Petrus + F2L/OLL/PLL?

[einstein00]

I'm an OK cuber (av. ~35) currently using the layer solution, with F2L and 4-step LL, and I plan to learn full PLL soon. As I was researching other methods, I decided to give Petrus a try. I'm using this guide: http://lar5.com/cube/index.html

From what I understand, step 6 is the same as the second half of 2-step OLL, and steps 5 and 7 can be combined in a single PLL algorithm. Is this correct? Can one essentially "switch" from Petrus to Fridrich at step 5?

Also, I noticed that step 3 seems to be flipping edges, analogous to the first half of 2-step OLL. If there are 2 "bad edges," then one would take about 4 moves to correct this, while an OLL algorithm would take 6. While this seems to be an advantage, I realized that step 4b is greatly restricted - one usually cannot use regular F2L algorithms to solve the last slot. Is it reasonable, or perhaps even advantageous,to skip step 3, continue to step 4a, and then use F2L and OLL algorithms instead of steps 3 and 4b?

If the answer to both questions is "yes," then is it correct to conclude that Petrus and Fridrich differ only in the techniques used to solve 3/4 of the first 2 layers?

 

[Kirjava]

Is it reasonable, or perhaps even advantageous,to skip step 3, continue to step 4a, and then use F2L and OLL algorithms instead of steps 3 and 4b?

Cue 100 posts saying "HEY I HAD AN IDEA LIKE THAT"

 

[Cyrus C.]

Not really.

 

[einstein00]

Cue 100 posts saying "HEY I HAD AN IDEA LIKE THAT"

Hey, I'm sorry I wasn't able to find one of those 100 posts! Top 3 results for searching "Petrus Fridrich" are "The one answer question thread", "Non-Cubers say the darndest things!", "Accomplishment Thread". I've tried to search for these kind of questions, because I'm sure they've been asked before, but there's no way I'm looking through 1078 pages of the "The one answer question thread" to find such a post! Either kindly answer my question, or give me a simple link. There's no need to post garbage like that!

Not really.

Thanks so much for the perfect answer to my question! You not only didn't give an explanation at all, you didn't even specify which of the three questions you're answering!

 

[Cyrus C.]

One of the advantages to Petrus is that you reduce the cube to RU (well, almost) early on. You just took that advantage away. Also, this hybrid has been posted quite a few times, which is why I was so blunt.

 

[einstein00]

Thank you for a more specific answer. However, I must ask, what do you mean by "RU"? I'm guessing that this means you're only turning the R and U sides? But if this an advantage for more fingertricks, then why doesn't regular F2L do this too?

 

[Kirjava]

Hey, I'm sorry I wasn't able to find one of those 100 posts! Top 3 results for searching "Petrus Fridrich" are "The one answer question thread", "Non-Cubers say the darndest things!", "Accomplishment Thread". I've tried to search for these kind of questions, because I'm sure they've been asked before, but there's no way I'm looking through 1078 pages of the "The one answer question thread" to find such a post! Either kindly answer my question, or give me a simple link. There's no need to post garbage like that!

The best thing about this is that you have no idea what I was saying.

 

[einstein00]

The best thing about this is that you have no idea what I was saying.

The best thing about this is that you still haven't contributed anything meaningful to this conversation.

 

[Kirjava]

I wasn't initially mocking you, but I guess that's changed since you're all pissy that I'm not giving out precious info.

OH NOES AM NOT CONTRIBUTING REPORT ME TO THE CYBER POLICE!!!!

You didn't read this; http://www.speedsolving.com/forum/s...equently-Asked-Questions.-READ-BEFORE-POSTING

 

[einstein00]

I sure did read that before I even created this thread - In fact, that's how I initially got to the Petrus guide.

I assume you want me to read this quote:

"I discovered a new method! Is it good?

It's highly likely that the method has been already discussed at length. I advise you to do some research before posting about it and check if it already exists. If you're sure that it's a new and unique idea, post it and get ready to defend it from the people telling you that it's a bad idea"

well, as my second post shows, I have done previous research that netted me nothing. This isn't as easy as searching for a Petrus guide. I'm asking a very specific question about merging and overlapping two different methods. If I'm just horrible at searching, please search it for me and give me a link.

 

[EVH]

You could, it would just guarantee a cross on top every time you finish F2L. Allowing you to learn only 7 oll cases.

 

[Cyrus C.]

You could, it would just guarantee a cross on top every time you finish F2L. Allowing you to learn only 7 oll cases.

What?

 

[Julian]

einstein00, the simple answer is that using petrus for f2l and fridrich for LL is an alternative to fridrich. however, this method is, in general, slower than either pure fridrich or pure petrus. I'd recommend simply using whichever of the two you like more.

 

[Ranzha]

What?

I believe EVH meant to say, "You could use this, but after F2L, the last layer edge orientation is done, leaving you with the seven OCLLs to learn."

 

[Cyrus C.]

I believe EVH meant to say, "You could use this, but after F2L, the last layer edge orientation is done, leaving you with the seven OCLLs to learn."

That wouldn't happen with this hybrid, that would happen with actual Petrus.

 

[EVH]

The post made sense to me

But anyway why wouldn't he? He is simply doing the same thing as the petrus method except not permuting the corners before he orients the corners. Then using PLL to complete the LL.

 

[Cyrus C.]

EVH, read the post again.

EDIT: I guess I shouldn't be that mean, the post didn't make that much sense. He's proposing you skip the Edge Orientation step.

 

[Ranzha]

EVH, read the post again.

EDIT: I guess I shouldn't be that mean, the post didn't make that much sense. He's proposing you skip the Edge Orientation step.

Lol 2x2x2 >> E-layer + EO >> CO >> Domino.
Fail hybrids are fail, amirite?

 

[einstein00]

My point is that while edge orientation saves around 2 turns (4 turn "bad edge" correction versus 6 turn half-OLL), it also makes the last F2L much harder to complete (maybe 12 turns versus 6 turns). If the edge pairing solution was indeed so great, then why don't people do 3/4 cross + 2 F2L + "bad edge" removal + 2 F2L + OLL/PLL?

 

[Kenneth]

Most fast Petrus users do not use the original last layer method, nor do they use OLL-PLL but [wiki]COLL[/wiki] - [wiki]EPLL[/wiki] and they also use [wiki]ZBLL[/wiki] if a case they know is comming up.

The edge orientation makes it possible to use only R and U moves for the last two pairs and corner orientation, it is longer but most people likes it because you do not have to change grips that much then.