Hand scrambles vs Computer scrambles

[Faz]

Hey guys, its me again

Just to let you know i am usually getting 1/5 solves a sub 30 and i have a new pb.

19.31 with a comp scramble. PLL skip.

I can usually get around 34 average

 

[royzabeast]

I don't see the point in doing a hand scramble unless you don't have access to a computer...

i agree. Most computer scramblers mix up the cube so it can be solved in no more than 7 moves. whenever I hand scramble the cube it usually takes about 10-11.

I don't think that you are telling the whole truth.

It's impossible for a cross to take over 8 moves.

 

[Ellis]

I don't see the point in doing a hand scramble unless you don't have access to a computer...

i agree. Most computer scramblers mix up the cube so it can be solved in no more than 7 moves. whenever I hand scramble the cube it usually takes about 10-11.

I don't think that you are telling the whole truth.

It's impossible for a cross to take over 8 moves.

Impossible? No. I can do a cross in 10 moves.

 

[Faz]

LOL, I was such a noob. (Still am)

 

[IamWEB]

lol, I was thinking 'wow, faz has improved a lot!'

 

[Johannes91]

It's impossible for a cross to take over 8 moves.

Impossible? No. I can do a cross in 10 moves.

I can do it, too! http://laire.dy.fi/t/cross/solver.pl?scramble=RU&N=10

 

[Bryan]

I don't see the point in doing a hand scramble unless you don't have access to a computer...

i agree. Most computer scramblers mix up the cube so it can be solved in no more than 7 moves. whenever I hand scramble the cube it usually takes about 10-11.

I don't think that you are telling the whole truth.

It's impossible for a cross to take over 8 moves.

Impossible? No. I can do a cross in 10 moves.

Yes, if any of us try hard, we can probably pull off a 25-move cross.

 

[AvGalen]

Nice programming Johannes. I would like to know how it works. http://laire.dy.fi/t/cross/solver.pl?scramble=RUFBDLB2R'UDF'&N=1000 works so fast and I don't see any obvious cancelling sequences in there

Yes, if any of us try hard, we can probably pull off a 25-move cross.

If I try really hard, I can probably do that indeed. I might get "rest of cube-skip" though

 

[tikva]

Nice programming Johannes. I would like to know how it works. http://laire.dy.fi/t/cross/solver.pl?scramble=RUFBDLB2R'UDF'&N=1000 works so fast and I don't see any obvious cancelling sequences in there

Yes, if any of us try hard, we can probably pull off a 25-move cross.

For N = 1000, he can just do 992 random moves and then find a cross with a depth-first search of maximum depth 8 (not stopping if the cross is found at depth <8). Right?

 

[KubeKid73]

http://laire.dy.fi/t/cross/solver.pl?scramble=LR'&N=1000 Lmao. Just do M or M' I forget which one goes the same direction as R'.

 

[EmersonHerrmann]

When I read the post by Feliks and he said his pb was 19 with a PLL skip, I knew something was askew xD

 

[Johannes91]

For N = 1000, he can just do 992 random moves and then find a cross with a depth-first search of maximum depth 8 (not stopping if the cross is found at depth <8). Right?

That'd work, but it might also solve a cross before N moves.

I used a simple depth-first search of maximum depth N that tries the moves at each depth in a random order to make the solution look interesting and backtracks if there's a solved cross too early.

The running time varies a lot; from <0.1s to >8s. The value of N doesn't matter much, just how much backtracking is needed when it gets to N moves.

M or M' I forget which one goes the same direction as R'.

M

 

[rahulkadukar]

Well just scramble with your hand for 30 seconds

 

[JE007]

Handscrambles

Half of the time that I'm cubing, I not time my solves.
Because of that I do handscrambles a lot..
But the last few days I just scramble and suddenly 2 pairs are in place or the full F2L is solved again.

Has anyone the same problem?
I think I just going to use computer scrambles more or pay more attention while scrambling.

 

[Schmidt]

I've had a few solved Pyraminx when I was done "scrambling" without paying attention.

 

[PeelingStickers]

whenever I handscramble I look away. if the cube seems half solved then I mix it up a little more just to insure it's not a setup solve.

 

[AvGalen]

to handscramble I almost only use R U on every layer, so on a 5x5 it would look like this:
RU
2R 2U
3R 3U
4R 4U
then throw it in the air and repeat just as many times as the cube has layers. Just add a few random turns in there somewhere and you will always get a nicely scrambled cube

 

[cubernya]

to handscramble I almost only use R U on every layer, so on a 5x5 it would look like this:
RU
2R 2U
3R 3U
4R 4U
then throw it in the air and repeat just as many times as the cube has layers. Just add a few random turns in there somewhere and you will always get a nicely scrambled cube

Basically what I do, minus the RU part. I just scramble it, toss it in the air once, and repeat.

 

[AvGalen]

You should give that R U layer scrambling a try. You will be surprised how well it scrambles a cube with a low amount of really fast turns