[Member Intro] Solving the 4x4 Rubik cube

GloopyGum said:
Buddy I've literally reconstructed the exact state of your cube here. Just follow the directions under the "Moves" exactly and you'll be done. I don't see any way you don't solve this thing.

alg.cubing.net

alg.cubing.net

alg.cubing.net

Oh by the way set the speed to 0.1x and start with the blue/green part facing you
Click to expand...
Ah, i wasn’t able to put 2 and 2 together. My bad and I am very sorry Larry. I tried reconstructing you case on my 4x4 but got a bit confused. @GloopyGum’s solution should work given you havent touched the cube
 
GloopyGum said:
Thank God, now do the moves please. They're shown right in front of you
Click to expand...
I definitely will. I will have to remember your terminology so I won’t screw up! Will work when I get some free time. The only thing is I don’t understand where the algorithm comes from so I can’t do by myself
 
larrie12 said:
I definitely will. I will have to remember your terminology so I won’t screw up! Will work when I get some free time. The only thing is I don’t understand where the algorithm comes from so I can’t do by myself
Click to expand...
The 2R2 just means turn the inner right layer twice, it's shown on the simulation

The first part of the solution is just the PLL parity alg, I recommend you memorize it
The second part is an R perm. I doubt you know full PLL, so don't worry about it; it's just a more advanced way of solving last layer. After doing the PLL parity, you could just do your normal way of solving 3x3 instead of the R perm
 
GloopyGum said:
The 2R2 just means turn the inner right layer twice, it's shown on the simulation

The first part of the solution is just the PLL parity alg, I recommend you memorize it
The second part is an R perm. I doubt you know full PLL, so don't worry about it; it's just a more advanced way of solving last layer. After doing the PLL parity, you could just do your normal way of solving 3x3 instead of the R perm
Click to expand...
Yes, I understand 2R2, but I can’t identify what makes the cube a PLL parity alg. Is it having three blue colors in a row adjacent to three green colors in a row on the all yellow top? So far I understand the reason for the move up till now.
 
larrie12 said:
Yes, I understand 2R2, but I can’t identify what makes the cube a PLL parity alg. Is it having three blue colors in a row adjacent to three green colors in a row on the all yellow top? So far I understand the reason for the move up till now.
Click to expand...
It’s because there is no possible single PLL algorithm that can solve your case as 2 opposite edges are swapped, a situation impossible on a 3x3. Therefore, as 4x4 has 2 piece edges, these can be swapped with a parity algorithm, turning it into a valid PLL case
 
larrie12 said:
Yes, I understand 2R2, but I can’t identify what makes the cube a PLL parity alg. Is it having three blue colors in a row adjacent to three green colors in a row on the all yellow top? So far I understand the reason for the move up till now.
Click to expand...
After you have solved your corners as well as the edge in the back, check how many edges are left.

If you have 2 edges left, do PLL parity.

If not, you do not need to do PLL parity.

The reason why is not important to solving the 4x4. It is very complicated.
 
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