Fall-out Dust Monitoring Solutions
The purpose of this move is to rotate 3 of the 4 middle
pieces of the bottom of the cube. This will put them in the correct order.
This move is just an extension of "Move 1", in fact it is "Move
1" repeated. If
you have not mastered move 1 then you will probably not
be able to do this move.
An important point is that the orientation of the middle pieces is not important at this stage, we will turn them around in the next move. (See picture)
This cube has it's top made & two rows made below the top. The cube has been turned on its side so that you can see the bottom.
The
blue & green
middle piece is in the correct position even though the green does not
match up.
Also the blue & yellow middle piece is in the correct position even though the yellow does not match up.
Turn the cube so that the bottom is now facing you. Look at the 4 middle pieces of this bottom row. To begin with it will be easier to use a piece of paper.
- Write down the order of the colors of the 4 sides (faces) of the cube, e.g. green, red, white & yellow. It doesn't matter which way round the cube you go.
- move one of the colored sides (bottom row) to match up with it's corresponding middle piece, REMEMBER THAT THE ORIENTATION IS NOT IMPORTANT JUST THE POSITION OF THE BLOCK. Make sure that there is only one middle block that is in the correct position, if there are two in the correct position then rotate the bottom again to until you only have one middle piece in the correct position.
- It is possible to have two pieces in the
correct positions no matter where you turn the bottom of the cube. If
this happens then you will need to do Move 2 with any of the bottom middle
blocks and then you will be able to get only one middle block in the correct
position, ready for Move 2 again. This is very rare and has only
happened to me one time.
NB, please remember to try to rotate the bottom row, to get one piece in the correct position, before doing move 2 with any middle piece. The only time when you cannot get one piece in the correct position is when the two pieces that are in the correct positions are on opposite sides of the cube.
Here
the green & Blue
middle block is in the correct position.
- Write down the color you have matched up, lets say it is green. From the order that you have written down you can see that the colors on the left & right of green are yellow (left) & red (right). Now keeping the green block in the same place rotate (In your mind, or right it down) the other 3 blocks to the left or to the right.
- Once you have those 2 pieces of information then you can use "Move 2" to do exactly what you want. (See picture above)
In
this picture the green & blue middle block is the correct position. If
this block stays in its position & the other three blocks are rotated to the
left (anticlockwise) then the order will be green, red,
white & yellow (naming is
done in a clockwise direction).
This is the required order.
This might explain it a bit better.
The move allows you to rotate 3 of the middle blocks clockwise or anti-clockwise, while keeping one edge block stationery. Look at the numbers below. Take this as the 9 blocks of the bottom face of the cube you are working with.
You have to keep block 2 in its place and
rotate blocks 4, 6, & 8 in a clockwise or anticlockwise direction depending
on what you need to achieve.
1 2 3
4 5 6
7 8 9
This set of numbers indicates the new order of the numbers/blocks after the move has been completed with the edge block 2.
1 2 3
8 5 4
7 6 9
This set of numbers indicates the new order of the numbers/blocks after the move has been completed with the edge block 6
1 4 3
8 5 6
7 2 9
Not that both these examples show clockwise turning of the three edge pieces, anti-clockwise is also possible.
Look at the middle block of the bottom row that you want to remain stationary (Green one). To rotate the other three middle blocks to the left you start the move to the right, using the block that you want to keep stationary.
Turn the cube so that the bottom is facing down again and the piece that you are going to do move 2 with should be facing you, just as it was when you were using move 1 to get the second row below the top correct.
If you would like a solution in booklet, or rather book (30 pages) then it will cost you $10.95 US, and it will be in MS word format, ready for ring binding.
- Do "Move 1" (Yes the same move you have just learnt, with the cube in the same orientation that you had it for move 1.) with the block that you want to remain stationary, start your first turn to the left or the right depending on what you want to do, (left will rotate the other three blocks clockwise, and right will rotate the other 3 blocks anti-clockwise). REMEMBER THAT MOVE 1 CONSISTS OF 8 TURNS, NOT ONLY 4 TURNS.
- Once you have completed "Move 1" you will notice that you have removed one of the middle blocks of the middle row out to the bottom row. All you need to do now is to put this middle block back where it was using yet again "Move 1"
- When you have done this then you will notice that the bottom middle pieces have now moved and are in the correct order. The rest of the cube is as it was before you started the move 2.
Eventually this move will also become very familiar & you will probably be able to memorize the 16 turns that make up "Move 2".
Once you have the block in the correct places, then you can do "Move 3" to turn the middle blocks that are not facing the right way, without disturbing the rest of the cube.
A point to note is that if a cube has been pulled apart and put back together without the pieces being in the correct positions then the cube might not be possible to complete, so always start with a cube that you know has been correctly put together. i.e. break it and put it together properly and then mix it up again. Otherwise you will be pulling your hair out as well!!
(For more links go to the top or see the Cube Summary)
My Personal Testimony
Lego is not what it used to be : http://jpbrown.i8.com/cubesolver.html
www.dilaigraphics.com/rubix.htm
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