AUF method after PLL

It is important to minimize the time for AUF. You should know if a quarter/half turn is necessary or not before ending PLL process, and carry out AUF without examining the color of the faces of cube. It can be said that AUF is a part of PLL process.

I think there are 2 moments when to know a quarter/half turn is necessary or not. One is to gather the necessary information before starting PLL, and the another is to do it during turning PLL (just before the end).

I chose the first one. Luckily to say, the color of the key element for PLL decision (bar, headlight, V mark) will be the color of the face of that position after PLL. So, just enough to exercise the following points.

1) Memorize which PLLs correspond to the above mentioned case.

2) Memorize which face the color of the key element will be, in regard to the 9 PLLs which are not the above item 1).

3) Before PLL process, memorize the color of the key element and calculate while executing PLL which amount of turn is necessary, a quarter (U/U’), half (U2) or nothing, comparing it with the center color of the face of the destination of the key element.

4) After finishing PLL, carry out AUF without pause, based on the result of 3).

That’s all!

The following list shows the 9 PLLs of above item 2).

• Ua perm (second algorithm): a bar color of F-face will be B-face.
• F perm (second): a bar color of F-face will be L-face.
• Ja perm (second): a bar color of F-face will be L-face.
• Jb perm (first): a bar color of L-face will be B-face.
• Jb perm (second): a bar color of F-face will be R-face.
• Ra perm: a headlight color of L-face will be B-face.
• Rb perm: a headlight color of L-face will be F-face.
• Z perm: a headlight color of F-face will be B-face.
• Nb perm: a block color of F-face will be R-face.

There is another way how to decide AUF. You can memorize the piece whose color will be the color of the face of that position. In this way it is not necessary to memorize where the “destination” is.

For example, in case of Ja perm (first algorithm), the color of the block (FU edge & FUR corner) of F-face will be fixed there. So, you can calculate the necessary amount of turn for AUF, comparing it with the center color of F-face.

The problem of this method is that it is necessary to memorize the corresponding piece position for all PLLs and to look at that piece in addition to the key element if both are not in the same position. You may need time to move your eyes, even it is small.