Big Cube BLD Discussion

[drewsopchak]

You can also adapt M2 for T-centres.

Center pieces are the best part of big bld. So many comm/solving options.

 

[bobthegiraffemonkey]

Center pieces are the best part of big bld. So many comm/solving options.

Agreed . Now I just need more time to practice it, my best 5BLD so far was off by 3 centres so not even a success.

 

[sukesh12]

Mixing memory method feels great. I use letters for centers, visual for edges and letters again for corners.

 

[kinch2002]

Mixing memory method feels great. I use letters for centers, visual for edges and letters again for corners.

Now mix up your memo methods within each set of pieces, and it might just be awesome.

 

[Cubenovice]

Now mix up your memo methods within each set of pieces, and it might just be awesome.

Hi Daniel,

could you give asome more insight on your mixing of memo?

Do you mix randomly like for instance start a sentence, some visual pieces, continue sentence or do you mix very specific: first few pieces visually, then rest of the set of pieces with sentences/ story?

I do the latter for 3 BLD corners, hoping to build up to full visual corners.

 

[DrKorbin]

Mixing memory method feels great. I use letters for centers, visual for edges and letters again for corners.

What is your average time of memo and for execution?

 

[kinch2002]

Hi Daniel,

could you give asome more insight on your mixing of memo?

Do you mix randomly like for instance start a sentence, some visual pieces, continue sentence or do you mix very specific: first few pieces visually, then rest of the set of pieces with sentences/ story?

I do the latter for 3 BLD corners, hoping to build up to full visual corners.

I don't have a specific method of memo mixing.
Edges - I always memo these in sets of 4. By default they are memoed with letters made into a short phrase covering the 4 letters. However, if I think the first 2 pieces are really easy visually (e.g. adjacent) or if I spend too long thinking of a phrase, then I'll do the 4 letters visually.
Centres - These are memoed as a 3 (including buffer) then in 2s. New cycles (and therefore new buffer) start with another 3 letters. I memo with a complete mix of letters and visual. I guess I just do visual if it's an easy one and letters otherwise. Occasionally I'll chuck a few numbers in there, because I still know my numbering system that I used the first time I solved (it follows the same order as the letters).
Corners - always just audioloop made from mashing together all the letters (rather than one-syllable sounds). I have to audioloop rather than any visual at all because I can't actually solve a load of 9+ movers by simply knowing the visual cycles - I learnt them straight from letter pair to alg.

 

[Gabig]

Hi guys,
I just get bored with 3x3 and wanna solve 4x4 I learn methods (r2/U2) but still don't have really good idea for memorization.
Edges and corners are not a problem, probably I will use memo from 3x3, but I don't how to do with centers.
I thought about letter pairs, I heard it's the best. What do you think? If you are using it how do you place letters on cube? By layers? Or by faces? For example ABCD on top, EFGH on left, etc...

 

[Julian]

Hi guys,
I just get bored with 3x3 and wanna solve 4x4 I learn methods (r2/U2) but still don't have really good idea for memorization.
Edges and corners are not a problem, probably I will use memo from 3x3, but I don't how to do with centers.
I thought about letter pairs, I heard it's the best. What do you think? If you are using it how do you place letters on cube? By layers? Or by faces? For example ABCD on top, EFGH on left, etc...

In case you weren't aware, there's double the memo required for edges, so won't be able to simply use your 3BLD method. Letter pairs do work very well. It really doesn't matter at all how you place the letters on the cube. Just organize them in a way that makes sense to you, you'll get used to it over time.

 

[Gabig]

In case you weren't aware, there's double the memo required for edges, so won't be able to simply use your 3BLD method.

Well, why not? I would use 24 letters (23 without buffor)
In 3x3 I use letter for every sticker not every edge so the number is almost the same.

 

[Mikel]

Well, why not? I would use 24 letters (23 without buffor)
In 3x3 I use letter for every sticker not every edge so the number is almost the same.

But there are still twice as many edge pieces on the 4x4 than the 3x3, so you will have to memorize and solve twice as many.

 

[Gabig]

But there are still twice as many edge pieces on the 4x4 than the 3x3, so you will have to memorize and solve twice as many.

yeah, i know, but method would be good
today I tried method Person>action>object with letter pairs, it's quite good, finally I had 3 short stories (person>action>object) and remember without problem, now it's time to add edges and corners

 

[Cube-Fu]

Personal shout out to Matt; congratz on the 5bld smash, who'd of thought a girraffe monkey could've used his hooves like that?

 

[Cubenovice]

4x4x4 5x5x5 Blindfold paritywith examples

When I was looking for info on solving big cubes blindfolded I found that you have to browse trough lots of threads to find good ways of dealing with parities.
Zane once started a thread for novice blindfolders but also that thread doesn't pop right up when searching for something like 4x4x4 blindfold parity.
I would like to start another thread specifically for big cube parities that is easy to find via the search function.

I was thinking of a thread title like "4x4x4 5x5x5 blindfold parity" so it is the first thing that pops up when using the search function.
In the thread we could collect parity info, links to existing usefull threads and example solves.

What do you guys think? Could this be usefull or shouldn't we make it too easy

Here's already a 5x5x5 example solve with parity I prepared earlier today.

This is scramble 1 from this weeks BLD race 2012-30
Bw2 R Uw U2 F2 L R2 D' F L2 Dw2 U' B' L' Bw Dw' Lw' U2 R2 B Fw' D' Uw2 L D2 Uw L2 U R' B2 L Bw2 Dw2 R2 D Bw' Fw Lw2 Fw2 F2 Dw' R' Fw L B' Fw' D Uw Lw2 B F' Uw2 Lw2 B Lw' Rw' F' L U B'

Full solve written out under spoiler tag, letters after // are my letter-pairs but I would replace these by actual targets.
And add some background info on the parity fixes.

Spoiler

z2 // orient
// x-centers commutators
R' l u l' U' l u' l' U R // DF
D2 r' u2 r' U2 r u2 r' U2 r r D2 // KV
B r U r' u2 r U' r' u2 B' // IE
b' u b U2 b' u' b U2 // GC
D r r U2 r' d2 r U2 r' d2 r' D' // SN
L2 r U2 r' d r U2 r' d' L2 // TB
f' d2 f U' f' d2 f U // QJ
D' r' r' U r d r' U' r d' r D // PU
L r' U r d' r' U' r d L' // RW
R' f' U2 f d f' U2 f d' R // HX
D2 r' d' r' U r d r' U' r r D2 // OM
r d2 r' U r d2 r' U' // XD
// + centers commutators
M' u' M'U M u M' U' M M // BV
S u' S' U' S u S' U // AK
Rw b U b' E b U' b' E' Rw' //HS
S' u' S U2 S' u S U2 // ED
E' b U b' E b U' b' // CF
L M d M' U' M d' M' U L' // LG
L' E r U2 r' E' r U2 r' L // WI
d' M' U' M d M' U M // QT
b' b' U b E b' U' b E' b //PR
E r' U2 r E2 r' U2 r E // UO
D2 r' r' U2 r E' r' U2 r E r D2 // MO
// Wings r2
L2 B L2 B' r2 B L2 B' L2 // U
B' R B r2 B' R' B // B
r2 // G
F d R U R' d' R U' R' F' r2 // P
U' L U r2 U' L' U // V
B' R B U R2 U' r2 U R2 U' B' R' B // H
B L2 B' r2 B L2 B' // T
U R' U' r2 U R U' // W
l2 B' R B U R2 U' r2 U R2 U' B' R' B l2 // L
U' L' U r2 U' L U // S
B' R2 B r2 B' R2 B // Q
R2 U R2 U' r2 U R2 U' R2 // A
r2 // G
U R U' r2 U R' U' // R break into new cycle
R2 B' R2 B r2 B' R2 B R2 // X
L2 U' L2 U r2 U' L2 U L2 // E
U' L2 U r2 U' L2 U // M
l B' R B U R2 U' r2 U R2 U' B' R' B l' // O
l' B' R B U R2 U' r2 U R2 U' B' R' B l // C
r2 F R U R' d R U' R' d'F' // D
B' R' B r2 B'R B // J
U R U' r2 U R' U' // R
B L' B' r2 B L B' // F break into new cycle
U R2 U' r2 U R2 U' // I
B L B' r2 B L' B' // N
B L' B' r2 B L B' // F
// Midges M2
U' L2 U M2 U' L2 U // M
U R U' M2 U R' U' // R
L2 B L2 B' M2 B L2 B' L2 // U
M2 // G
B' R B M2 B' R' B // B break into new cycle
U' L' U M2 U' L U // S
U R' U' M2 U R U' // W
B' R B M2 B' R' B // B
B L' B' M2 B L B' // F break into new cycle
D M' U R2 U' M U R2 U' D' M2 // P
B L' B' M2 B L B' // F
U' F2 U M2 U' F2 U // parity
M' M' U' M' U' M' U2 M U' M U' M U2 M // flip D
// Corners Old Pochmann
D' R U' R' U' R U R' F' R U R' U' R' F R D // R
D R2 U' R' U' R U R' F' R U R' U' R' F D' // T
D F' R U' R' U' R U R' F' R U R' U' R' F R F D' // M
R' F R U' R' U' R U R' F' R U R' U' R' F R F' R // E
F R' R U' R' U' R U R' F' R U R' U' R' F R R F' // J
F' R U' R' U' R U R' F' R U R' U' R' F R F // V
F R U' R' U' R U R' F' R U R' U' R' F R F' // G
// parity fix
y2 R U R' U' Rw2 F2 U2 r2 U2 F2 Rw2 U R U' R'

View at alg.garron.us

 

[Zane_C]

Interesting proposal, I think this will be very helpful.

What do you guys think? Could this be usefull or shouldn't we make it too easy

Haha, good point.

If people come across this thread via the search function, that means they're looking for help with big cube BLD parity. I imagine if they can't find anything through the search function, they'll be quite eager to ask in the one answer BLD question thread (or perhaps in an entirely new thread). If this proposed thread is created, the number of questions posted concerning big cube BLD parity will be reduced. This means that the cubers who would've answered these repeatedly asked questions can put that time into helping others.

So even though this thread might make it seem "too easy" for the novice cubers, it should also make it easier on the more experienced cubers.

 

[CHJ]

Of all the times i've tried the 4BLD, i have only ever come across a near solve once, 2 corners were misaligned. Its not that i don't know how but recognising it, as for my good attempt it had both parities so i have an idea of whats going on. i have problems looking for edges, it take 20 minutes to memo and i hate it, execution is fine. Centers i have a mix of pains, the intuitive side of things usually make me swap two pieces at the end or something and end up counting 23 pieces in position, anything to help my edge recognition and centre placement?

Btw i do centres first, then edges finishing with corners, same as memo, corner audioloops don't work on me.

 

[AbstractAlg]

As far as I figured out, you get used to edge placement. If every edge has it's letter, you'll just get used to which edge (left or right) is about when you recognize the first color of edge.
If you use r2 you can track setup moves to see which piece would go to buffer for that current edge in buffer.

For centers, get used to corner commutators, then centers will be quite easy yet you need strong visual representation of the current cycle (or just tap pieces to visualize where they are) and practice. My first center solving took 13mins, next attempt took 4mins, so it's about practice.

Hope this helps a bit.

Also, fast 4bld and 5bld guys, do you count pieces or just ahve big faith that you covered all the pieces/cycles?

 

[DrKorbin]

Also, fast 4bld and 5bld guys, do you count pieces or just ahve big faith that you covered all the pieces/cycles?

I do count number of pieces and cycles, though sometimes I miscalculate. But sometimes it helps me to find out there is a 2-cycle somewhere, especially when the number of cycles is huge.

 

[Zane_C]

Also, fast 4bld and 5bld guys, do you count pieces or just ahve big faith that you covered all the pieces/cycles?

I don't count the pieces individually, but I do keep track of how many locations I've used. Because I know that for either +centers, xcenters or wings I should go through ~6 locations on average (24 targets).

So if I finish 2 letters into my 6th location, then I know that's 22 pieces cycled.
Likewise, if I finish 3 letters into my 5th location, then I've cycled 19 pieces - (If this happened, there would either be several pieces solved, or some unsolved pieces still in need of cycling).

 

[AbstractAlg]

How do you solve + centers on 5x5, in which order?
Do you take the "top" +center and then go clockwise or how?

Also, wings parity is fixed exact same as on 4x4 when doing r2, but is there some nicer way to fix M2 parity for middle edges on 5x5?
I fix it last with D' L2 D M2 D' L2 D then solve corners and that two middle edges with some PLL but that leaves me with permuted wings so I do also 5x5 permutation parity fix. Is there some nicer alg or something?