Qiyi 2x3x3 weird move

[qwr]

After putting it off for a long time I finally solved my qiyi 2x3x3 cuboid by using the half turn 3x3 algs I developed here plus my 2x2x3 cuboid algs I figured out. However the reason I bring up the manufacturer is that this cuboid has a weird move that doesn't really make sense in a traditional cuboid. While traditionally you could only do M2 moves when holding the cuboud with 3x3 face flat, this highly unintuitive move allows M U2 M kind of moves where the center is fixed to one of the rotating layers. See the picture.

I wonder if this move is intentional or not because I haven't seen anyone mention this about the domino cuboid. You could do a move like this on 3x3 but I'm pretty sure it's not used in domino reduction. It actually lets you do U perms which I'm not sure is possible with normal cuboid moves. (edit: it is possible by setting up the edge not opposite to the others to a 3-edge cycle, like M2 U or M2 U' setup moves)

 

[Mo_A2244]

After putting it off for a long time I finally solved my qiyi 2x3x3 cuboid by using the half turn 3x3 algs I developed here plus my 2x2x3 cuboid algs I figured out. However the reason I bring up the manufacturer is that this cuboid has a weird move that doesn't really make sense in a traditional cuboid. While traditionally you could only do M2 moves when holding the cuboud with 3x3 face flat, this highly unintuitive move allows M U2 M kind of moves where the center is fixed to one of the rotating layers. See the picture.

I wonder if this move is intentional or not because I haven't seen anyone mention this about the domino cuboid. You could do a move like this on 3x3 but I'm pretty sure it's not used in domino reduction. It actually let's you do U perms which I'm not sure is possible with normal cuboid moves.

I am not expert.. But that looks like a robot.
In terms of the logical alg stuffs behind this I have no idea what you are on about and I cannot help you there.

But it still look weird and somewhat unintentional

 

[qwr]

I am not expert.. But that looks like a robot.
In terms of the logical alg stuffs behind this I have no idea what you are on about and I cannot help you there.

But it still look weird and somewhat unintentional

what I'm saying is that in a normal twisty puzzles we expect the corner to be blocked by the center since it's misaligned, but due to the mechanism that keeps the invisible E layer aligned, the corner is hollowed out and actually lets the center pass behind the corner (if you know about the pandora's 3x3 shapemod then you know it's quite unintuitive)

 

[Mo_A2244]

what I'm saying is that in a normal twisty puzzles we expect the corner to be blocked by the center since it's misaligned, but due to the mechanism that keeps the invisible E layer aligned, the corner is hollowed out and actually lets the center pass behind the corner (if you know about the pandora's 3x3 shapemod then you know it's quite unintuitive)

Ah ok. Still looks quite unintentional and as you described it.. "weird move"
And I don't think that's possible on a regular cuboid puzzle but can't say much seeing as though I am inexperienced with cuboids

 

[EngiNerdBrian]

There was some discussion about this on the layer by layer podcast. I had no idea the puzzle could even make that move until I heard the episode. I also have the Qiyi. See post #104

I will have to go play with mine some more. I do recall this move not being possible on other cuboids but it did allow me to do some interesting/unique permutations on the top/bottom faces!

The Layer by Layer Podcast

Average: DNF [/SPOILER]

www.speedsolving.com

 

[qwr]

I was messing around and I found M' U2 M (when the center is not brought along) is the inverse of U2 (F2 R2 U2 R2)2 and M' U2 M2 U2 M' is equivalent to (M2 F2)2 so I don't think any impossible states are possible with the weird slice move. (Depending on which side you hold on top, the U2 acts like a U2 or u2 because one side takes the center with it during U2 moves). M' (U2 M2)2 U2 M' is also a 3-cycle and M' (U2 M2)3 U2 M' returns the cuboid to its original state.
It does suggest that U perms like M2 U M U2 M' U M2 are possible just by setting up the edge 3-cycle which I guess I already knew.