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 Post subject: Best way to finish a Professor Cube
PostPosted: Wed Mar 07, 2007 4:39 pm 
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Joined: Sat Apr 01, 2006 8:55 pm
Location: Dallas, TX
Hi All!

I have looked at Big Cubes and am trying to use their method. My method takes a bit longer. So I wanted to find a simplier way to solve a 5x5x5.

I have the three middle layers solved and the top and bottom center 9 pieces.

From this point what is the best point to get the remaining top and bottom edges and 8 corners solved.

I want to be able to get it to a point to be solved like a 3x3x3.

Any pointers on this?

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 Post subject:
PostPosted: Wed Mar 07, 2007 4:59 pm 
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Yes, I solve centers first (making the 3x3 grid) then pair up all the edges - then it's like a 3x3x3 from there.

I've been actually trying to learn Frank Morris' method. I haven't quite got how he does all the edges yet (I've been using another method). I believe it's similar though, but he has a way of pinpointing the correct pieces alot quicker.

But just using how he does the centers, already knocked off 2-3 minutes to my time. So i'm down to less than 5-8 minutes from originally 20 minutes.

LOL yes i know those times are slow - but then again, i'm not a speedcuber and 2-3 minutes are just solving the cube from it's 3x3x3 part.

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 Post subject:
PostPosted: Wed Mar 07, 2007 5:31 pm 
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yes however I'm having trouble pairing up the top and bottom edges. what do you suggest?

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 Post subject:
PostPosted: Wed Mar 07, 2007 5:41 pm 
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what do you mean?

i solve ALL edges the same way...

dang, i can't find the site i used - it had lots of pics to go with the alg's so you can set them up pretty easily.

but check this site out. this is what i want to learn to get better/faster.

http://www.bigcubes.com/

click the prof's cube. it'll show you how to pair up the edges, or Tredges ;)

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 Post subject:
PostPosted: Wed Mar 07, 2007 5:54 pm 
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yes that is the one I've been using, However I am stuck on pairing up the top and bottom edges.

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 Post subject:
PostPosted: Wed Mar 07, 2007 6:03 pm 
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oooo yes!

found it... haha good old Jaap's page had the link! :D

http://www.geocities.com/alchemistmatt/ ... 5cube.html

go to step 6. pairing up the edges. ok, it'll be slower than Frank's method. but it's the method i've been using since day one.

it's funny Adam Z. gave me a similar alg for pairing up the edges for the Rylox Prism. Which in turn can be used for the 4x4x5 :D (sorry I had to add that, as i finally solved it).

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 Post subject:
PostPosted: Wed Mar 07, 2007 6:04 pm 
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S.Rubiks wrote:
yes that is the one I've been using, However I am stuck on pairing up the top and bottom edges.


There are some algs on bigcubes to help with that part.

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 Post subject:
PostPosted: Wed Mar 07, 2007 6:40 pm 
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You should be able to use the bigcubes method to build the last tredges without disturbing the middle layers.

I'm not sure how you solve the middle layers, and maybe it's worth it, but if your end goal is to solve it like a 3x3, it seems to me that you might as well just use the bigcubes method straight out - solve all the centers, build all the tredges, and then solve like a 3x3. The way you're doing it will also work, but, unless you have a very unusual 3x3 solve, whatever effort goes into solving the four "side" tredges (on the E slice in the reduced 3x3) to their correct positions is going to be wasted when it's time to solve the reduced 3x3 and you break them up again.


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 Post subject:
PostPosted: Thu Mar 08, 2007 1:07 pm 
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ok....

yes you can do that, and pairing them up one piece at a time across the e ring using moves like R'r' F R' F' Rr (if center tredge is at fd and it wing to match is at UrF ) and such should get you down to the last 2 edges, unless you plan ahead then you can finish them all, but i'm not sure how easy it is to keep that m ring intact for the last 2 edges if you have to solve them separately.

but yeah i don't think its worth it, i'm not one to stiffle new ideas and processes, but anything that ends up restricting moves is usually bad because it takes more moves than necessary to get the rest of stuff done, and especially on the professor move count is a big deal, even 1 wasted move per 'tredge' piece can equate to 24 wasted moves over a solve, doesn't sound like much, but it adds up quick.

hope i answered ur ?

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 Post subject:
PostPosted: Thu Mar 08, 2007 2:22 pm 
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reeeech wrote:
oooo yes!

found it... haha good old Jaap's page had the link! :D

http://www.geocities.com/alchemistmatt/ ... 5cube.html

go to step 6. pairing up the edges. ok, it'll be slower than Frank's method. but it's the method i've been using since day one.

it's funny Adam Z. gave me a similar alg for pairing up the edges for the Rylox Prism. Which in turn can be used for the 4x4x5 :D (sorry I had to add that, as i finally solved it).



Now I have a question that doesn't apply to Final Fantasy 12 for you. Ah ha!

How do you solve the second and fourth layer centers? I've been simulating this cuboid on my computer and my 5x5 and I can solve everything but the 'corner centers' on those 4 faces.

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 Post subject:
PostPosted: Thu Mar 08, 2007 2:51 pm 
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lol...

erm, you solve the 2nd and 4th layer centers like you solve the 1st and 5th layer edges...

haha Adam said that to me and I had a confused look on my face.

but tis true.

top front centers - bottom back centers - and right bottom centers.

then do an edge pair alg and you'll get it.

r2 u'2 R2 u2 r2

(repeat using U instead of u and you can do the 1st and 5th layer edges)
----
i've been getting used to the 4x4x5 - it's getting a lot easier now :D

solve the centers, solve 2nd and 4th layers like domino, then solve the rest like a 3x3x5. sometimes you'll run into a few parities - but look at my sig for those alg's ;)

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 Post subject:
PostPosted: Thu Mar 08, 2007 10:33 pm 
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YES! you solved the 4x4x5. its not hard to solve a 5x5x5 the way you are doing it is harder then pairing the edges, but it all works.


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 Post subject:
PostPosted: Fri Mar 09, 2007 2:24 pm 
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Joined: Sun Jun 04, 2006 10:05 am
Location: Minneapolis, Minnesota, USA
Holy crap, how could I not see that? Hahaha.

Thank you though.


I probably had the same expression on my face when I read the first sentence, but as you explained it, it made perfect sense.

Thank you again.

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Fridrich
3x3 PB 22.63
3x3 Av 30.57

25, Male
Started cubing Oct 15 '05

Out of the game, but not completely.


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