Easy / Lucky / Hard / Weird scrambles Thread

[cmhardw]

Very interesting Chiris! Would you have noticed that in a timed speedsolve?

Maybe not. I have sometimes gotten the H OLL, or the "fish" one with two adjacent ones flipped, and that a BLD flip alg would solve the LL because everything was in place. I had one of the "P" OLLs (not the good one) and I don't know if I would have noticed that everything was placed if it was a true speedsolve.

If it were a true speedsolve I would definitely have done the BLD alg to solve the last two F2L pairs with the pieces solved but the corners flipped. I like it even better when the corners flip opposite directions because you just do an x2 rotation and 2 sunes, but the 3 corner flipper I think is faster than doing the standard alg for that case twice if they both flip the same way.

So, to answer your question, no I probably would not have noticed if I had gotten that in a true speedsolve, which means I could have seen before as well, but never have known. Based on the very reasonable probability of having been cubing as long as I have and only getting this case once, though, means that this very likely could be the very first time I have ever gotten this case.

Chris

 

[Mike Hughey]

I just had a really crazy, improbable, occurrence happen on my cube.

I once had a case where my entire LL was 2 edges to flip and I realized it. So I flipped them. I think that's the closest I've ever come to this, though. Very cool story, Chris!

A couple years back I estimated that I've probably done about 400,000 solves in my lifetime, so by today I might be around 450,000.

Wow, that says my problem really probably is lack of practice. My CCT (which covers about 4 1/2 months now) has 4500 3x3x3 solves in it. I've probably done about 2000 more during that time, off of CCT. I've been working harder on 3x3x3 lately than I ever did before, so if I just multiply 6500 (the probable amount for the past 4 1/2 months) times 7, I should get a quite conservative approximation (conservative = overestimate) of the number of solves I've done: 45500. Meaning you've done about 10 times as many solves as I've done. No wonder I'm terrible.

 

[ianini]

F' L B' L2 D2 F2 L2 F2 R D2 L B R' L U2 R F2 B L' D R' B2 D' F' L'

Blue cross anyone? Sucks that I use white+yellow...

 

[cmhardw]

I just had a really crazy, improbable, occurrence happen on my cube.

I once had a case where my entire LL was 2 edges to flip and I realized it. So I flipped them. I think that's the closest I've ever come to this, though. Very cool story, Chris!

The probability of having the LL be only 2 pieces to flip (either corners or edges, and with or without setup turns) is:

4*[6 + (6*2)] / 62208 = 1/864 so that is also a very improbable occurrence!

A couple years back I estimated that I've probably done about 400,000 solves in my lifetime, so by today I might be around 450,000.

Wow, that says my problem really probably is lack of practice. My CCT (which covers about 4 1/2 months now) has 4500 3x3x3 solves in it. I've probably done about 2000 more during that time, off of CCT. I've been working harder on 3x3x3 lately than I ever did before, so if I just multiply 6500 (the probable amount for the past 4 1/2 months) times 7, I should get a quite conservative approximation (conservative = overestimate) of the number of solves I've done: 45500. Meaning you've done about 10 times as many solves as I've done. No wonder I'm terrible.

Well, keep in mind a couple of things. From what it sounds like I've been cubing with the intent to improve longer than you've been cubing with the intent to improve. That says a lot. Also, for my freshman and sophomore years in college I usually practiced about 2-3 hours a day on average, my junior year I practiced about 3-4 hours per day average, and for senior year I practiced minimum 4 hours per day unless I was sick or on a trip home or had an exam or project due. So the bulk of all of the solving I have ever done I accumulated in college Nowadays I am happy if I do 30 minutes per day

Chris

 

[Mike Hughey]

The probability of having the LL be only 2 pieces to flip (either corners or edges, and with or without setup turns) is...

Oh, yeah, I didn't think of that - glad you included it. I don't remember if it also needed an AUF or not.

 

[Mike Hughey]

Scramble with cross on top.

Scramble: D U L' R D L' R2 F' D R2 U' L' R2 D' B2 L' R U' R2 B' F2 L R2 D' R2

Spoiler

z2 L F' R' F' D
U' L' U L R U R'
y' L' U L
d' L' U' L
R' U' R
U' R U R' U R U2 R' (Sune)
R' U R' U' R' U' R' U R U R2 (U perm)
The way I solved it, I think it's technically nonlucky (although it was really outrageously lucky with all those 3-move pairs).

I got a 14.37. My first sub-15; only my second sub-16.

 

[Anthony]

R' U R' U' R' U' R' U R U R2 (T perm)

Right algorithm, wrong name.
Congrats Mike!
Too fast.

 

[Mike Hughey]

R' U R' U' R' U' R' U R U R2 (T perm)

Right algorithm, wrong name.

Funny - I guess that's what happens when you get too excited about finally breaking 15 seconds. (I can't believe I did that.)

 

[nlCuber22]

Cross on U


F2 L2 D' F D' L U L D2 B2 U' F' L' D2 B' U2 R L B R2 F' R2 F L2 D'

Solution

Spoiler

x2 y'
U R U' R' U' y L F' L' U' R U' R' F R' F' y R'
U' R U' R'
y U R U' R'
U F U R U' R' F'
U' M2' U' M2' U2' M2' U' M2

Far too easy.

 

[mmMarco17]

D R2 B U' R' L U F2 D' R2 U' R2 D2 B R2 U F2 R' F D L' R' F B2 R'

cross on U

 

[Olivér Perge]

R' D' B' F2 L R' F' L R D L' D U2 F D' B F' D' U L' R2 U' L D U2

Cross on U, easy double xcross.

 

[joey]

Oliver.. I can't find anything :/

 

[Olivér Perge]

Oliver.. I can't find anything :/

Sorry, pasted the wrong scramble... I cannot find the real one. :S My bad!

 

[joey]

Hehe, no wonder

 

[TheMachanga]

U2 R2 U2 R2 F' L2 D2 F2 L2
2x2 scramble
Solution:
x' U2 R2 U R2

 

[Owen]

2x2:

U2 F2 R U' R U' R U'

 

[trying-to-speedcube...]

R' L2 B R' F' D2 U' L2 U2 R2 D' R2 F2 L' R2 B D' L' R' D2 B2 U2 B2 D F2

Spoiler

z2 U2 R' F L2
d R U' R' L' U' L
U L U' L' d' L F' L' U F

 

[kooixh]

2x2:
R' U R2 U2 F2 R' U R2 F' U' R F' U2 F U

I can't work out the optimal solution and don't know any programs to do it... Any help please?

Wow, this is an interesting scramble. So interesting it finally got me to go run Cube Explorer for the first time. Like I say, it's the first time I ever tried it, so I may be missing something, but I couldn't figure out how to get it to ignore centers (so as to truly emulate a 2x2x2). But it did seem to indicate the best it could do without ignoring centers was 9 moves, which is pretty shocking.

So then I tried Rubix, which is supposed to do optimal 2x2x2 solves, and it also came up with 9 moves.

So apparently this is very much not an easy scramble, despite what it looks like!

Oh, and on the ridiculous scrambles above I got:

do this one in under 3.12s and you have beat erik...
U' B2 L2 D2 F' L U' B2 F R' F' R2 D2 B2 U' F2 U' R' D2 R U R' B U B'
CROSS ON BOTTOM

8.28

D2 U B D' L' R U2 B2 R' L U2 F2 D B' U' F2 R2 F2 D2 F2 R2 F2 R U' R

0.70

0.87 (Can you believe that's ME?!? I didn't know I could make 3 turns that fast!)

0.60 OH

 

[Escher]

ZZ PB (15.68)

Scramble: U' F2 L2 B2 L2 D' R2 B2 D' U2 B2 L2 B2 R' B2 F2 D' B2 U R U'

EOLine: D2 R' D'
F2L:
1: U2 R2
2: R U2 L2
3: U2 L U L'
4: U' R' U R U' R'
LL: M2 U' M' U2 M2 U2 M' U M2

No rotation FTW!

I got 6.28 full step:

D2 R' D'
U2 R' U2 L2 U2 R'
L U R U' R' U L'

r U R' U' r' F R F'
T perm

= 38 moves = 6.05 tps

awesome.

 

[trying-to-speedcube...]

(-3,2) / (4,-3) / (6,6) / (1,-3) / (-4,0) / (-3,0) / (6,-3) / (-2,0) / (-4,-4) / (-5,0) / (0,3) / (2,0) / (-5,-2) / (-3,-3) / (0,3) / (0,-4) /