Really tough challenge for 3x3x3

[AvGalen]

This is the puzzle that goes with this problem see fused 3x3x3 http://www.speedcubing.com/ton/fused.htm

Nope, not at all.

Wow, even Ton doesn't understand the challenge.

My next really tough challenge will be......to explain what the challenge is

I am still waiting for someone to post a real method

 

[Stefan]

Are cube rotations around the DBL-UFR axis allowed?

 

[Ville Seppänen]

Well, I solved it after maybe 20 minutes. I first solved corners, then somehow solved centers, then I used a 3-cycle alg for edges. It was annoying to flip 2 edges.

 

[somerandomkidmike]

I am excited to try this. I think I'll bring my cube to school (it's not like that's any different from other days).

 

[AvGalen]

Are cube rotations around the DBL-UFR axis allowed?

Only if you change the challenge to "r moves only"
Seriously, that would only change the perspective, not the challenge so I don't see any reason why not

 

[Mike Hughey]

I got as far as a 2x2x2 block, and then I was done. As in...not done =D

You are a wise man
and getting a 2x2x2 block is quite impressive already

I got that far too (with the 2x2x2 block opposite the fixed corner), and even got the block in the right place relative to the fixed corner, in six and a half minutes. And I even got lucky and had another C/E pair attached to the 2x2x2 block. But after playing with that, I decided it's probably not the way to solve it and gave up, for now at least. (Obviously it's not possible to keep the 2x2x2 block together while solving the rest of it.)

This seems particularly tough to me since I almost never do wide turns when speedcubing - I'm almost completely unfamiliar with how wide turns work, so it's all very new to me.

 

[qqwref]

My next really tough challenge will be......to explain what the challenge is

I was going to say... the toughest challenge anyone has faced in this thread is the challenge of trying to get people to understand what you are talking about!

PS: I managed to solve the corners (and centers too with a bit of prodding). Also got a 2x2x2 block around DBL (in a separate solve), not that that's at all helpful.

PPS: I found a TEN-edge-flipper! (r' f r f' u r u' r')*lots [I think it's 8 reps but not sure]

 

[Tetris Cube]

I'm not quite sure I understand this.

It's like an R U F solve of a fused cube, but double layer turns only? In that case, this is extremely difficult... How would you approach this? R U F solves aren't very hard, but r u f is insane.

 

[d4m4s74]

got it in 10 minutes

but It was kinda lucky

Uhm, unless you get the equivalent of a last layer skip you won't solve this challenge "kinda lucky"

For everyone that got it, could you leave a clue how you did it? And a clue should go between

Spoiler

-tags

Spoiler

with kinda lucky I mean one edge pair was already solved when putting in the RB edge (kinda like an X cross)

I only use R and U for OLL and I had a Y perm for the pll which I do with just R, F and U

so actually it was like a normal solve

I'm trying it again right now, got to the PLL in about one minute and now I'm stuck with an A perm (the alg I know uses B2)

edit, I redid the OLL and got a perm I could do with an Y perm and a 3 edge cycle (Thank you for the 2gen alg arnaud)

another edit, I misread your first post and thought it said R U F instead of r u f

I'll retry

 

[AvGalen]

My next really tough challenge will be......to explain what the challenge is

I was going to say... the toughest challenge anyone has faced in this thread is the challenge of trying to get people to understand what you are talking about!

PS: I managed to solve the corners (and centers too with a bit of prodding). Also got a 2x2x2 block around DBL (in a separate solve), not that that's at all helpful.

PPS: I found a TEN-edge-flipper! (r' f r f' u r u' r')*lots [I think it's 8 reps but not sure]

That "* lots" sounds like my solution

And yes Tetris Cube, this challenge is "insane". That is why I only expect some people in the world to be able to do this. Ville, qqref, StefanPochmann and Mike are some of them. I can think of about 10 others on this forum. The rest "doesn't stand a chance" OR will learn a lot by doing this (or the simpler) challenges

 

[MTGjumper]

Quick question: can all of the possible permutations of the cube be reached this way? (I'm leaning towards yes...)

Edit: Corners done...

 

[Stefan]

Quick question: can all of the possible permutations of the cube be reached this way? (I'm leaning towards yes...)

No.

And I just remembered a bit more about an earlier time where we did this. Only very vaguely, though.

 

[MTGjumper]

So, what percentage of permutations can be reached?

 

[deco122392]

wow after 5 min of evil hellish tourtcher i now have the corners done. altho now im just fallowing a trend mindlessly and i really have no idea how i will continue from here
ok now i think i have a solid way of finishing the corners using a decent amount of thinking. (wooo centers just finished themselves luck me(= ) ok finish corners on D simple, i do them in this order

DBL:done
DLF: using ruf
DBR and DRF: using ur

then i look at the orientation and permutation of the ll corners and use the Y perm (feels simple and is decently affective.) and combinations of sune to do the oll soooooo i permute first.
and here are som helpfull litte algs ive used

(haha this a very thought provoking chalange.)

btw the sune is double turn and so is the y perm

edit: and this version of the j perm(r u2 r' u' r u2 f r' f' r) to swap the UBR and URF corners (=

 

[Stefan]

So, what percentage of permutations can be reached?

Explain my earlier "no", then I might answer this one (though you might then be able to answer it yourself).

Oh and the earlier time I mentioned, I think the task was to solve a keychain 3x3x3 by pulling on the keychain. That's equivalent to the puzzle here. I think I made up a complete method back then, but I can't find it anymore. I believe it was on the yahoo group, maybe the twistypuzzles forum. Anyone else remember that and can find it?

 

[Stefan]

Whoa... found it, or rather "them". The steps:

Searching "keychain equivalent cube" in the yahoo group finds:
http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/38029
That's a thread I started about <u,r,f> in 2007. I might read it again.

Then I checked out my own reply:
http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/38043

Contains a link to the earlier discussion with the keychain:
http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/15595
Wow, 2005. Back then I still used smileys.

In that thread there's this message of Jaap:
http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/15604
Which points back again to an even earlier discussion in 2003:
http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/4419

Looks like we have this puzzle every odd year.

 

[Robert-Y]

Erm I've found an alg to orient 4 edges .... : Do (r u') 126 times
(Might be wrong, but that's what I got)

 

[AvGalen]

Quick question: can all of the possible permutations of the cube be reached this way? (I'm leaning towards yes...)

No.

And I just remembered a bit more about an earlier time where we did this. Only very vaguely, though.

I was also wondering if all possible permutations could be reached. I didn't see why not at first, but if you try this challenge you will probably find out

 

[Lord Voldemort]

That "* lots" sounds like my solution

And yes Tetris Cube, this challenge is "insane". That is why I only expect some people in the world to be able to do this. Ville, qqref, StefanPochmann and Mike are some of them. I can think of about 10 others on this forum. The rest "doesn't stand a chance" OR will learn a lot by doing this (or the simpler) challenges

That really motivated my to try to find a solution.
I'll see, perhaps I may be able to solve it. I doubt it though.

 

[AvGalen]

Erm I've found an alg to orient 4 edges .... : Do (r u') 126 times
(Might be wrong, but that's what I got)

You are not wrong, but (r u')*63 is more interesting