[Member Intro] Solving the 4x4 Rubik cube

[larrie12]

 Twizzle link 

 Setup 

Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2

 Moves 

Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2

I now have 2 adjacent edge pairs swapped and only 1 corner correct.

 

[CoderGuru]

I now have 2 adjacent edge pairs swapped and only 1 corner correct.

If you Send all the sides I can give you an algorithm to solve the cube

 

[larrie12]

I now have 2 adjacent edge pairs swapped and only 1 corner correct.

Here’s the other side.

 

[CoderGuru]

Here’s the other side.

If this is the correct case(please check and let me know, I may be wrong), then this is what to do

 Twizzle link 

 Setup 

x2 R U R' U' R' F R2 U' R' U' R U R' F'

 Moves 

R U R' U' R' F R2 U' R' U' R U R' F'

 

[larrie12]

I now have 2 adjacent edge pairs swapped and only 1 corner correct.

I think I can use this algorithm to solve the two blank edge pairs: r U2 x r U2 r U2 r' U2 l U2 r' U2 r U2 r' U2 r' correct?

 

[CoderGuru]

I think I can use this algorithm to solve the two blank edge pairs: r U2 x r U2 r U2 r' U2 l U2 r' U2 r U2 r' U2 r' correct?

No, that is when the top face is unsolvable. Forget about that algorithm now, as it isn’t for the current situation. Instead solve like a 3x3, and in case the cube is unsolvable normally, let us know

 

[larrie12]

B

No, that is when the top face is unsolvable. Forget about that algorithm now, as it isn’t for the current situation. Instead solve like a 3x3, and in case the cube is unsolvable normally, let us know

Let me think on it a couple of minutes and I’ll get back to you.

 

[larrie12]

B

Let me think on it a couple of minutes and I’ll get back to you.

I don’t have any 3x3 algorithms to switch two adjacent edge pieces?

 

[larrie12]

If this is the correct case(please check and let me know, I may be wrong), then this is what to do

 Twizzle link 

 Setup 

x2 R U R' U' R' F R2 U' R' U' R U R' F'

 Moves 

R U R' U' R' F R2 U' R' U' R U R' F'

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

 

[SpeakCuba]

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

Depending if you get that specific case.

 

[larrie12]

I think I can use this algorithm to solve the two blank edge pairs: r U2 x r U2 r U2 r' U2 l U2 r' U2 r U2 r' U2 r' correct?

Depending if you get that specific case.

I think I have to solve the corners first. Only one is correct and two adjacent edge pairs need to be swapped.

 

[SpeakCuba]

I think I have to solve the corners first. Only one is correct and two adjacent edge pairs need to be swapped.

You could post a picture of the cube.

 

[larrie12]

You could post a picture of the cube.

It’s on post #79 and #81

 

[SpeakCuba]

It’s on post #79 and #81

Thanks. You have parity, you need to do the parity algorithm first, then you can do one more algorithm to solve the whole cube.

 

[AdvantageousFrog]

Hold the blue side in front with yellow on top and do this algorithm: R U R' U' Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2 U' R U' R'
After that, you can solve it like a 3x3.

 

[larrie12]

Thanks. You have parity, you need to do the parity algorithm first, then you can do one more algorithm to solve the whole cube.

I see there is a parity algorithm for 2 opposite edge pairs, I don’t see anything for adjacent edge pairs. Would you show the two algorithms I need?
Thanks,
Larry

 

[SpeakCuba]

I see there is a parity algorithm for 2 opposite edge pairs, I don’t see anything for adjacent edge pairs. Would you show the two algorithms I need?
Thanks,
Larry

Just hold the “headlights” to your right, (headlights shown in picture) and then do this algorithm:

Algorithm:

 Twizzle link 

 Setup 

Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2

 Moves 

Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2

 

[CoderGuru]

I see there is a parity algorithm for 2 opposite edge pairs, I don’t see anything for adjacent edge pairs. Would you show the two algorithms I need?
Thanks,
Larry

You do the opposite algorithm. Then send a picture and we’ll give you the next one

 

[AdvantageousFrog]

I see there is a parity algorithm for 2 opposite edge pairs, I don’t see anything for adjacent edge pairs. Would you show the two algorithms I need?

Hold the blue side in front with yellow on top and do this algorithm: R U R' U' Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2 U' R U' R'

That swaps two adjacent edges, but it doesn't really matter which edges you swap, it will be solvable if you do the parity algorithm.

 

[larrie12]

You do the opposite algorithm. Then send a picture and we’ll give you the next one

This one: [ 2R2 U2 2R2 u2 2R2 2U2 ] ?