Petrus questions for petrusers

[cmhardw]

I used to practice block building by solving for fewest moves a LOT.

[really off topic]

Lars I just felt like mentioning this, and this seemed like a good place to do so, about my favorite quote of yours.

At the 2003 World Championships when the press was still very much "Roooobix cubes?! *waves hands near head in amazement* They still exist? I used to peel the stickers off, get it? *nudge* Get it?"

Anyway a reporter was interviewing Lars, and had NOOOooooo idea who he was talking to. This reporter was asking lots of people what their method was, and when asked this question Lars responded:

"Well, I mostly use the Petrus method, but I have a bit of my own stuff mixed in there too."

I almost feel bad for whoever the reporter was, but needless to say every speedcuber within earshot was dying trying not to bust out laughing

[/really off topic]

Chris

 

[Edmund]

"Well, I mostly use the Petrus method, but I have a bit of my own stuff mixed in there too."

That is great!

I saw something like that where Fall Out Boy was interviewed. The person interviewing told them she was a huge fan, had all their cds and posters, then the bassist (Pete Wentz, who had just gotten married, was on the cover of people) says his name is Mike. The person totally thinks his name is Mike. She looked so dumb.

Sorry about the excessive off-topicness.

 

[nigtv]

Anyway a reporter was interviewing Lars, and had NOOOooooo idea who he was talking to. This reporter was asking lots of people what their method was, and when asked this question Lars responded:

"Well, I mostly use the Petrus method, but I have a bit of my own stuff mixed in there too.

Fridrich has a similar story on her page as well I think.

I'm not sure if this is going to be an issue for you, but it was for me so I'll say it. I used to have a very hard time finishing the first two layers (expanding to 2x3x3 or whatever it's called) at first, mainly had a hard time being able to do it fast, but also not being able to do in under 30 turns (yea, I know, 30?!) or 15 seconds. Back then, I just practiced only that for about a week, and was able to get down to about 12 turns, or 8 seconds. Helped me because once I was able to really SEE What was going to need to happen over there, I could help myself make it easier, because for me, making small blocks during the 2x2x2 or 2x2x3 and not breaking them is easier than ignoring it until I get there. Same thing with edge orientation, although that isnt anything thats not mentioned on the site...

Out of the 4-7 methods I've learned, petrus is probably #2 (under heise) as far as how much blurring steps together helps the solve. This is probably all pretty basic, just my experience, helped me a lot to think of the processes less as 'steps' and rather as consecutive 'goals', meaning as long as I did them more or less in order (and even that was flexible), instead of 'get there, done, now do this, done, ' etc., I was able to shave A TON of turns, as well as some time.

For what it's worth...

 

[rubiknewbie]

You make me want to learn Petrus method. I turn slow so less moves helps. 12 move for F2L? That's insane.

 

[Overtime]

I've been just wanting to know how to make petrus works, I fix all the edges then the entire thing gets kinda blurry for me after that point.

 

[Edward]

I've been just wanting to know how to make petrus works, I fix all the edges then the entire thing gets kinda blurry for me after that point.

Fridrich f2l using only 2gen with no cube rotations. Either L U faces or R U faces.

 

[nigtv]

I've been just wanting to know how to make petrus works, I fix all the edges then the entire thing gets kinda blurry for me after that point.

Assuming that you have gotten up to the 2x2x3 (which you should, if you are fixing edges as a step, instead of during the 2x2x3), and you've fixed the edges, you're going to pick a color that you want as your last face (2 options there), and ignore all pieces that have that color on them.

If you're having trouble actually finishing the F2L, instead of being confused about what exactly you're solving, I'd suggest finding any edge (without the LL color, 3 choices) and pair it with a corner (using only 2 sides, like edward said), then match that pair up with its adjacent edge (the edge that shares 2 colors with the corner in your pair, and one color with the edge in your pair) and match those up to make a 2x2x1 block. Practice that, and start seeing if you can slide that other pair in (at least that's how I learned it, making up tricks and getting gradually better)

sorry if that was a lot of words and 0 help

edit: I'm not sure why, but petrus seems relentlessly daunting when I first started learning it. It's no where close to how complicated I thought it was

 

[rubiknewbie]

I am probably not qualified to comment, but as a layman I am wondering if multislotting and simultaneous insertions into 2 slots is more relevant for Petrus since everytime you narrow down to 2 adjacent slots?

 

[nigtv]

I am probably not qualified to comment

Never let that stop me before.

Oh, and I have no brain to think with right now, so no clue on the rest of that post.

 

[Overtime]

Fridrich f2l using only 2gen with no cube rotations. Either L U faces or R U faces.

Assuming that you have gotten up to the 2x2x3 (which you should, if you are fixing edges as a step, instead of during the 2x2x3), and you've fixed the edges, you're going to pick a color that you want as your last face (2 options there), and ignore all pieces that have that color on them.

If you're having trouble actually finishing the F2L, instead of being confused about what exactly you're solving, I'd suggest finding any edge (without the LL color, 3 choices) and pair it with a corner (using only 2 sides, like edward said), then match that pair up with its adjacent edge (the edge that shares 2 colors with the corner in your pair, and one color with the edge in your pair) and match those up to make a 2x2x1 block. Practice that, and start seeing if you can slide that other pair in (at least that's how I learned it, making up tricks and getting gradually better)

sorry if that was a lot of words and 0 help

edit: I'm not sure why, but petrus seems relentlessly daunting when I first started learning it. It's no where close to how complicated I thought it was

I've gotten the 2gen f2l thing kinda worked out now. Probably just have to practice it now. is the Last layer also done 2gen?

 

[JLarsen]

Fridrich f2l using only 2gen with no cube rotations. Either L U faces or R U faces.

Assuming that you have gotten up to the 2x2x3 (which you should, if you are fixing edges as a step, instead of during the 2x2x3), and you've fixed the edges, you're going to pick a color that you want as your last face (2 options there), and ignore all pieces that have that color on them.

If you're having trouble actually finishing the F2L, instead of being confused about what exactly you're solving, I'd suggest finding any edge (without the LL color, 3 choices) and pair it with a corner (using only 2 sides, like edward said), then match that pair up with its adjacent edge (the edge that shares 2 colors with the corner in your pair, and one color with the edge in your pair) and match those up to make a 2x2x1 block. Practice that, and start seeing if you can slide that other pair in (at least that's how I learned it, making up tricks and getting gradually better)

sorry if that was a lot of words and 0 help

edit: I'm not sure why, but petrus seems relentlessly daunting when I first started learning it. It's no where close to how complicated I thought it was

I've gotten the 2gen f2l thing kinda worked out now. Probably just have to practice it now. is the Last layer also done 2gen?

No.

You make me want to learn Petrus method. I turn slow so less moves helps. 12 move for F2L? That's insane.

That's more like a really really really nice 2x2x3 move count average. I believe that's what he might be referring to. Even then I assume he doesn't make 12 move 2x2x3 blocks in one go during a speedsolve with 15 second inspection. Perhaps FMC though.

 

[rubiknewbie]

You know what 2x2x2 block takes me forever :fp. Time to watch some vids.