• Bryan's sequences
The sequences I have here are those I use to solve a cube.
I got my cube when I first went to university back in October 1980.
It took me about a week to come up with some sequences to solve it.
I never did understand the book I got given for Christmas that year,
and was just happy to impress everyone I could solve it.
I never got into speed-cubing, but could do it in about a minute,
it was important to me to have just a few sequences to remember.
Name | Sequence | Comment |
swap | LB | L D' L' D L D' L' |
These 4 sequences are mirrors and reverses of each other.
Used to get layer 2 done, once layer 1 is complete.
Although I complete layer 1 with the corner purposely rotated but in place,
as these sequences rotate the front top corner while they swap the bottom-side
edge piece with the front-side edge piece.
I have to choose which of the 4 mirrors to do, based on which colors are where.
|
LF | L D L' D' L D L' |
RB | R' D R D' R' D R |
RF | R' D' R D R' D' R |
kick | L | L D L' D L D D L' |
These 2 sequences are mirrors.
Used on solving the bottom/last layer.
They swap 3 edges down there.
When the two are back-to-back, they rotate just 2 bottom layer corners.
|
R | R' D' R D' R' D D R |
3 Corners | L | L D' R' D L' D' R D |
These 2 sequences are mirrors.
Used on the bottom layer to swap 3 corners around.
|
R | R' D L D' R D L' D' |
6-to-Cross | R' B' D' B D R |
Used on solving the bottom/last layer.
Turning what looks like a 6-o-clock into a cross.
It also turns blank into 9-o-clock, and 9-o-clock into 6-o-clock.
There is apparently a similar sequence that does 9-o-clock directly to the cross,
but I don't want to bother remembering more sequences,
when repeating this one does what I need.
|
So I really have just 4 sequences to remember.
I've seen sequences that do things that I have to do sequences twice
(or have to do two of mine) to do the same as their one sequence,
but I'm happy to remember the few sequences I came up with.
You might notice that sequences generally move just two surfaces,
I find those are easiest to do, as I have two hands.
Sequences like 6-to-cross I find awkward to do,
but it's what I worked out did the job, and I guess I'm stuck in my ways.
I generally take about 110 moves to solve a cube using my sequences.
I hear the speedcubing people usually do it in 50 or 60 moves.
But I do call the same move twice "2 moves", and I write something like
"D D "
instead of
"D² ",
so maybe I have 10 or so less moves when I solve it, if that's the case.
I read that there is a great computer-necessary algorithm
that takes between 15 and 20 moves to solve a cube.
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