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 Post subject: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 4:31 pm 
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On your marks, get set, go!

Attachment:
File comment: Notice: No jumbling moves were used in the scrambling of this puzzle.
SANY1294.JPG
SANY1294.JPG [ 2.11 MiB | Viewed 2161 times ]


Any guidance would be greatly appreciated.

-π (Eitan)

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 4:34 pm 
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Shouldn't be too hard. You can pretty much solve it with one algorithm. That algorithm is G S H A W I R' H'.

Notation:

G = Get
S = Sledge
H = Hammer
A = And
W = Whack
I = It
R' = Really
H' = Hard

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3x3x3 average of twelve: 9.77 seconds.

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 4:36 pm 
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Funny, yet totally not funny at the same time. :lol:

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 4:38 pm 
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Okay, I'm in a lame funny mood today. You could probably solve it with reduction. By the way, is it scrambled with jumbling or without?

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3x3x3 average of five: 8.92 seconds.
3x3x3 average of twelve: 9.77 seconds.

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 4:41 pm 
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If you look closely, in the "File Comment" for the picture, it says "Notice: No jumbling moves were used in the scrambling of this puzzle."

-Eitan

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 5:32 pm 
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There are pieces here that are much as the Curvy Copter that do not appear on the external surface of the normal helicopter. If you use reduction, knowledge of Curvy Copter solving is required.

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 8:18 pm 
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pirsquared wrote:
Any guidance would be greatly appreciated.
My recommended solving order is shown below, where the 1 and 2 pieces solve like a Curvy Copter, then 3 and 4 in either order non pure with [1,1] commutators, finishing with 5 and 6 in either order pure with [3,1] commutators. I have written example algos in invisible ink beneath the image.
Attachment:
Master Heli Cube solution.png
Master Heli Cube solution.png [ 56.98 KiB | Viewed 2055 times ]

3 - [FU, ur]
4 - [fu, ur]
5 - [FR fu FR, ur]
6 - [FR FU FR, ur]
(lower case means slice move)


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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 11:10 pm 
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What does "non-pure" mean? Can you explain the "[1,1]" thing? The Puzzle Solving forum is foreign territory to me, as I am mostly a puzzle builder.

Thanks.

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sat Feb 12, 2011 11:16 pm 
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pirsquared wrote:
What does "non-pure" mean? Can you explain the "[1,1]" thing?
Non-pure means that it's also moving other pieces along with the desired ones. In other words, pure means only moving targeted pieces without effecting any of the others.

The formula for a [1,1] commutator is X, Y, X', Y'. So basically it's a 4-move sequence you're looking for. A classic is the corner orientating [1,1] for a standard 3x3x3 cube solved by the beginners method: R, U, R', U'.


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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sun Feb 13, 2011 1:03 am 
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Katja wrote:
pirsquared wrote:
What does "non-pure" mean? Can you explain the "[1,1]" thing?
Non-pure means that it's also moving other pieces along with the desired ones. In other words, pure means only moving targeted pieces without effecting any of the others.

The formula for a [1,1] commutator is X, Y, X', Y'. So basically it's a 4-move sequence you're looking for. A classic is the corner orientating [1,1] for a standard 3x3x3 cube solved by the beginners method: R, U, R', U'.

Thanks!

Julian wrote:
(lower case means slice move)

What does upper case mean? There are 3 kinds of moves. Outer layer, inner layer, and both.

I just finished solving the Curvy Copter pieces. I'll see what I can do with the other commutators.

-Eitan

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Sun Feb 13, 2011 6:21 am 
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pirsquared wrote:
Julian wrote:
(lower case means slice move)
What does upper case mean? There are 3 kinds of moves. Outer layer, inner layer, and both.
Upper case means outer layer move.


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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Tue Feb 15, 2011 4:28 am 
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Could anyone tell me what it is [FR fu FR, ur]?
Thanks.

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Tue Feb 15, 2011 7:11 am 
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Chilen wrote:
Could anyone tell me what it is [FR fu FR, ur]?
Thanks.
In full, the algo is FR fu FR ur FR fu FR ur.

Assigning face labels to the puzzle just like with a regular 3x3x3 cube, F(ront), U(p), R(ight), etc., the first two moves described in full are:

FR = Outer 180 degree twist of the edge between the F and R faces
fu = Inner/slice 180 degree twist of the edge between the F and U faces

And so on.


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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Tue Feb 15, 2011 7:35 am 
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Julian wrote:
Chilen wrote:
Could anyone tell me what it is [FR fu FR, ur]?
Thanks.
In full, the algo is FR fu FR ur FR fu FR ur.

Assigning face labels to the puzzle just like with a regular 3x3x3 cube, F(ront), U(p), R(ight), etc., the first two moves described in full are:

FR = Outer 180 degree twist of the edge between the F and R faces
fu = Inner/slice 180 degree twist of the edge between the F and U faces

And so on.


Julian's response is 100% correct, but it may give the wrong impression. In general, the commutator [a,b] is the same as a b a' b'

(where ' denotes the inverse of an operation; aka doing the operation in reverse)

So on a Rubik's Cube [F,R] = F R F' R'
and [U',FRD]=U' F R D U D' R' F' [note that (abc)'=c'b'a']

it just so happens that on a master helicopter, (remember FR denotes a single move, not two) FR = FR' and for this particular case, FR fu FR is a palindrome so reversing the order does nothing, although technically it still must be done.

Make sense? :P

Peace,
Matt Galla


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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Tue Feb 15, 2011 8:08 am 
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Thank you, Julian and Allagem.
I found [FR fu FR, ur] will change 3 centers purely.
So I think changing step4 to step6 seems easier.
4 [FR FU FR FU, ur]
5 [fr, ur]
6 [FR fu FR, ur]
Maybe I am wrong.

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Last edited by Chilen on Tue Feb 15, 2011 2:12 pm, edited 1 time in total.

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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Tue Feb 15, 2011 1:50 pm 
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OMG!!!!!! looks very difficult!!!! :lol: :lol:


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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Tue Mar 15, 2011 7:27 pm 
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Joined: Wed Jan 07, 2009 6:46 pm
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Hey Solvers,

I'm still working away at this, and it's driving me insane. I am stuck with two pairs of "piece 3" switched. Here's a picture.
Attachment:
File comment: Help please?
SANY1345.JPG
SANY1345.JPG [ 2.12 MiB | Viewed 1621 times ]

I feel like I'm going around in circles. Any help would be greatly appreciated.

Thanks!

-Eitan

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Buy a Radio Cube 3! Only $150 at Eitan's Shapeways Shop
Check out my video: Twisty Puzzles a la Vi



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 Post subject: Re: Master Helicopter Cube - Scrambled
PostPosted: Tue Apr 19, 2011 2:06 am 
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Location: Taipei, Taiwan
I think you can do jumbling to swap piece 1,2 and 3,4 ,than turn (RD) to swap 3,4 and 5,6.
Now you will see three pairs (orange, green and green)
Do 3-cycle algorithm to Fix the orange pair than swap 3,4 and 5,6
Do jumbling to swap 1,2 and 3,4


Attachments:
Clip3.png
Clip3.png [ 9.04 KiB | Viewed 1493 times ]

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