PPW2 method

Tsung-Yen Wu (吳宗諺) is currently a junior high school math teacher in Taiwan.

I created the RUP/RUPM/PRUM method of Rubik's Cube in 2018. One day I suddenly felt that the last move was very beautiful. I have an idea to use permutation parity to do it. The pairs can be freely placed and observed, and in the end, all the pieces need to be combined to solve Rubik's Cube. This idea seems to have never been done before, so the 6PP method was created in 2021.

But then I felt that the 6PP method was somewhat unsatisfactory. One day I accidentally felt the existence of Orientation Windows, and I was surprised that the color observed on Orientation Windows would not be affected by the permutation parity of the pair.That said, I found the zero for the twist orientation of the corner. Also, when I created the 6PP method, I knew the special selection method of pairs, and I thought it was a very eye-catching thing. God should have a purpose for such a thing to exist, but after creating the 6PP method, it did not play at the most critical step, and it is not commensurate with its brilliance. That seemed to miss God's intention, and it was this belief that kept me going. Also, using 5 pairs to observe permutation parity is really not easy, and you can place pairs randomly seem to be overdoing it.

Therefore, the PPW method was created.

Later, it was found that the turn on F face of Interchange Move on F was F2, which is very consistent with EO. This again gave me the idea to allow any 2's turns without making EOEdge to limit the way you move, making it closer to a method that completely bundles to pair to restrict your move. Therefore, The PPW2 method was developed. Surprisingly, after allowing any 2's turns, the step of adjustment can still be the same as the original PPW method.

By allowing a wider range of moves, it allowed me to see more clearly the most basic move in PPW — Interchage PAIRs Move, which fully answers the question — what is Interchage PAIRs Move? And this move was only described in a more general way when I created PPW before. Accurately explaining Interchage PAIRs Move is also the most important work when creating PPW2.

Although there is a PPW2/PPW method, the RUP/RUPM/PRUM, 6PP method is still retained, mainly to show how a concept is formed.

Thank God for the gift.