Skip to search.

Breaking News Visit Yahoo! News for the latest.

×Close this window

speedsolvingrubikscube · Speed Solving Rubik's Cube - All about speed solving the Rubik's Cube

The Yahoo! Groups Product Blog

Check it out!

Group Information

  • Members: 2869
  • Category: Puzzles
  • Founded: Jun 19, 2000
  • Language: English
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Hear how Yahoo! Groups has changed the lives of others. Take me there.

Messages

Advanced
Messages Help
Messages 517 - 547 of 42768   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Show Message Summaries Sort by Date ^  
#517 From: "simonl cube" <simonlcube@...>
Date: Mon Jul 1, 2002 8:55 am
Subject: Re: [Speed Solving Rubik's Cube] chat error
simonlcube
Send Email Send Email
 
I couldn't get mine to work, but it was the first time I had tried to I just
assumed it was me.  But perhaps not?

Simon


>From: "hatadey" <dan_j_harris@...>
>Reply-To: speedsolvingrubikscube@yahoogroups.com
>To: speedsolvingrubikscube@yahoogroups.com
>Subject: [Speed Solving Rubik's Cube] chat error
>Date: Sun, 30 Jun 2002 19:00:39 -0000
>
>is it me or is the chat not working this week? The applet wont
>initialize...
>
>Dan
>
>
>
>To unsubscribe from this group, send an email to:
>speedsolvingrubikscube-unsubscribe@yahoogroups.com
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>




_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail.
http://www.hotmail.com

#518 From: "simonlcube" <simonlcube@...>
Date: Mon Jul 1, 2002 8:56 am
Subject: Re: Cube Review
simonlcube
Send Email Send Email
 
> I'll not be using them any time soon, because I used some on
> my favorite cubes and these stickers last forever!  They won't
> need replacing for years.  So, I have 2 sets of holographic ones
> and two sets of plain.  Anytime you need some, let me know.  Oh,
> and I also have a set of plain stickers for the Revenge if you're
> interested.
>
> Anyone else need some?  I'm in England and I'm happy to send
> to wherever really.
>

I live in Oxford, UK, and I would LOVE some of those plain stickers!
My cube has not got to be about 70% white.
If the offer is still on, if you email me I can pass on an address?
Where did you get these sets from?  Are they still available?
Simon

#519 From: bobbit_at_mac_dot_com
Date: Mon Jul 1, 2002 9:37 am
Subject: Re: Cube Review
bobbit_at_ma...
 
> I live in Oxford, UK, and I would LOVE some of those plain
stickers!
> My cube has not got to be about 70% white.
> If the offer is still on, if you email me I can pass on an
address?
> Where did you get these sets from?  Are they still available?
> Simon

I'll send you an email in a tick... if you want to see where I got
them, click here:

http://www.rubikshop.com/cgi-bin/shop_new.cgi/page=quick.htm
l

I really don't recommend the lube.  I mean REALLY!  Not unless
you like cleaning your cube out afterwards.

#520 From: "papegoja99" <dani@...>
Date: Mon Jul 1, 2002 12:07 pm
Subject: Where to purchase a cube?
papegoja99
Send Email Send Email
 
Hi,
Does anyone have any tips where I can buy a cube?
I live in Sweden, and am having trouble finding a store that sells
the original.
Iīm realy fed up with my "Magic cube" rip-off!!!
Maybe an online shop that has cheap shipping?

/Dani

#521 From: eligeon
Date: Mon Jul 1, 2002 5:29 pm
Subject: A Saddened Cubist
eligeon
 
I have solved the rubiks cube too many times to recount in just 9
months.  Back after September 11, I was first introduced to a brand
spanking new rubiks cube.  By the end of May, I was happy that I
could do it in 2 1/2 minutes.  Recently, I have made even further
process to where I average 1 minute and 2 seconds.  I can't help
though, but question the some things.  Is it possible for anyone to
have a sub 20 time?  I ponder this every time I solve the cube.  I
know that I might reach the time under a minute, but the fact that I
see mostly older people solve the cube really bugs me.  Does it take
five or so years to turn a time from 2 1/2 to -20 seconds?  I am 15,
and I think I am the fastest cube solver in my district.  But, could
someone please answer me....IS it possible for someone who is
dedicated to solving the cube, able to reach a time under 20
seconds?  This saddens me since I don't know if it is.  Please,
someone.......help!

#522 From: eligeon
Date: Mon Jul 1, 2002 6:13 pm
Subject: Re: Where to purchase a cube?
eligeon
 
Um... Do you have a walmart over there?  That is where I got mine.
They should have Oddzon Rubik's cubes, and they turn out incredible
speeds after you work on them.

#523 From: j_rueth
Date: Mon Jul 1, 2002 6:15 pm
Subject: Re: mihn thai
j_rueth
 
does he still cube?

#524 From: bobbit_at_mac_dot_com
Date: Mon Jul 1, 2002 6:31 pm
Subject: Re: A Saddened Cubist
bobbit_at_ma...
 
--- In speedsolvingrubikscube@y..., eligeon <no_reply@y...>
wrote:
>   I have solved the rubiks cube too many times to recount in
just 9
> months.  Back after September 11, I was first introduced to a
brand
> spanking new rubiks cube.  By the end of May, I was happy that
I
> could do it in 2 1/2 minutes.  Recently, I have made even further
> process to where I average 1 minute and 2 seconds.  I can't
help
> though, but question the some things.  Is it possible for anyone
to
> have a sub 20 time?  I ponder this every time I solve the cube.  I
> know that I might reach the time under a minute, but the fact
that I
> see mostly older people solve the cube really bugs me.  Does
it take
> five or so years to turn a time from 2 1/2 to -20 seconds?  I am
15,
> and I think I am the fastest cube solver in my district.  But, could
> someone please answer me....IS it possible for someone who
is
> dedicated to solving the cube, able to reach a time under 20
> seconds?  This saddens me since I don't know if it is.  Please,
> someone.......help!




Take heart my friend, for it is possible, and I have seen a
glimmer of this truth in my own solving  ; ]

I don't use an efficient method by any description.  I form a cross,
then place three corners, then three edges, then the last corner,
then the last edge to complete the F2L.  Then I work on the LL
where I orient edges, permute edges, permute corners, then
finally orient corners.

As you can see, this is far less efficient than using full F2L algs
for placing corners and edges simultaneously, then OLL in one
alg, and PLL in a second alg.  I can easily see how people can
solve in under 20 seconds by increasing efficiency by such a
huge amount.

My inefficient method lets me solve in an average of 45 seconds.
My big downfall is I still don't think fast enough to make the whole
solution fluid.  On a good day, where I link the algs seamlessly,
I'll often get low 30's with a personal best of 29 seconds (a little
lucky perhaps).  On a bad day when I'm feeling a big run down
and I can't concentrate, I still get under a minute no problems.

Next on the agenda for me is to learn the F2L algs.  My only worry
is my thinking times.  If it takes me too long to recognise the
cases, I might as well use the one by one method.  I'm also very
lazy, it'll take me ages to bother learning it all.

#525 From: eligeon
Date: Mon Jul 1, 2002 7:23 pm
Subject: Re: A Saddened Cubist
eligeon
 
Hmmm... See I use a certain method that I made for the first two
layers.  I call it the 'Boomerang' method.  I am gonna have it up to
see on a site later, but I was wondering how long you have been
cubing?

#526 From: bobbit_at_mac_dot_com
Date: Mon Jul 1, 2002 7:39 pm
Subject: Re: A Saddened Cubist
bobbit_at_ma...
 
--- In speedsolvingrubikscube@y..., eligeon <no_reply@y...>
wrote:
> Hmmm... See I use a certain method that I made for the first
two
> layers.  I call it the 'Boomerang' method.  I am gonna have it up
to
> see on a site later, but I was wondering how long you have
been
> cubing?


Why do you call it the boomerang method?  Is it because no
matter how much you try to solve it, it keeps getting scrambled
again?  lol?

I have been cubing a little over a year now.  But I've not really got
any faster for some 4 months now.  So maybe it took me 9
months to peak.  I don't cube as much as some do, but just
enough to help me through the day  :]

#527 From: eligeon
Date: Mon Jul 1, 2002 9:00 pm
Subject: Re: A Saddened Cubist
eligeon
 
Ok.  And no, it isn't called the boomerang method because you keep
scrambling up the cube over and over.  Lol!  I will put the address
of the solution up shortly though!

#528 From: jasmine_ellen
Date: Mon Jul 1, 2002 10:55 pm
Subject: Re: mihn thai
jasmine_ellen
 
If he does, I don't think he reads this site!!

Or perhaps he does, and he'd just biding his time...


--- In speedsolvingrubikscube@y..., j_rueth <no_reply@y...> wrote:
> does he still cube?

#529 From: "cubist3x3only" <cubist3x3only@...>
Date: Tue Jul 2, 2002 12:32 am
Subject: ill be in the chat room
cubist3x3only
Send Email Send Email
 
just click "CHAT" i shall be there.. oh ya i have been cubing for
around 6 1/2 months im at 31 sec avg sometimes late 20's pb 25secs

#530 From: cmhardw
Date: Tue Jul 2, 2002 4:27 am
Subject: you know you're a cube addict when.......
cmhardw
 
I just recently got finished cubing for the first time in about a
week and a half.  I've been laying off the cube for periods of a
week or so lately due to my wrist, and also just recently I started
following Ron's advice of only cubing for periods of ten minutes or
so and then putting the cube down for a while.  Anyway what inspired
me to write this message is I was getting a little worried that this
forced time away from the cube would maybe lessen my addiction
some.  This definitely is not the case.  I had a light cube craving
about fifteen minutes ago, dug my cube up out of the jungle that is
my room and started cubing.  Then it was like this wave of
relaxation came over me.  So I cubed for about ten minutes, and it
was incredibly relaxing, got some good times, got some bad times but
it didn't matter cause man it felt good to cube again.  So the
phrase "you know you're a geek when" popped into my head and I
decided to write this post.  Ok, my moment of inspiration is drawing
to a close.  Hoped you guys enjoyed this message as some sort of
entertainment.  I'm still one of you, just cubing less frequently I
guess.

Chris

#531 From: ilovemycube
Date: Tue Jul 2, 2002 9:11 am
Subject: Re: mihn thai
ilovemycube
 
Hi friendz,

> If he does, I don't think he reads this site!!
Minh is still a sub 1 minute cubist! But indeed he is not as active
anymore as we are now. But he taught solving the cube to his 10 year
old son.

Keep the cube alive!

Ron (from Barcelona)
http://www.speedcubing.com

#532 From: "simonl cube" <simonlcube@...>
Date: Tue Jul 2, 2002 9:46 am
Subject: Re: [Speed Solving Rubik's Cube] A Saddened Cubist
simonlcube
Send Email Send Email
 
By the end of May, I was happy that I
>could do it in 2 1/2 minutes.  Recently, I have made even further
>process to where I average 1 minute and 2 seconds.  I can't help
>though, but question the some things.  Is it possible for anyone to
>have a sub 20 time?

Hey, you've cut 90 seconds from your time in 2 months!  Keep that up and in
two months time you will be solving the cube 30 seconds before you start!
Seriously, keep it up and you are pretty likely to keep on cutting your
average, at least for the  moment.

I ponder this every time I solve the cube.  I
>know that I might reach the time under a minute, but the fact that I
>see mostly older people solve the cube really bugs me.  Does it take
>five or so years to turn a time from 2 1/2 to -20 seconds?

Good question.  Hey all you sub-20 people: how long did it take to get from
60 seconds down to 20 seconds??

   I am 15,
>and I think I am the fastest cube solver in my district.

I might well be fastest in my area, but probably because I am the only one
who actually cubes within a 30-mile radius of where I live :(

But, could
>someone please answer me....IS it possible for someone who is
>dedicated to solving the cube, able to reach a time under 20
>seconds?  This saddens me since I don't know if it is.  Please,
>someone.......help!
>
I reckon that not everyone could reach under 20 seconds, mostly because it
seems that getting that fast is pretty hard work, and most people dont have
the enthusiasm / interest to put in the time required.  But if someone is
keen enough then they must have a pretty good chance, at least, I hope so.

S.

And what is this Boomerang method?  I want to know!


_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.com

#533 From: eligeon
Date: Tue Jul 2, 2002 7:23 pm
Subject: How long until you get fast?
eligeon
 
I was wondering if some of the people in the low 20's or sub 20
times could tell me how long it took them to get there?

#535 From: eligeon
Date: Wed Jul 3, 2002 1:13 am
Subject: Boomerang! A new solution is born!
eligeon
 
I have been cubing for nine months now and have a best time of
49.03 seconds.  I got this time using an original method that you can
see here:  http://www.geocities.com/eligeon      Please tell me your
thoughts!  It is pretty original and is categorized as a layer by
layer system.

#536 From: j_rueth
Date: Wed Jul 3, 2002 1:38 am
Subject: big cubes
j_rueth
 
Is there a place on line where i can play with a big cube(like a
20x20) if so where can i play with one?
Jake

#537 From: cmhardw
Date: Wed Jul 3, 2002 3:23 am
Subject: Re: How long until you get fast?
cmhardw
 
--- In speedsolvingrubikscube@y..., eligeon <no_reply@y...> wrote:
>   I was wondering if some of the people in the low 20's or sub 20
> times could tell me how long it took them to get there?

For me low twenties and high teens came about two years after I first
started cubing.  Sub twenty average is four years and still going.

Chris

#538 From: larrpas
Date: Wed Jul 3, 2002 3:36 am
Subject: Re: Periodicity of algorithms
larrpas
 
Here are the results of my computations : the maximum periodicity for
an algorithm of a given lenght and an example for each one :

Using only single turns (R, R', U, U', F, F', L, L', D, D', B, B') :
1 move : 4 (R) (Don't need a computer for this one!)
2 moves : 105 (R U)
3 moves : 360 (R U B')
4 moves : 420 (R U L D')
5 moves : 840 (R U R F' D')
6 moves and more : 1260 (R U L' B R L')

Using only double turns (R2, U2, F2, L2, D2, B2) :
1 move : 2 (R2)
2 moves : 6 (R2 U2)
3 moves and more : 12 (R2 U2 F2)

Using both single and double turns :
1 move : 4 (R)
2 moves : 105 (R U)
3 moves : 360 (R U B')
4 moves : 840 (R U F2 B')
5 moves and more : 1260 (R U2 D' B D')

Thanks to GameOfDeath (GOD?) for his posts on this subject.
Is there a good book about the mathematics of the Rubik Cube?
LP



--- In speedsolvingrubikscube@y..., GameOfDeath2 <no_reply@y...>
wrote:
> --- In speedsolvingrubikscube@y..., ilovemycube <no_reply@y...>
> wrote:
> > Hi friendz,
> >
> > David Singmaster's book shows RF2R'UB' (found by J.B.
> Butler) as an
> > algorithm (the shortest?) of the maximum order 1260.
> >
> > > The 72 possibilities in full are
> > >
> 1,2,3,4,5,6,7,8,9,10,11,12,14,15,16,18,20,21,22,24,28,30,33,35,
> > >
> 36,40,42,44,45,48,55,56,60,63,66,70,72,77,80,84,90,99,105,110
> > >
> ,112,120,126,132,140,144,154,165,168,180,198,210,231,240,25
> > > 2,280,315,330,360,420,462,495,504,630,720,840,990,1260.
> >
> > The Dutch 1981 book "De Hongaarse kubus voor
> doordraaiers" by Frans
> > Schiereck shows some examples of different orders:
> > 1 ME2M'DM'E2MD
>
> Easier is to do nothing at all! (or R4) for instance)
>
> > 2 RLU2R'L'
>
> Easier is R2
>
> > 3 MD2M'D2
> > 4 FDF'
>
> R is about easiest here.
>
> > 5 MDM'D'
> > 6 U2R2
> > 8 RE
> > 9 F2UR
> > 12 F2R2U2
> > 15 MUSU'
> > 20 FDRM
> > 21 RU2BU2
> > 24 UL2R2
> > 28 L'URU'
> > 30 U2R
> > 35 RU2L'U2
> > 36 R2UF
> > 40 LBS2D
> > 42 UD2MSMB
> > 45 FD'F'R'D'R
> > 60 U2RD2L
> > 63 UR'
> > 80 DLB
> > 84 DUL
> > 90 RDL
> > 105 UR
> > 120 BRE
> > 144 MFBD
> > 168 U2RD
> > 180 UFBLR'
> > 315 URDL
> > 336 U2R2UR2UFBLR (incorrect? is not on Richard's list,
> maybe 360)
>
> Yeah, I messed up with that one. Not sure why. It can be
> achieved from a 4 and 6 cycle of edges and a 7 cycle of corners.
>
> > 360 FU'R
> > 396 UDR2EL (incorrect? is not on Richard's list)
>
> This is only possible because you're using E in your list of
> generators. If you only use U, D, F, B, R and L then 396 is not
> possible (the above move does indeed take 396 sequences to
> come back to the start). It's to do with E not fixing the position
of
> the centres.
> In the set of generators U, D, F, B, R and L if we are to have
> 396=11*36 then there must be an 11 cycle of edges. That leaves
> a factor of 36. The edges contribute either 11 or 22 (neither of
> which is divisible by 4) so we must have that the corners are
> fixed every 36 moves. To get a from the corners requires a cycle
> of length 4 or a cycle of length 8 (but then we get a factor of 8,
> which we don't need and can't get the 3s either). So we must
> have a 4 cycle and since the edge permutation is even we either
> have another 4 cycle or a 2 cycle as well. This leaves no room for
> a 3 cycle so we can only pick up a factor 3 by corner orientation
> aand we can't get a factor of 9. So 396 shouldn't be on my list
> (although it can be on yours since you're allowing the move E).
>
> If you look at UDR2EL you'll see that after 6 moves the corners
> are correctly positioned, if not correctly oriented, relative to
the
> original centres which come back into position every 4 moves.
> So every 24 moves the centres are back in their positions and so
> are the corners (although they are not correctly oriented). The
> corners are correctly positioned and oriented every 18 moves so
> the corners and centres are correct every 36 moves
> (36=lcm(18,4)) and after 36 moves you can see that the edges
> are 11 cycled. So after 396 moves everything is in place. I didn't
> check that the orientations of the edges are OK after 396 moves
> but I guess they are given that that is the given move.
>
> > 840 SERFD
> > 1260 RF2B'UB' (incorrect? differs from J.B. Butler's solution)
> >
>
> This one should be easy to check. By doing RF2B'UB' I can see
> in the edges a 7 cycle and 2 2 cycles (of which in one there is
> one edge flipped and the other not) and in the corners a 5 cycle
> and a 3 cycle (containing one twisted corner) so this move does
> have order 1260.
>
> On the other hand  RF2R'UB'  fixes the FR and DL edges so it
> can't have the required cycle structure so it doesn't have order
> 1260.
>
> > There may be some typos.... Sorry that I did not check any of
> them. ;-
> > )
> >
> > Have fun!
> >
> > Ron
> > http://www.speedcubing.com

#539 From: "papegoja99" <dani@...>
Date: Wed Jul 3, 2002 5:40 am
Subject: Re: Where to purchase a cube?
papegoja99
Send Email Send Email
 
Nope, no Walmart over here.
The toy-industry here have some crazy idea that the cube is "out". So
they donīt import it anymore. Havnīt done so for some ten years now.
If your lucky one store might stock upp on some just has a gag. But
to there astonishment they all sell with in a month! And still they
donīt understand that they should have the cube on the shelfs has a
standard product!!!
I looked all over Stockholm, and all I could find was a "Magic cube".
Sure it works, and I get a great work-out fighting it. But you get
fed up quite fast.
What Iīm trying to find is some Online shop that has cheap shiping.


--- In speedsolvingrubikscube@y..., eligeon <no_reply@y...> wrote:
> Um... Do you have a walmart over there?  That is where I got mine.
> They should have Oddzon Rubik's cubes, and they turn out incredible
> speeds after you work on them.

#540 From: planet_katsu
Date: Wed Jul 3, 2002 6:01 am
Subject: Play with Rubik Player
planet_katsu
 
Hello, everybody!

I made the page of "Play with Rubik Player".
http://www5.gateway.ne.jp/~katsu-k/a_others.html

For non-frame browser.
http://www5.gateway.ne.jp/~katsu-k/rubik_player.html

Please have fun!

Thanks,

Katsu

PLANET PUZZLE
http://www5.gateway.ne.jp/~katsu-k/

#541 From: "papegoja99" <dani@...>
Date: Wed Jul 3, 2002 6:18 am
Subject: Re: Boomerang! A new solution is born!
papegoja99
Send Email Send Email
 
Hi,
I checked your site. And I have some tips for your design.
First of all, change the color of the text. Blue and black does look
cool, but itīs realy hard to read. Especially when you want to sitt
back and hold your cube. Try using white instead.
Second, has Iīm a beginner in cubing Iīve been looking around ALOT on
different sites. The ones I never look twice at are the ones that use
the Java cube. Itīs impossible for us beginners to keep upp with the
cube that moves. So if your purpose is educationall you should use an
other method.
Take a look at
http://internet.oit.edu/~cardwelc/rubiks/rubiks.htm
This method of showing the moves are the easiest Iīve found so far.
Easy to print an bring along on the bus.
Donīt get me wrong. I realy think your solution is interesting! And
would like to check it our more. But like i wrote, itīs to hard for
us beginners to keep up.
And donīt diss us beginners! We will overcome and excel with
remarkable times!!! :-)

-------------------------------------------

--- In speedsolvingrubikscube@y..., eligeon <no_reply@y...> wrote:
>    I have been cubing for nine months now and have a best time of
> 49.03 seconds.  I got this time using an original method that you
can
> see here:  http://www.geocities.com/eligeon      Please tell me
your
> thoughts!  It is pretty original and is categorized as a layer by
> layer system.

#542 From: "papegoja99" <dani@...>
Date: Wed Jul 3, 2002 6:32 am
Subject: Re: big cubes
papegoja99
Send Email Send Email
 
Check out
http://www.geocities.com/cmhardw/20cube.html
He claims he used an applet from
http://www.oinkleburger.com/Cube
You can mail him and ask your self
foozman17@...

----------------------------------------

--- In speedsolvingrubikscube@y..., j_rueth <no_reply@y...> wrote:
> Is there a place on line where i can play with a big cube(like a
> 20x20) if so where can i play with one?
> Jake

#543 From: bobbit_at_mac_dot_com
Date: Wed Jul 3, 2002 9:55 am
Subject: Online solving
bobbit_at_ma...
 
Try this:

http://www.rubiks.com/flatcubemain.html

It's a 3xCube, only a beta by the look of it.  I think it's strange that
they've not picked a standard colour layout.  I think it's hard to
solve but maybe I'd get used to it.  Tell me what you think.

#544 From: GameOfDeath2
Date: Wed Jul 3, 2002 11:40 am
Subject: Re: Periodicity of algorithms
GameOfDeath2
 
--- In speedsolvingrubikscube@y..., larrpas <no_reply@y...> wrote:
> Here are the results of my computations : the maximum periodicity
for
> an algorithm of a given lenght and an example for each one :
>
> Using only single turns (R, R', U, U', F, F', L, L', D, D', B, B') :
> 1 move : 4 (R) (Don't need a computer for this one!)
> 2 moves : 105 (R U)
> 3 moves : 360 (R U B')
> 4 moves : 420 (R U L D')
> 5 moves : 840 (R U R F' D')
> 6 moves and more : 1260 (R U L' B R L')
>
> Using only double turns (R2, U2, F2, L2, D2, B2) :
> 1 move : 2 (R2)
> 2 moves : 6 (R2 U2)
> 3 moves and more : 12 (R2 U2 F2)
>
> Using both single and double turns :
> 1 move : 4 (R)
> 2 moves : 105 (R U)
> 3 moves : 360 (R U B')
> 4 moves : 840 (R U F2 B')
> 5 moves and more : 1260 (R U2 D' B D')
>
> Thanks to GameOfDeath (GOD?)

(Definitely not.)

> for his posts on this subject.
> Is there a good book about the mathematics of the Rubik Cube?
> LP
>
>
>
> --- In speedsolvingrubikscube@y..., GameOfDeath2 <no_reply@y...>
> wrote:
> > --- In speedsolvingrubikscube@y..., ilovemycube <no_reply@y...>
> > wrote:
> > > Hi friendz,
> > >
> > > David Singmaster's book shows RF2R'UB' (found by J.B.
> > Butler) as an
> > > algorithm (the shortest?) of the maximum order 1260.
> > >
> > > > The 72 possibilities in full are
> > > >
> > 1,2,3,4,5,6,7,8,9,10,11,12,14,15,16,18,20,21,22,24,28,30,33,35,
> > > >
> > 36,40,42,44,45,48,55,56,60,63,66,70,72,77,80,84,90,99,105,110
> > > >
> > ,112,120,126,132,140,144,154,165,168,180,198,210,231,240,25
> > > > 2,280,315,330,360,420,462,495,504,630,720,840,990,1260.
> > >
> > > The Dutch 1981 book "De Hongaarse kubus voor
> > doordraaiers" by Frans
> > > Schiereck shows some examples of different orders:
> > > 1 ME2M'DM'E2MD
> >
> > Easier is to do nothing at all! (or R4) for instance)
> >
> > > 2 RLU2R'L'
> >
> > Easier is R2
> >
> > > 3 MD2M'D2
> > > 4 FDF'
> >
> > R is about easiest here.
> >
> > > 5 MDM'D'
> > > 6 U2R2
> > > 8 RE
> > > 9 F2UR
> > > 12 F2R2U2
> > > 15 MUSU'
> > > 20 FDRM
> > > 21 RU2BU2
> > > 24 UL2R2
> > > 28 L'URU'
> > > 30 U2R
> > > 35 RU2L'U2
> > > 36 R2UF
> > > 40 LBS2D
> > > 42 UD2MSMB
> > > 45 FD'F'R'D'R
> > > 60 U2RD2L
> > > 63 UR'
> > > 80 DLB
> > > 84 DUL
> > > 90 RDL
> > > 105 UR
> > > 120 BRE
> > > 144 MFBD
> > > 168 U2RD
> > > 180 UFBLR'
> > > 315 URDL
> > > 336 U2R2UR2UFBLR (incorrect? is not on Richard's list,
> > maybe 360)
> >
> > Yeah, I messed up with that one. Not sure why. It can be
> > achieved from a 4 and 6 cycle of edges and a 7 cycle of corners.
> >
> > > 360 FU'R
> > > 396 UDR2EL (incorrect? is not on Richard's list)
> >
> > This is only possible because you're using E in your list of
> > generators. If you only use U, D, F, B, R and L then 396 is not
> > possible (the above move does indeed take 396 sequences to
> > come back to the start). It's to do with E not fixing the
position
> of
> > the centres.
> > In the set of generators U, D, F, B, R and L if we are to have
> > 396=11*36 then there must be an 11 cycle of edges. That leaves
> > a factor of 36. The edges contribute either 11 or 22 (neither of
> > which is divisible by 4) so we must have that the corners are
> > fixed every 36 moves. To get a from the corners requires a cycle
> > of length 4 or a cycle of length 8 (but then we get a factor of
8,
> > which we don't need and can't get the 3s either). So we must
> > have a 4 cycle and since the edge permutation is even we either
> > have another 4 cycle or a 2 cycle as well. This leaves no room
for
> > a 3 cycle so we can only pick up a factor 3 by corner orientation
> > aand we can't get a factor of 9. So 396 shouldn't be on my list
> > (although it can be on yours since you're allowing the move E).
> >
> > If you look at UDR2EL you'll see that after 6 moves the corners
> > are correctly positioned, if not correctly oriented, relative to
> the
> > original centres which come back into position every 4 moves.
> > So every 24 moves the centres are back in their positions and so
> > are the corners (although they are not correctly oriented). The
> > corners are correctly positioned and oriented every 18 moves so
> > the corners and centres are correct every 36 moves
> > (36=lcm(18,4)) and after 36 moves you can see that the edges
> > are 11 cycled. So after 396 moves everything is in place. I
didn't
> > check that the orientations of the edges are OK after 396 moves
> > but I guess they are given that that is the given move.
> >
> > > 840 SERFD
> > > 1260 RF2B'UB' (incorrect? differs from J.B. Butler's solution)
> > >
> >
> > This one should be easy to check. By doing RF2B'UB' I can see
> > in the edges a 7 cycle and 2 2 cycles (of which in one there is
> > one edge flipped and the other not) and in the corners a 5 cycle
> > and a 3 cycle (containing one twisted corner) so this move does
> > have order 1260.
> >
> > On the other hand  RF2R'UB'  fixes the FR and DL edges so it
> > can't have the required cycle structure so it doesn't have order
> > 1260.
> >
> > > There may be some typos.... Sorry that I did not check any of
> > them. ;-
> > > )
> > >
> > > Have fun!
> > >
> > > Ron
> > > http://www.speedcubing.com

#545 From: GameOfDeath2
Date: Wed Jul 3, 2002 11:41 am
Subject: Re: big cubes
GameOfDeath2
 
--- In speedsolvingrubikscube@y..., j_rueth <no_reply@y...> wrote:
> Is there a place on line where i can play with a big cube(like a
> 20x20) if so where can i play with one?
> Jake

Yeah. oinkleburger.com - but maybe you should try 21x21x21 instead.
Nobody's set a time for that yet.

#546 From: bobbit_at_mac_dot_com
Date: Wed Jul 3, 2002 11:45 am
Subject: Re: big cubes
bobbit_at_ma...
 
--- In speedsolvingrubikscube@y..., GameOfDeath2
<no_reply@y...> wrote:
> --- In speedsolvingrubikscube@y..., j_rueth <no_reply@y...>
wrote:
> > Is there a place on line where i can play with a big cube(like a
> > 20x20) if so where can i play with one?
> > Jake
>
> Yeah. oinkleburger.com - but maybe you should try 21x21x21
instead.
> Nobody's set a time for that yet.


Hi Dr.C

Did you get to the Isle yet?

#547 From: GameOfDeath2
Date: Wed Jul 3, 2002 12:49 pm
Subject: Re: big cubes
GameOfDeath2
 
--- In speedsolvingrubikscube@y..., bobbit_at_mac_dot_com
<no_reply@y...> wrote:
> --- In speedsolvingrubikscube@y..., GameOfDeath2
> <no_reply@y...> wrote:
> > --- In speedsolvingrubikscube@y..., j_rueth <no_reply@y...>
> wrote:
> > > Is there a place on line where i can play with a big cube(like
a
> > > 20x20) if so where can i play with one?
> > > Jake
> >
> > Yeah. oinkleburger.com - but maybe you should try 21x21x21
> instead.
> > Nobody's set a time for that yet.
>
>
> Hi Dr.C
>
> Did you get to the Isle yet?

Yeah, I'm writing in my lunch break (almost finished it now).

Messages 517 - 547 of 42768   Oldest  |  < Older  |  Newer >  |  Newest
Add to My Yahoo!      XML What's This?

Copyright Đ 2010 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines NEW - Help