Friday 10 April 2009

Rubix Cube Solution PART 2 PUT BOTTOM 4 CORNERS INTO PLACE

THE RUBIX CUBE SOLUTION CONTINUED

PART 2 PUT BOTTOM 4 CORNERS INTO PLACE, CONTINUED FROM (PART 1)

The objective of this part is to put each of the 4 remaining corner sub-cubes into its proper place (but not colour aligned).

A, Hold the completed blue side away from you. This is important. Throughout Parts 2 and 3 the completed side must be held away from you (at the back of the cube) at all times! (See figure 15). This next process exchanges Bottom Left Corner (A) with Bottom Right Corner (B).

While holding the completed side away from you, examine the 4 corners of the cube facing you (the front 4 corners, ABC & D). Check the see if any 2 or all of them are in correct position. You will always be able to find either 2 or 4 corners in correct position. If you only find one or you find none, then rotate the front face of the cube and check again.



A corner is in correct position only if all 3 of its colours match all 3 of the colours of the centre squares it touches as in figure 16A below. Figure 16A shows the top right corner in position but not colour aligned. Figure 16B shows the same corner in position AND colour aligned.





If you find all 4 front corners in correct position, then go on to Part 3. If you find 2 corners in correct position they will either be side by side (in A & B or in D & C) or diagonally across from each other (in A & C or D & B). See figure 15.

Remember, you must always find 2 or 4 of the front corners in correct position. If you find none or only one correct, then keep rotating the front face of the cube and check all 4 front corners after each turn until you find 2 or 4 correct.

B. If the 2 corners in correct position are next to each other (in A & B or C & D) then you must exchange the other 2 remaining front corners. To do this , turn the whole cube until the 2 incorrect corners appear in the x’ed positions as shown in figure 17. Keep the completed blue side in back and follow steps 1-8 below.



C. If the 2 corners in correct position are diagonally opposite each other (in A & C or D & B) then you will have to repeat steps 1-8 twice. Follow steps 1-8, then rotate the front face of the cube one turn clockwise or counter clockwise and check the corners again. Now you should find 2 corners side by side in correct position. To exchange the remaining 2 out of place front corners, turn the WHOLE CUBE until the 2 incorrect corners appear in the X’ed positions as shown above in figure 17. Now run steps 1-8 again.

Hint: Get a grease pencil and mark the 2 corners you want to exchange 1 and 2. Then run the process, and you will be able to verify that they changed places.

Grasp the non-rotating two thirds firmly so that the orientation does not change from move to move. After the eighth move, verify that the selected corner sub-cubes exchanged positions and the initially completed blue side is not disturbed.

Remember to keep the completed blue side in back, away from you.










Now check all four corners to confirm that they are all in place.

DO NOT proceed to part 3 unless you still have the starting condition and the additional four corner sib-cubes are in their correct position. None, one or two corners may be aligned. Part 3 will tell you how to proceed.

NEXT UP PART 3 AND PUTTING THE BOTTOM CORNERS INTO COLOUR ALIGNMENT

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