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Random Cubing Discussion

MaeLSTRoM

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need to make a ECE pair to finish the 3x3x4
need to pair the rest of the edges and fix EO parity and fix CP for 2gen
Whoops, forgot to put that in. I was thinking more for cubes>=5x5, I think it would be quite slow on 4x4 relative to reduction/K4/whatever...

Actually Nevermind, just gave it a go, and its much slower than reduction.
 
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MaeLSTRoM

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Generally speaking direct solving methods get worse as the cube size increases.
That's probably true, it was just a random Idea, hence the random discussion thread.

And another thing: If on an even layered cube, you placed the corners in a solvable position, is every combination of the other peices solvable?
 

Kirjava

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And another thing: If on an even layered cube, you placed the corners in a solvable position, is every combination of the other peices solvable?
Yep.

Anyway, I don't think every direct solving method suffers as badly.

Cage is pretty bad because of all the centre comms. I think K4 and Redux give comparable times on 7x7x7. If I could do centres and pair four edges as fast as dan our times would be about the same.
 

qqwref

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Even I don't do this. 6x6x6 sucks to turn when it isn't on qCube.
Surely some people have good 6x6x6s, though, right? I mean, considering the tps some people get.

Would this be a good way to solve big-cubes:

3 centres around one corner
Pair the 3 edges + 1 corner to make a N-1xN-1xN-1 block
Finish centres
Pair up one CE pair so that only R&U are left to solve
Solve petrus-style 2-Gen stage
Nope. Once you've got those 3 centers made, there's no way to pair edges other than the standard reduction style (2 or more at once). So this can't be more efficient than Reduction+Petrus, and will probably be worse, because the order of steps doesn't always let you take advantage of easy cases on future centers/edges.


Roux-by-4/KBCM doesn't work so well on bigger cubes, because the centers+columns with <2R,3R,...,U> step starts to break when +centers get involved. As far as K4 on 7x7x7, no clue whether this can compete with Redux on the highest level (I'd have to try it on the sim a few times but I can't think of a nice hand position for it). It's entirely possible that Dan's edges are lacking in lookahead, or that Kir's edge comms have very high tps.
 
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...such as lighting ones always being on the left
when I see a lightning bolt I always AUF, so the oriented Corner is at UFL (Sune case) or UBL (Antisune case)
The Sune/Antisune case can be predicted by looking at any corner. And my algs are that way that I don't need additional AUF afterwards.
 

Godmil

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I forgot to mention that I'm also doing the same thing with PLL. a 1x3 block (Ja,Jb,F) always goes on the Left hand side (Except U-perms that are easy enough to spot and I solve from two orientations each anyway), 2x2 goes in UFL (I changed my A perms so that they fitted my V-Perm orientation, so I just place the block and know the PLL based on the stickers to either side of the block). All I need to do is redo my R-Perms (which I've never been happy with) so that they have headlights on the left and then they'll match up with my G-Perms.
 

Rpotts

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I thought that would be useful back when I was finishing PLL, but it limits your alg choice too much. Just get used to recognizing from multiple angles, after hundreds of solves you sorta just "auto-AUF" without really thinking. You should be able to recognize V perm by simply seeing a 2x2 block + diagonal corners (opp stickers on each face) or by seeing the pattern it makes on the other side of the block.
 

Godmil

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oh, I'm getting better at pll recognition, but I suck at some angles (the non block faces of V-perm, or any G-perm angle where you can't see the 2 block), I think I'll need to spend time properly working on 2 face recognition.
 

TMOY

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Cage is pretty bad because of all the centre comms.
Lol, there's much more in solving centers last than just niklas niklas niklas. Learning to use 4-move comms and thus reducing the move couny by a lot allows to go much faster than you seem to think.
 

DavidWoner

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I forgot to mention that I'm also doing the same thing with PLL. a 1x3 block (Ja,Jb,F) always goes on the Left hand side (Except U-perms that are easy enough to spot and I solve from two orientations each anyway), 2x2 goes in UFL (I changed my A perms so that they fitted my V-Perm orientation, so I just place the block and know the PLL based on the stickers to either side of the block). All I need to do is redo my R-Perms (which I've never been happy with) so that they have headlights on the left and then they'll match up with my G-Perms.
This kind of stuff will hurt you in the long run and probably not help in the short run.
 

Kirjava

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Lol, there's much more in solving centers last than just niklas niklas niklas. Learning to use 4-move comms and thus reducing the move couny by a lot allows to go much faster than you seem to think.
My main method used to be cage, no need to patronise.

I was talking about the problems with using so many inner slice moves that alternate between adjacent axis. Not great to fingertrick.
 
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