Rubik's Cube/Rubik's Maneuver
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| HOW TO FIND YOUR VERY OWN PERSONAL WAYS TO SOLVE RUBIK'S CUBE |
| (Preliminary April 20, 2007 version) |
| by Mr. Ray Calvin Baker |
| FREE Public Domain Educational Material |
| |
| Chapter Nine - - - - - - - - - - Rubik's Maneuver -- How to Flip Two Edge Cubies |
| |
| Goal Four is to orient each of the twelve edge cubies at its proper location. This will |
| finish a solution of the Cube! (This is the only elaborate operation I actually memorized |
|(and still remember) from some of the books I have read.) |
| |
| _ * _ (t) |
| _ * _TOP_ * _ / |
| _ * _TOP_ * _ k _ * _ |
| * _TOP_ * _TOP_ * _TOP_ * A Cube Notice that the edge cubies |
| | * _ f _ * _TOP_ * | in need of which need to be "flipped" |
| | F | * _TOP_ * | R | Rubik's correspond to edge cubie #2 |
| * _ | t | * | R | _ * Maneuver and edge cubie #3 as |
| | * _ | F | R | _ * | described in Chapter Eight. |
| | F | * _ | _ * | R | |
| * _ | F | * | R | _ * The edge cubies |
| | * _ | F | R | _ * | at BACK TOP |
| | F | * _ | _ * | R | and FRONT TOP |
| * _ | F | * | R | _ * need to be |
| * _ | F | R | _ * "flipped". |
| * _ | _ * |
| * |
| |
| DIAGRAM 9-1. A Cube in Need of Rubik's Maneuver |
| |
| Rubik's Maneuver "flips" two edge cubies at the BACK TOP and FRONT TOP locations. You will |
| need to use the "slice" moves ("down-slice" and "up-slice"), which were described in |
| Chapter Eight, "". Here is the recipe. (I memorized this -- you can, too.) |
| |
| Down-slice (2R^ Rv). |
| Turn the top (always in the same direction (T^ or Tv, it doesn't matter as long as |
| you are consistent) . |
| Down-slice. |
| Turn the top. |
| Down-slice. |
| Turn the top twice (T2). |
| |
| Up-slice (2Rv R^). |
| Turn the top (still in the same direction). |
| Up-slice. |
| Turn the top. |
| Up-slice. |
| Turn the top twice (T2). |
| |
| DIAGRAM 9-2. Instructions for Rubik's Maneuver |
| |
| And what if you need to "customize" your moves to "flip" two edge cubies which are NOT at |
| the FRONT TOP and BACK TOP positions? You have already been able to juggle THREE edge |
| cubies, following the directions in Chapter Eight, "". Just rotate the entire Cube until |
| one of the edge cubies to be flipped is at the BACK TOP position. (This corresponds to |
| edge cubie #2 as discussed in Chapter Eight, "".) Then use part two of the instructions of |
| Chapter Eight to position another edge cubie that needs to be flipped. (This corresponds to |
| edge cubie #3, as discussed in Chapter Eight.) Do Rubik's Maneuver, then undo the moves |
| you used to "customize" the locations of those two edge cubies that got flipped. |
| |
| Don't worry about "edge cubie #1" -- Rubik's Mauever (if done correctly) only flips the two |
| edge cubies at FRONT TOP and BACK TOP. The edge cubie at BOTTOM BACK should be completely |
| unaffected by Rubik's Maneuver. |
| |
| There is one special case not handled by the instructions in Chapter Eight. Can you figure |
| out what needs to be done for this special situation? |
| |
| __ This is where we want #3. |
| / |
| +----+ +----+ +----+ +----+ |
| | | | | | | | #2 | |
| +----+----+----+----+----+----+----+----+----+ |
| | | L | | F | | R | | K | | Customizing Move: |
| +----+----+----+----+----+----+----+----+----+ "3R^". |
| | | | | | | | #3 | |
| +----+ +----+ +----+ +----+ |
| |
| DIAGRAM 9-3. Special Case Not Handled by Instuctions in Chapter Eight |
| |
| In the worst case, you will need to do Rubik's maneuver six times to flip 12 edge cubies. |
| (In the best case, you won't need to do it at all.) |
| |
| ... And after all that work, the result is .... |
| |
| +---+---+---+ |
| |TOP|TOP|TOP| |
| +---+---+---+ |
| |TOP|TOP|TOP| |
| +---+---+---+ |
| |TOP|TOP|TOP| |
| +---+---+---+---+---+---+---+---+---+---+---+---+ |
| | L | L | L | F | F | F | R | R | R | K | K | K | |
| +---+---+---+---+---+---+---+---+---+---+---+---+ |
| | L | L | L | F | F | F | R | R | R | K | K | K | |
| +---+---+---+---+---+---+---+---+---+---+---+---+ |
| | L | L | L | F | F | F | R | R | R | K | K | K | |
| +---+---+---+---+---+---+---+---+---+---+---+---+ |
| | B | B | B | |
| +---+---+---+ |
| | B | B | B | |
| +---+---+---+ |
| | B | B | B | |
| +---+---+---+ |
| |
| DIAGRAM 9-3. The Unscrambled Cube |
| |
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