Tuesday, July 15, 2014

Bandage Cube Kit—Unbandaged Flying Carpets & budlcuber 02

Today I solved the Unbandaged Flying Carpets, by Burgo. It was fun. He had posted—a long time ago—on the twistypuzzles.com forum. The interesting thing is that he posted pictures of the scrambled state, not solved. So part of the challenge was making your way to a place without knowing where you were going. I struggled to get the middle layer, but finally achieved it by trying to organize the 2x1 yellows somewhat. Then when I looked at the yellows all I needed to do was twist 3 corners to have a pattern that pleased me. I got "iii" on one side, and "iö" on the other side.

After solving Unbandaged Flying Carpets I felt like making my own bandaged cube, scrambling it, and posting it online. budlcuber 01 was very simple to solve. Well, when approached correctly it was. So I decided to make it a teeny bit more complex. Now I can't solve it! Here it is in scrambled state:

 

budlcuber 01 was the same puzzle minus the 3x1x1 block.

budlcuber 02 is almost solved, but even if I can figure out how to flip the last edge, I won't be able to tell you how I got to this point.

Here is what it looks like now. Perhaps it is time to just swap the tiles and start slowly and carefully analyzing it.



July 16, 2014
I tried last night but got nowhere and it was soon a mess again. I had just about decided to detile it and start over where I left off with the ones on Burgo's list on the forum. Another possibility was to break the 3x1x1 into a 2x1x1 and a 1x1x1, but I didn't really want to do that. The problem with this puzzle was that it seemed that the best I could do was have two layers that could twist. Sometimes only one. And even when I could twist two layers I couldn't get any familiar algorithms to work. I was so close to giving up, but decided to fiddle with it one more time today. This time instead of worrying about what I couldn't do, I just looked for things I could do, and wrote them down and recorded the affects. (I'm using Ri for R anti clockwise, because I don't like the way the F' looks.)

With Green on front and Red up, the first thing I tried was—
R RURi FiLiF RURi FiLF Ri
I wasn't overly impressed with the results so went back to solved. Next I tried—

R FiLF2 RiDR y
Surprise! Now L, M, and R can all move! Follow with
LiMiRi
and now L, M, R, and U can all move! So altogether we have—

R FiLF2 RiDR yxR2 from the solved state puts the

3x1x1 at the bottom in R;
The white 2x1 on the bottom at the back of the M slice;
The orange 2x1 on the front at the bottom of the M slice;
The 2x2x1on the bottom back in L.

And what can I do now?
  • The Sune Family! The cube, or at least the bottom layers need to be spun around for some. Example—(DE)2 Ri or y2 sets it up for a right-handed Sune.
  • LiUi LU and y2Ri RU RiUi.
Shortly after this I started experimenting with a solved 3x3x3 cube so I could better see where pieces were moving.
  • (Right-hand Sune) (DE)2 L (Left-hand Sune) Li (DE)2 RU RiU moves UF > UB > UR and twists corners 2, 7, and 8 clockwise. 
  • With the 3x1x1 in R do R2 U2 R U2 R2 to cycle FR > UR > BR > UL.
So now I am somewhat hopeful that with this knowledge I can maybe make some progress toward solving budlcuber 02. (Later) Almost there. The one corner isn't in the correct place. Maybe tomorrow. Good night.

July 17, 2014
Solved! But getting the last corner was a matter of trying the algorithms above in different combinations until something worked. Not real confident about it. I need a corner twister that doesn't move edges.

Breakthrough on another front. Mi U2 M Ri F2 R does a 5 cycle of corners and a 3 cycle of edges. After doing it for awhile I realized it could be shortened to these:
  • (U2 Li U2 L) x 3 cycles 1>2>4>8>7 A Pure Corner Cycle!
  • (U2 Li U2 L) x 5 cycles UL > UR > FL A Pure Edge Cycle!
To get back from the working state to solved state—
  • R2x'y' RiDiR F2LiF Ri
As far as the corner twister goes, Once all the edges are solved, get the corner to 1, twist it using Li Ui L U times 2 or 4, if necessary. Then move it into place using the pure 5 cycle. Then Use Li Ui L U times whatever until the edges are solved.

I think I've got everything I need to solve this little bugger. Ain't so impossible after all.

The finished product—



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