There are
many ways to
solve
Rubik's
Cube, they
all involve
the use of
formulas to
move the
blocks. Some
solutions
require the
use of 50+
formulas
which is
rather
difficult to
learn. We
will present
here a set
of 3
formulas
that are
easy to
learn and
easy to
remember,
this set of
formulas
were
invented by
late Mr.
Ngai Shing
Lee. You
will need a
lot of moves
and you
cannot solve
it quickly,
but at least
you can
solve it.
The basic
concept is
to solve the
corners
first and
then the
edges. This
is based on
the simple
observation
that moving
the middle
rows alone
will not
disrupt the
corners.
The basic
procedure is
as follows:
-
Move the four corners of one face to their correct positions and in their correct orientations (you should not need any formulas for this)
-
Use formula A to move the remaining for corners to their correct positions but need not be in the correct orientations
-
Use formula B to rotate the remaining corner blocks to their correct orientations, now all the eight corners are correct
-
Use formula C to move the edges to their correct positions
All the 3
formulas
will move
the blocks
in the
bottom face
while
keeping the
top face
intact. And
the basic
steps in the
formulas is
"taking out
a block from
the top face
and then
putting it
back".
Now we
present
formula A,
which swaps
the
positions of
3 corner
blocks:
(the result
shown above
starts with
a solved
cube, for
easy
demonstration)
Formula A
goes as
follows:
Note that
the first 3
moves is the
taking out
the lower
right corner
of the top
face, and
the
remaining
steps is the
putting
back. Note
also that
you can also
apply a
variation of
this formula
which takes
out and puts
back the
lower left
corner of
the top face
to achieve a
similar
effect on
the top
left, bottom
left and
bottom right
blocks on
the bottom
face.
After you've
finished
moving the
corner
blocks of
the bottom
face to
their
correct
positions
(but maybe
incorrect
orientations),
you can
apply
formula B to
rotate the
blocks
counter-clockwise:
Formula B
goes as
follows:
Note also
that the
first 3
moves is
again the
taking out
of the lower
right corner
of the top
face, and
then the
remaining
steps is the
putting
back. Note
also that if
you apply a
similar
variation of
this
formula,
then the top
left, bottom
left and
bottom right
blocks in
the bottom
face will be
rotated
clockwise.
After you
have
finished all
the 8
corners, we
should deal
with the
edges using
formula C,
which swaps
the
positions of
3 edge
blocks in a
counter-clockwise
direction:
Formula C
goes as
follows:
Note again
that the
first 3
moves is the
taking out
of the lower
middle
block, and
the
remaining
steps is the
putting
back. You
can also
apply a
variation of
this formula
to swap the
positions of
the blocks
in a
clockwise
direction,
by swapping
the left and
right
rotations as
shown above.
When using
formula C,
sometimes
you will
face a
situation
that the
incorrect
blocks are
not on the
same face,
in this case
you will
need to make
extra moves
to move the
incorrect
blocks to
the same
face before
applying
formula C.
