Rubik's Cube impossible states - can you solve them all?

[bcube]

2 swapped edges (or 2 swapped corners):



Corner twist (twist the URF corner clockwise):



Edge flip (flip the RF edge):



Center twist (by 90 degrees):

 

[Michael Wimberly]

I’m able to get the first one on a physical 3x3 but I keep messing it up on the solver in your post. I know how to twist a center by 180 degrees, but not 90.

 

[1973486]

Been a while since I've solved a void cube but I tend to just do an M' and solve it as if the bottom centre is white.

 

[Powstick]

I’m able to get the first one on a physical 3x3 but I keep messing it up on the solver in your post. I know how to twist a center by 180 degrees, but not 90.

Ik how to twist one 90 but it’s 3 PLLs long so… and also it might twist other centers but idk

 

[Michael Wimberly]

Ik how to twist one 90 but it’s 3 PLLs long so… and also it might twist other centers but idk

I do know that if you use 3 Ub perms it will rotate the one on top by 90 degrees, but it will also rotate the one on the right by 90 degrees as well

 

[bcube]

To complete the list, I added a single edge flip simulator to the first post.

I know how to twist a center by 180 degrees, but not 90.

Indeed, there is a twist

Ik how to twist one 90 but it’s 3 PLLs long so… and also it might twist other centers but idk

By saying that you just proved you haven't solved the case on the simulator, hence it is unclear to me why you voted "yes" in the poll.

 

[Renslay]

I had an arrow cube (forgot its proper name) years ago, and yes, I ran into all three problems at some point. The last one is the trickiest, but it's doable (hint: you cannot turn a single center by 90 degrees... You have to do something else!)

And yes, I can also solve a void cube. I feel Roux users have an advantage there.

 

[Fred]

Fun challenges! The first thing I tried on the second one didn't work there, but it ended up helping a lot on the last one.