A
SOLUTION TO ERNO RUBIK’S CUBE
(
A Beginner’s Guide)
Introduction
Before solving 3x3x3 Rubik’s
Cube, it is important to get knowing about its (cube’s) parts and functioning
methods. We all know that 3x3x3 =
27. But there is only 21 pieces in a
cube. Six center pieces attached to 1 core + 12 Edge pieces + 8 Corner pieces =
21.
CORE
AND CENTER PIECES
There are six colours to the
six sides of the cube. One colour each
side.
The center pieces in the
middle of each sides are connected to the central core. Even though the center pieces can revolve
individually by themselves, they are unable to shift from their position.
Because of the unableity of changing positions, the center pieces becomes the
deciding factor of the colour of the sides.
EDGE
AND CORNER PIECES
Edge pieces are in two
colours. There are 12 edge pieces in a cube. Each bears unique combination of
colours. They reside at the joining
place of two sides. Egde pieces moves
only between their 12 places.
Tri colour pieces are called
Corner pieces. They reside at the corner
of three sides. There are 8 corner
pieces in a cube. Like edge pieces,
corner pieces also bears unique colour combination. And move only between their 8 places.
HOW
THE CUBE IS FUNCTIONING
Only the six Center pieces
–which are attached to the core- can rotate themselves. Edges and Corners have to move and twist on
their way along with Center pieces only.
So we have to solve the cube by bringing the edge and corner pieces
around the center pieces.
WAYS
OF SOLVING THE CUBE
There are many methods to
solve the cube. But they all can
categorized under two names. LAYER
METHOD and CORNERS FIRST. But all the
methods (up to my knowledge-P.S) are
based on muggapping capacity. Beyond
memory power it is important that the
cube have to be scientifically understand, explain and try to solve.
“CORNERS FIRST” In this method, they first brings all the 8 corners to its places
and put them in their position. Then
sets the 12 edges.
In LAYER METHOD, they splits
the cube in to Top, Middle and Last layers. And finish them one by one.
It may look, that “corners
first” is easier than the other. But it will
do its best to confuse and discourage the beginners. Moreover, after mastering “layer method” one
must try “corners first” by themselves to understand cube in a much better
way. And also all the speed cubing
methods ( intermediate, advanced, expert ) are based on “layer method”
only. “THE RAMPAR METHOD” we explain
here is also a layer method.
THE BASIC
CONTRADICTION OF RUBIK’S CUBE LIES BETWEEN THE RELATIONSHIP OF THE
IMMOVEABILITY/STABILITY OF CENTER PIECES AND THE MOVEABELITY OF EDGE, CORNER
PIECES.
SOLUTION
FIRST LAYER
At first you have to select
a colour from your cube. Then complete
it. This is the first stage. It is true that there is no particular way to do
this stage. All there available are some common guide lines only.
+ making
the cross
Firstly make a cross by
bringing the edge pieces around the center piece of your colour. That is the
other colours of edge pieces must sit along their respective center
pieces. First bring one edge, then try
next and on and on.
completing one colour.
Then bring the corner pieces
to its places. As in edge, bring one
corner first (make sure that the other colours of that corner sits along with its
center). Then try the rest.
If you have finished one
colour means, that you had completed your first layer.
We know that, these are only common guide
lines. But don’t get disappointed. Try your best. You will master the art of forming one colour
in no time. ofcourse, completing one
colour is not that tough. Even
completing the whole cube is not that tough.
Before proceeding further
more, we have to get knowing about the cube through the way of its axises,
their short forms, the way they turns, algorithms. Because, till now there comes no need to
memorize any thing. But, it’ll not be
like that any more.
- Completed sides axis - Upper Axis _ U
- Opposite axis to U axis - Down Axis _D
- Axis facing us - Face Axis _ F
- Axis on our right - Right Axis _R
- Axis on our left - Left Axis _ L
- Axis opposite to F - Back Axis _B
Clockwise, Anti clockwise
rotations and Algorithms
As we are going to handle
the cube, according to directional axis, it is not advisable to turn the cube
often. Because, it may confuse the
direction. So, it is important to learn
to handle the cube with out turning it.
To turn any axis in
clockwise direction, it will be indicated only be the short form of that axis.
( say.. if it was indicated as R, we
have to turn the right axis once in clockwise direction). To turn in anticlockwise direction an apostophe
( ’ ) will follow the short form of
the axis. (eg : F’, to turn face axis once in anti clockwise
direction). (read the apostrophe as “dash”. For U’, read it as “U DASH”)
Some times we may need to
turn an axis twice. In such conditions,
the axis’s short form will be continued by the number 2.(eg. U2, to turn upper
axis two times).
Learn well about the “which
direction to which axis” by turning your cube. It is necessary for not getting
confused, in the on going process.
A series of turnings are
called ALGORITHMS. If a direction comes like < R’D2RF2> means, we have
to turn right axis once in anti clockwise direction, then turn down axis twice,
then right axis once in clockwise direction, then face axis twice. We hear named the Algorithms in alphabets and
with a “dash” for mirror or reverse algorithms. Some times numbers will also
follow the alphabets. You’ll learn soon why and whats the difference.
Remember one important thing, all other axises
except U & D are not fixed
axises. They (FRBL) will change
their name according to the situation. And try to watch the pieces the way they
change their position and how they twist, while using the Algorithms. It is better learning it, than memorizing.
SECOND LAYER
Have to set the four Edges
of the middle row in this stage.
The Edges of the second
layer may be at the same layer or in the third layer. If they are in the third layer, we can fix
them easily with the use of algorithms A & A’. But if they are in second layer and also in a
wrong place, we have to bring them down to the last layer, and then fix them in
their right place and position.
(இன்னும் முழுதாக முடிக்கவில்லை ... மன்னிக்க வேண்டுகிறேன் .. உங்கள் கருத்துக்களை தெரிவிக்கவும்.. நன்றி .. விரைவில் முடித்து போஸ்டு செய்கிறேன்.)
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