[Member Intro] Solving the 4x4 Rubik cube

[larrie12]

Yes, it would work with the yellow side up.

It should not matter which color face is facing you

Yeah, I screwed up the algorithm. Sorry about that, but I better learn to input cube structure so I can do it myself instead of asking questions.

 

[larrie12]

I did not make it; I’ve never used such a tool. But it does not matter if the cube in the model is showing different colors. You just need to hold the yellow side up and do the parity algorithm if you have parity.

Yeah, I know I got distracted and screwed it so I better learn how to use alpa.twizzle.net so I don’t have to keep asking questions all the time.

 

[Discomantis]

Yeah, I know I got distracted and screwed it so I better learn how to use alpa.twizzle.net so I don’t have to keep asking questions all the time.

Twizzle is used to display moves on a cube, not to learn algorithms

 

[larrie12]

Twizzle is used to display moves on a cube, not to learn algorithms

So you can’t input any cube configuration? I don’t think you can.

 

[larrie12]

I have all the side solved and top edge pieces too, but I have to swap 4 corners. I can’t find a perm for it, but this is what it looks like.

 

[JDAW6]

I

I have all the side solved and top edge pieces too, but I have to swap 4 corners. I can’t find a perm for it, but this is what it looks like.

t is pll parity

 

[SpeakCuba]

I have all the side solved and top edge pieces too, but I have to swap 4 corners. I can’t find a perm for it, but this is what it looks like.

Hold the green side to your left and do the parity algorithm. If you get a case that you cannot find an algorithm for, then you have parity.

 

[larrie12]

I

t is pll parity

Couldn’t find an algorithm for tll parity, but I see there is one for 2 corner swaps on same side. Maybe if I do it for the 2 other corners it would work.

 

[SpeakCuba]

Couldn’t find an algorithm for tll parity, but I see there is one for 2 corner swaps on same side. Maybe if I do it for the 2 other corners it would work.

Hold the green face to your left and do this alg:

 Twizzle link 

 Setup 

Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2

 Moves 

Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2

This algorithm here is the PLL parity alg. Please right this down so we do not need to always reference this post.

Just do the algorithm once.

 

[larrie12]

Couldn’t find an algorithm for tll parity, but I see there is one for 2 corner swaps on same side. Maybe if I do it for the 2 other corners it would work.

No, this wouldn’t work because I’m not swapping corners. They’re moving in a Z pattern.

 

[JDAW6]

No, this wouldn’t work because I’m not swapping corners. They’re moving in a Z pattern.

The pill parity alg will turn the cube into a solvable case

 

[SpeakCuba]

No, this wouldn’t work because I’m not swapping corners. They’re moving in a Z pattern.

The pill parity alg will turn the cube into a solvable case

What he said ^

Doesn‘t matter what it looks like. Just do that alg and it will make it solvable again.

 

[AdvantageousFrog]

The point of doing the parity algorithm is not to solve the cube immediately. As you have said, there is no algorithm that will directly solve this case. However, after doing the PLL parity algorithm, the cube will be solvable. It won't be solved, but you will be able to solve it with the algorithms you know. That's the point of doing the algorithm. When we do a 4x4 solve, if we get to PLL and we see that the cube has parity, we don't do a single algorithm; we do the parity algorithm first, then continue normally. You should do the same thing. It will set you back a bit, but it's necessary if you want to go forward.

 

[larrie12]

Hold the green face to your left and do this alg:


This algorithm here is the PLL parity alg. Please right this down so we do not need to always reference this post.

Just do the algorithm once.

Ok

The point of doing the parity algorithm is not to solve the cube immediately. As you have said, there is no algorithm that will directly solve this case. However, after doing the PLL parity algorithm, the cube will be solvable. It won't be solved, but you will be able to solve it with the algorithms you know. That's the point of doing the algorithm. When we do a 4x4 solve, if we get to PLL and we see that the cube has parity, we don't do a single algorithm; we do the parity algorithm first, then continue normally. You should do the same thing. It will set you back a bit, but it's necessary if you want to go forward.

OK, I will write it down on my notebook. Thanks

 

[larrie12]

Ok

OK, I will write it down on my notebook. Thanks

I have a case where all the corners are correct, but I need to swap two opposite edge pieces. Do I use this algorithm: Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2? And do I have to have the green or blue edge pieces facing me when I perform the algorithm? I’m so close but the top layer is the hardest because I can’t look up these special cases. Thanks
Larry

 

[OtaMota]

Yes, use the alg.

 

[larrie12]

I have a case where all the corners are correct, but I need to swap two opposite edge pieces. Do I use this algorithm: Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2? And do I have to have the green or blue edge pieces facing me when I perform the algorithm? I’m so close but the top layer is the hardest because I can’t look up these special cases. Thanks
Larry

 

[larrie12]

I think I have to the red or orange side facing me when perform the above algorithm…based on post #229.

 

[OtaMota]

Do it with blue or green. Red and orange work as well, but blue or green will skip a step and solve the cube.

 

[larrie12]

So this would be my last algorithm to solve the RUBIK’S Cube?

Oh wait a minute. This like my case of opposite edge pieces.

Do it with blue or green. Red and orange work as well, but blue or green will skip a step and solve the cube.

Ok, I have green face facing with the blue/edge pair. So I hope this. Does

Do it with blue or green. Red and orange work as well, but blue or green will skip a step and solve the

Do it with blue or green. Red and orange work as well, but blue or green will skip a step and solve the cube.

OMG! It worked! So am I correct in thinking this algorithm works on opposite and adjacent edge pieces?