4x4 LL algs

[David Pritts]

Hey,

I'm having trouble finding 4x4 last layer algs. I'm aware that only a handful of algs are necessary (maybe a minimum of two?), but I'm having trouble finding any of them.

The only one I have is the alg to orient one edge.

So at the very minimum, I need an alg to switch two edges, but I cannot find one. The ones on Chris Hardwick's page don't seem to work..

example: r2 U2 r2 U2 u2 r2 u2

is supposed to switch 2 edges... but it doesn't? Did I execute it wrong, multiple times?

What do I do?

Also, any general suggestions for getting better at the 4x4? (i do the standard method I guess, solving centers, and pairing edges).

Thanks,

David

 

[dougreed]

That alg works. You may be misinterpreting the notation. The 'r' and 'u' moves are not double-layer turns as they are notated on the 3x3x3. To execute r, you simply turn the slice next to the R face 90 degrees clockwise in the direction of an R turn. Same for the u turn.

-Doug

 

[David Pritts]

Yeah I was definetely turning both of them... thanks.

It's confusing though.. don't some people use "d" to mean bottom two faces both turn? That's how I've been interpretting them, and I got Chris' alg -- the one which will solve the final 2 edges -- to work, and I know it has some of those kinds of turns.

Whatever, you've solved my problem, thanks.

David

 

[dougreed]

Glad to help. There is a definite notation inconsistency there, but I think it has gone too far unchecked to make any real difference . Just know that for any cube larger than the 3x3x3, a lrufbd move is just the slice next to its LRUFBD counterpart.

-Doug

 

[Joël]

Originally posted by David Pritts@Apr 5 2006, 04:44 AM
Yeah I was definetely turning both of them... thanks.

It's confusing though.. don't some people use "d" to mean bottom two faces both turn? That's how I've been interpretting them, and I got Chris' alg -- the one which will solve the final 2 edges -- to work, and I know it has some of those kinds of turns.

Whatever, you've solved my problem, thanks.

David

Hey Patrick,

There is some inconsistancy. Usually, for the 3x3, a small letter means a double layer turn, and for big cubes, is means a slice move (unless anyone says otherwise).

During competitions however, scrambling of the larger cubes is done with double layer turns, because its faster, and the cube will still be scrambled randomly.

- Jo?l.