LL-Skip in competition

[Worms]

hi!!!

I have a question
Anybody had got a last layer skip in a oficial competition???

 

[gillesvdp]

YES !

Check my 4th time in the 5x5 final at the European Championship 2006 ^^

 

[badmephisto]

its funny that PLL skip is technically supposed to happen a little more than 1/22 times, but it seems way lower than that most of the time. I get it so rarely. And entire LL skip happened to me only once.

 

[Worms]

After 2 years cubing, i have 2 LL-SKIP this summer

My little cousin got one in his first competition, here is the video:

http://www.youtube.com/watch?v=Yd7rySV9EwQ

 

[Johannes91]

its funny that PLL skip is technically supposed to happen a little more than 1/22 times, but it seems way lower than that most of the time.

It's 1/72.

 

[CorwinShiu]

It's 1/72.

What's the probability for both?

 

[Johannes91]

What's the probability for both?

You mean OLL and PLL?
http://www.google.com/search?hl=en&q=PLL+OLL+skip+chance

1/72 * 1/216 = 1/15552

 

[Jack]

That means that Worms should have had to solve about 31104 cubes this summer!

 

[badmephisto]

It's 1/72.

1/72 ? Where is that from... Hmmm... Do you count it a PLL skip if all you need to do is a U or U' to finish the cube? 1/72 sounds like the chance of you getting exact PLL skip without even needing to adjust top layer

 

[Johannes91]

There are 4!*4! / 2 = 288 even permutations. Four of those are considered a PLL-skip (solved, U, U2 and U').

4/288 = 1/72

 

[Worms]

That means that Worms should have had to solve about 31104 cubes this summer!

Only???

 

[hdskull]

After 2 years cubing, i have 2 LL-SKIP this summer

My little cousin got one in his first competition, here is the video:

http://www.youtube.com/watch?v=Yd7rySV9EwQ

wow ur family is blessed with the LL skip lucky charm, haha, i've had it once in 6months of cubing.

 

[TimMc]

I do CFOP. My LL is: OE OC PC PE

Having said that, in the past week I've had two cases where I've only had to do OE of the LL step to solve it. Would you regard this as a LL skip?

Both times I was on public transport and not timing the solve :-/

 

[AvGalen]

No, not in a competition and not at home either. I don't think I have solved 15552 cubes yet though. My luckiest ever was a 1 look last layer (skipped 3 steps) and that was a 16 second solve.

 

[Jason Baum]

I've never had a LL skip in competition, but I have had 8 LL skips at home, and on two of them they were "pure" skips (I didn't have to AUF to finish the solve). 6 of those LL skips, including the two pure skips, were done with ZBF2L. The odds for a LL skip with ZBF2L are better, but not by much. I think it's 1 in 13xxx.

 

[Todd]

The chances of a PLL or OLL skip seem pretty good yet it never happens for me?? A few weeks ago i had 2 PLL skips in a row and havent had it happen since then.

 

[hdskull]

The chances of a PLL or OLL skip seem pretty good yet it never happens for me?? A few weeks ago i had 2 PLL skips in a row and havent had it happen since then.

ever after since first reading this thread, i've had about 10 PLL skips, like 2 every 2 days or something, with limited amount of playing also(playing with other people's cubes at school, since someone else has mine). but i rarely get skips at home by myself :confused: weird...

I do CFOP. My LL is: OE OC PC PE

Having said that, in the past week I've had two cases where I've only had to do OE of the LL step to solve it. Would you regard this as a LL skip?

Both times I was on public transport and not timing the solve :-/

i think it's a PLL skip.

 

[Sin-H]

I actually just had 1 or 2 LL skips in half a year of Cubing. (I'm not shure about the second, I was just doing it while watching TV, so I don't remember the solve well).

But I get about 1-5 PLL or OLL skips a day

 

[Johannes91]

The odds for a LL skip with ZBF2L are better, but not by much. I think it's 1 in 13xxx.

4! * 4! * 3^3 / 2 = 7776

4/7776 = 1/1944

 

[Jason Baum]

4! * 4! * 3^3 / 2 = 7776

4/7776 = 1/1944

Wow, I didn't realize that it was that much better. I'm pretty sure I read it was 1 in 13xxx somewhere on the Yahoo group, but that never made sense to me and I had always wondered what the actual number was. Thanks for calculating that!