> or other list members will be able to inform the other questions.
>>
>> What a nice little bonus puzzle!
>>
>> -Melinda
>>
>> On 9/1/2018 11:21 AM, Marc Ringuette ringuette@solarmirror.com
>> [4D_Cubing] wrote:
>>
>> Hi, 4D puzzlers!
>>
>> If you already have Melinda’s 2x2x2x2, then you can easily try this fun
>> mini-puzzle.
>>
>> Take half of your 2x2x2x2 puzzle (I put the pink-purple corners out, set
>> aside the pink half, and use the purple half). This is the solved state.
>>
>> The puzzle is called the "twisty stacky 2^3", and the rules are as
>> follows. The puzzle can be face-twisted like a 2^3 Rubik, plus you can
>> make any of the three restacking moves E, M, and S. Scramble and solve!
>>
>> Here are two YouTube videos – a brief intro, and then a demo of my
>> monoflip (yes, it has one!) for the puzzle.
>>
>> 30 Intro to twisty stacky 2^3 1m33s https://youtu.be/IyJ_QdT0C5U
>> 31 Monoflip for twisty stacky 2^3 1m52s https://youtu.be/IFV4tVchH8U
>>
>> This cute little puzzle is a lot easier than the full 2x2x2x2, and yet
>> its pieces still share the 12 possible orientations of the pieces of the
>> full puzzle. I find it to be a useful training exercise for the larger
>> puzzle, as well as being fun to play with.
>>
>> Enjoy!
>> Marc
>>
>>
>>
>>
>>
>> ————————————
>> Posted by: Marc Ringuette <ringuette@solarmirror.com> <ringuette@solarmirror.com>
>> ————————————
>>
>>
>> ————————————
>>
>> Yahoo Groups Links
>>
>>
>>
>>
>>
>>
>
> On 2 Sep 2018 06:53, "Melinda Green melinda@superliminal.com [4D_Cubing]"
> <4D_Cubing@yahoogroups.com> wrote:
>
>
>
> How clever you are, Marc! That’s a neat little puzzle. Some questions
> immediately come to mind:
>
> - Is "twisty stacky 2^3" the name or the description?
> - Have you solved it?
> - Does it have any relation to the 2^4 or any other puzzles? Your
> monoflip seems to hint at such a thing.
> - How does the difficulty compare to both the 2^3 and the 2^4?
> - Exactly how useful is it as a stepping stone to the full puzzle? I
> love how the puzzle currently doubles as a simple take-apart puzzle for
> young children, and is probably where even active cubers should start
> simply to get more familiar with the topology. Your puzzle may fit very
> nicely in difficulty between take-apart and full puzzle.
> - When solving this puzzle, can it be easily reduced to a pure 2^3, or
> are the restacking moves more integral? And does that even matter?
>
> The last question will probably take some time to answer, but perhaps you
> or other list members will be able to inform the other questions.
>
> What a nice little bonus puzzle!
>
> -Melinda
>
>
> On 9/1/2018 11:21 AM, Marc Ringuette ringuette@solarmirror.com
> [4D_Cubing] wrote:
>
> Hi, 4D puzzlers!
>
> If you already have Melinda’s 2x2x2x2, then you can easily try this fun
> mini-puzzle.
>
> Take half of your 2x2x2x2 puzzle (I put the pink-purple corners out, set
> aside the pink half, and use the purple half). This is the solved state.
>
> The puzzle is called the "twisty stacky 2^3", and the rules are as
> follows. The puzzle can be face-twisted like a 2^3 Rubik, plus you can
> make any of the three restacking moves E, M, and S. Scramble and solve!
>
> Here are two YouTube videos – a brief intro, and then a demo of my
> monoflip (yes, it has one!) for the puzzle.
>
> 30 Intro to twisty stacky 2^3 1m33s https://youtu.be/IyJ_QdT0C5U
> 31 Monoflip for twisty stacky 2^3 1m52s https://youtu.be/IFV4tVchH8U
>
>
> This cute little puzzle is a lot easier than the full 2x2x2x2, and yet
> its pieces still share the 12 possible orientations of the pieces of the
> full puzzle. I find it to be a useful training exercise for the larger
> puzzle, as well as being fun to play with.
>
> Enjoy!
> Marc
>
>
>
>
>
> ————————————
> Posted by: Marc Ringuette <ringuette@solarmirror.com> <ringuette@solarmirror.com>
> ————————————
>
>
> ————————————
>
> Yahoo Groups Links
>
>
>
>
>
>
>
>