CFOP PASCAL'S Translation
Method « PASCAL »
(Placement Arêtes Sommets Centres par Algorithmes Limités)
it's a mix of
"CFOP Fridrich Intermediate" + basic method + simple tips.
it takes place in 5 steps:
STEP 1 :
do 1 perfect cross and then place
(summits) + (the middle slice edges) at the same time: F2L
STEP 2: Orient the Edges
STEP 3: Place the Edges
STEP 4: Orient Summits
STEP 5: Place the Summits
this step is essentially intuitive.
is to first make a perfect cross (Cross)
to be fast, it is interesting to be able to realize this cross,
on the lower side, or if not, on the left side of the cube.
it requires to know, by heart, the normal position of the colors of the cube.
because we must never reposition the cross during construction,
when we add one of these branches ... (it's a habit to take)
for motivated people ...
It is interesting to be able to make this cross of any color.
it's not as simple as it seems!
the location in the space, of each piece of the cube compared to the others,
becoming much more delicate in the rest of the resolution.
in short, to make the perfect cross is simple,
but it's a lot harder to do it
optimized, that is to say, quickly in a few movements.
ALWAYS less than 10 (usually 7)
after this first cross ...
the F2L (First 2 Layers)
It's about placing at the same time
the vertices around the cross and the edges of the middle slice
as for the cross, it's very intuitive.
with a little habit it becomes VERY simple.
below all possible cases.
(formulas can not be learned, they must come naturally, it's easy enough!)
in case of difficulty on the 1st STEP
there are plenty of descriptions on the net
but for me the best on this phase and all the rest of the cube
Xavier Hornet
also, to progress
the videos of
Clément Cherblanc, Victor Colin, Andréa et Valentin...
END of STEP 1 - last F2L
the latter F2L can advantageously be placed with an "Edge Control".
the goal being to allow to systematically
directly the cross, half or totally oriented (orientation of the edges)
Edge Control is only interesting if it's faster than a classic F2L
followed by the orientation of the edges, essentially, in 4 + symmetrical cases.
STEP 2 (EDGES Orientation)
the cross is either totally oriented, or half, and in this case
2 elementary and very fast algorithms.
STEP 3 (Placing the EDGES)
the trick is to achieve this step
while preparing the next step (Summits Orientation)
GENERAL CASE 65% of cases
there are only 2 algorithms to know
the cross being oriented, it is necessary to position the cube as indicated, either :
2 edges OK at the top and 2 bad at the bottom, to be reversed
spot where are the yellow facets of the summits
there must be, AT LEAST ONE, as in the drawing
then do (73% of cases) : RU2R'U'R U'R'
if there is no Summit with a yellow facet as in the diagram.
then do (27% of cases) : y L'U2 L2UL2UL2 U2L' *
(*also the algorithm y’ R'U2RUR'UR shorter, works for 25 out of 26 cases )
we are in the final with the OK Cross, the placement step of the Edges is completed,
but also :
AT LEAST 1 SUMMIT well oriented
important advantage :
2 algorithms only to know,
which are very short and very fast, with very easy tracking
it's a difference from what's usually done,
when we first realize all orientations and then all placements,
because the algorithms are then
more numerous and less rapid,
the identification is more difficult,
and the orientation of the summits is more complex (7 cases instead of 5).
SPECIAL CASE 35% of cases
in case the 2 OK edges are positioned as shown below:
You have to do the previous algorithms twice, so it's a little longer.
BUT, there is also a powerful trick,
which consists in this case, not to place the edges immediately,
but just after Summits Orientation while learning
only 5 algorithms (F, Na, Nb, T, Z).
STEP 4 (Orientation of the SUMMITS)
5 easy and fast cases.
although there are many others,
it's important to use these algorithms,
because they all preserve the Placement of the Edges
There may be, VERY infrequently, 1 CASE WITHOUT SUM TOP WELL ORIENTED.
do then 1 or 2
STEP 5 (Placement of the SUMMITS)
last step, simple too.
General Cases : Special Case :
(if no Summit OK, do 1 of the 2 algorithms) (4 summits that move in X)
if no summit is well placed, do 2 times the general case
the cube is solved !
remark on the method
it is not revolutionary, but I have not found it described anywhere.
it is simple and relatively effective.
more than "Intermediate Fridrich"
and identical to
"Fridrich Orientation in 2 steps + Placement in 1 step"
but with
a much easier tracking
and a lot less algorithms
This is the most powerful solution SIMPLE METHODS
the algorithms studied all come from FRANCOCUBE
the MEDIAN is closer to the reality of the Cube than the average,
it corresponds ~ +/- to what happens most frequently.
the number of movements is given in HTM (most used notation)
the frequencies for each case are +/- equivalent in the case of CFOP,
see about it which shows them all.
for my method they are also equivalent, with 1 case with low probability