Random Blindfold Cubing Discussion

[RyanReese09]

No.

 

[Ickathu]

EDIT: Did I start this RFD trend? Lol.

I was gonna say yes...

 

[RyanReese09]

I was gonna say yes...

A lot of people use RFD. You guys just happen to be talking about it.

 

[Cubenovice]

Solved my first 5X5 in over a year.
Sighted using BLD method just to see what it's like.

It's not as bad as I thought but still I don't think I'll try this blindfolded any time soon...

What would be a good 4BLD time to achieve before i try the 5x5?

 

[Noahaha]

Solved my first 5X5 in over a year.
Sighted using BLD method just to see what it's like.

It's not as bad as I thought but still I don't think I'll try this blindfolded any time soon...

What would be a good 4BLD time to achieve before i try the 5x5?

It's more about multi. A 5BLD is like a 3-cube multi. My first success came right after my first sub-15 4BLD.

It's not as hard as you think though. +center comms are easy, and memo is easier with centers as reference points. Try doing it like a multi with one room for +centers, one room for xcenters and one room for wings. Then do a 3BLD with the central edges and the corners. You may surprise yourself.

 

[Cubenovice]

Yah, I found +centers pretty lol
There are so many possibilities, using either M or r slice for the insertion move.

What messed with my mind a little was the 'new' letters for centers (obviously tried some letter pairs with eyes closed)
In my 3x3x3 lettering scheme the '"groups of four letters" per face are different for edges and corners.
Works fine on 4x4 as the centers are 'linked' to corners so to say.
In a similar fashion: for 5x5 the +centers lettering would follow the edge lettering: so now I have centers on a different face than I'm used to.
No problem for memo, as I relate to the edge position, for solving it took some extra effort to go to the right face.

edit:
Hmm... what should I take as + center buffer??
UL seems nice for using r U2 r' and M' U M insertions

 

[kinch2002]

What would be a good 4BLD time to achieve before i try the 5x5?

I did my first 5bld the day after my first 4bld attempt (I had to learn what the M2 method was in between ). So you don't have to have any time on 4bld to be able to attempt and succeed at 5bld.

Hmm... what should I take as + center buffer??

I naturally used UB without thinking about it at all beforehand. Every +centre has the letter of the xcentre that is just anticlockwise from it. I've never seen any reason why a different system might be better than this.

 

[qqwref]

A 5BLD is like a 3-cube multi.

Well, in terms of raw memo, a 4BLD is 2.33 3BLDs (roughly a 3-cube multi) and a 5BLD is about 3.86 (so let's say a 4-cube multi). Not all that much harder, surprisingly.

An 8x8 has just over 11 3x3's worth of information.

 

[Noahaha]

Well, in terms of raw memo, a 4BLD is 2.33 3BLDs (roughly a 3-cube multi) and a 5BLD is about 3.86 (so let's say a 4-cube multi). Not all that much harder, surprisingly.

An 8x8 has just over 11 3x3's worth of information.

In reality, 4BLD is much less than 2 cubes if you have a good preorientation, and a lucky 5x5 scramble can be closer to 3 than 4, but based on the number of pieces you're right.

 

[qqwref]

No, it's not "much less than 2 cubes", there are 2.33 cubes' worth of random information, which means that unless you have an incredibly lucky position you are going to have at least that much to memorize no matter how you reorient the cube. That is basically the minimum amount of (compressed) information you need to specify the state the cube is in. In fact, due to the way people memorize centers, a typical 4BLD is probably closer to 3 cubes' worth of memo.

 

[Noahaha]

No, it's not "much less than 2 cubes", there are 2.33 cubes' worth of random information, which means that unless you have an incredibly lucky position you are going to have at least that much to memorize no matter how you reorient the cube. That is basically the minimum amount of (compressed) information you need to specify the state the cube is in. In fact, due to the way people memorize centers, a typical 4BLD is probably closer to 3 cubes' worth of memo.

I just scrambled my 4x4 and there were 7 solved centers after preorientation. Using four buffers, I can solve the 17 remaining centers with 13 targets. Add about 8 corner targets and 24 edge targets, and ok you're right.

 

[Cubenovice]

I naturally used UB without thinking about it at all beforehand. Every +centre has the letter of the xcentre that is just anticlockwise from it. I've never seen any reason why a different system might be better than this.

I still consider myself a noob at commutators and do not like cube rotations too much so I like how UL gives me to opportunity to use M moves too, nice for +centers in the d or u layer.

I think I might copy your lettering for + centers

I just scrambled my 4x4 and there were 7 solved centers after preorientation. Using four buffers, I can solve the 17 remaining centers with 13 targets. Add about 8 corner targets and 24 edge targets, and ok you're right.

I did another 5x5x5 and wrote out the memo and found:
xcenters: 18
+centers: 22
wings: 23
edges: 11
corners: 9
total 83 targets

I do not use floating buffers so typically have a few extra cycles to solve...

 

[Noahaha]

I do not use floating buffers so typically have a few extra cycles to solve...

I HIGHLY recommend it. Even if you can only do cycles from your main buffer, just do a U when you want to move on to the next one.

 

[Jaycee]

Yeah, Cubenovice, try what Noah said xD

In the very few attempts I've done at 4BLD, I found floating buffers easy to understand very quickly. Give it some practice!

 

[Julian]

Tips on getting my LPL into Anki quickly?

 

[drewsopchak]

Tips on getting my LPL into Anki quickly?

Definitely use the enter and tab key a lot and drink coffee. Don't use mouse, be persistent.

 

[Julian]

Heh, thanks. Just to clarify, before I waste a lot of time, I enter the letter (AE) into the "front" box, and the image (aeroplane) into the "back" box. Will I be able to test myself backwards and forwards, given either the pair or the image, and having to provide the other?

 

[drewsopchak]

Heh, thanks. Just to clarify, before I waste a lot of time, I enter the letter (AE) into the "front" box, and the image (aeroplane) into the "back" box. Will I be able to test myself backwards and forwards, given either the pair or the image, and having to provide the other?

You have your boxes correct. You don't test backwards or forwards it's just gives you a group each day. You'll understand once you finish. It will give you the letter pair.

 

[aronpm]

Will I be able to test myself backwards and forwards, given either the pair or the image, and having to provide the other?

Settings -> Deck Properties -> select Basic model and click Edit -> select Reverse and click Enable (this will make all future cards in the deck be both forwards and backwards)
go to Deck Browser, select all, Actions -> Generate Cards -> click OK (this makes pre-existing cards both forwards and backwards)

 

[Julian]

Settings -> Deck Properties -> select Basic model and click Edit -> select Reverse and click Enable (this will make all future cards in the deck be both forwards and backwards)
go to Deck Browser, select all, Actions -> Generate Cards -> click OK (this makes pre-existing cards both forwards and backwards)

Thanks Would you recommend it, or should I just stick to giving the image from the pair?