Rubik's Cube/Rubik's Maneuver
Appearance
+---------------------------------------------------------------------------------------------+ | 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 | | | +---------------------------------------------------------------------------------------------+