What are the chances of a PLL + OLL skip?

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What are the chances of a PLL + OLL skip?

Post by jOms on Sat Jul 26, 2008 10:58 pm

what are the chances ng PLL + OLL skip?

Ako kasi.. pinaka swerte ko.. eh right after F2L nag sune lang ako.. tapos buo na.

Kayo?

Para sa mga mathematicians jan.. ilan ratio or chance ng mangyari ang OLL + PLL skip.. kasi there are only 9 tiles nalang.. mejo malaki pa rin un diba??

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Re: What are the chances of a PLL + OLL skip?

Post by S a s o r i on Mon Jul 28, 2008 1:31 am

there are 58 cases of OLL including the solved one...
chances of getting an oll skip = 1/58 = 1.72%

while there are 22 cases of PLL including the solved one...
chances of getting an PLL skip = 1/22 = 4.54%

there are 1210 cases in combining different OLL and PLL cases...
example:
sune + Gperm1
sune + Aperm
Tank + U perm
etc.. (Count that lol)

Chances of getting an OLL + PLL skip??
1/1210 = 0.08264%

know you know why PLL skip occurs more frequent than OLL skip Razz

but I already experienced an OLL + PLL skip...
but not timed xD

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Re: What are the chances of a PLL + OLL skip?

Post by omarismyname on Mon Jul 28, 2008 3:28 am

each and every OLL and PLL case have different probability
of occurrence. thats why its not simply 1/58 and 1/22, respectively. and the probability of skipping the LL should be equal to OLL-skip probability multiplied by PLL-skip probability

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Re: What are the chances of a PLL + OLL skip?

Post by pangungusap on Mon Jul 28, 2008 8:38 am

i agree that its not simply 1/22 or 1/58 (check dan harris site... meron dun probability of occurrence for each PLL and OLL case, and they don't have the same probability)... ala ba tayong resident math expert??

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Re: What are the chances of a PLL + OLL skip?

Post by S a s o r i on Mon Jul 28, 2008 1:37 pm

wag kayong mainis...
I just finished my statistics subject w/ my terror professor..
luckily i got 1.5

I just solved it as much as i know in solving probabilities..

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Re: What are the chances of a PLL + OLL skip?

Post by omarismyname on Mon Jul 28, 2008 1:56 pm

peace bro, im just trying to help

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Re: What are the chances of a PLL + OLL skip?

Post by banjorayos on Mon Jul 28, 2008 3:17 pm

isa lng paraan kung gusto mo mag OLL or mag PLL skip

orient mo mga edges at corner sa last layer ^_^
parang sa LBL then saka ka ag OLL or PLL
50% chance mo mag skip,kazo mga5-10 seconds ang pag orient ^_^

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Re: What are the chances of a PLL + OLL skip?

Post by wawaivory3415 on Mon Jul 28, 2008 7:40 pm

C JB naka 8 seconds last Saturday--New PB na niya siguro yun pero hinde siya ang nakagamit ng Stackmat

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Re: What are the chances of a PLL + OLL skip?

Post by omarismyname on Mon Aug 04, 2008 9:41 pm

i got curious and so i computed the probability of occurrence of an OLL skip, PLL skip and LL skip. i used data from jessica fridrich's website for my computation (probability of occurrence for each OLL and PLL case)

OLL skip- 1/216 or 1:216 or 0.46%(same ratio as the OLL case where all corners are oriented and no edge are oriented)

PLL skip- 1/72 or 1:72 or 1.39%(same ratio as H perm and any of the two N perms)

LL skip- 1/216 x 1/72 = 1/15552 or 1:15552 or 0.00643%

so... have you done 15552 solves already? tongue

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Re: What are the chances of a PLL + OLL skip?

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