#### Flexico

##### Member
I'm trying to learn the corners-first method to solve my 6x6, and the only tutorial I can find on it is here: https://www.jaapsch.net/puzzles/cube4.htm (About halfway down the page). (I reduce the 6x6 to a 4x4 by aligning the faces and edge pieces first). I can solve the corners easily enough, but when I try to line up the top/bottom edges, almost every time I use one of the algorithms listed, the piece I want to move goes to the right place, but another piece I already solved gets displaced. Doing this many times eventually gets all of the edges solved, but it seems long and inefficient. I wonder if some of the algorithms listed have typos, but I'm not sure. Is there a better tutorial for this method anywhere? Preferably one with illustrations.

#### One Wheel

##### Member
I'm trying to learn the corners-first method to solve my 6x6, and the only tutorial I can find on it is here: https://www.jaapsch.net/puzzles/cube4.htm (About halfway down the page). (I reduce the 6x6 to a 4x4 by aligning the faces and edge pieces first). I can solve the corners easily enough, but when I try to line up the top/bottom edges, almost every time I use one of the algorithms listed, the piece I want to move goes to the right place, but another piece I already solved gets displaced. Doing this many times eventually gets all of the edges solved, but it seems long and inefficient. I wonder if some of the algorithms listed have typos, but I'm not sure. Is there a better tutorial for this method anywhere? Preferably one with illustrations.
No idea where you could find a better tutorial, but I am curious why you want to solve a 6x6 corners first?

#### xyzzy

##### Member
I am curious why you want to solve a 6x6 corners first?
Corners first is very easy to learn, since you don't need silly 15-move parity algs. (Wait, I feel like I've mentioned this before.)

when I try to line up the top/bottom edges, almost every time I use one of the algorithms listed, the piece I want to move goes to the right place, but another piece I already solved gets displaced. Doing this many times eventually gets all of the edges solved, but it seems long and inefficient. I wonder if some of the algorithms listed have typos, but I'm not sure.
It does look like some of the algs there are incorrect, but what exactly do you mean by "I reduce the 6x6 to a 4x4 by aligning the faces and edge pieces first"?

#### Flexico

##### Member
Corners first is very easy to learn, since you don't need silly 15-move parity algs. (Wait, I feel like I've mentioned this before.)
Yeah, pretty much this. Thanks. :3

It does look like some of the algs there are incorrect, but what exactly do you mean by "I reduce the 6x6 to a 4x4 by aligning the faces and edge pieces first"?
Well, the 6x6 has 4 edge pieces per edge, and I line up the matching left 2 and matching right 2 so that it effectively has 2 pieces per edge, like a 4x4, since the algorithms I'm using are designed for a 4x4. And I do the same for the center pieces, so that each center is basically 2x2 instead of 4x4. I'm not sure this is the best way to do it, but it's the best I could figure out.

#### Noa

##### Member
What is the best 7x7 cube on the market?

#### One Wheel

##### Member
What is the best 7x7 cube on the market?
This
Plus
96 of these
Plus
48 of these
And some super glue

Or if you have piles of money to spend, this or the SCS magnetic Cosmic Wuji once they're back in stock.

#### Noa

##### Member
This
Plus
96 of these
Plus
48 of these
And some super glue

Or if you have piles of money to spend, this or the SCS magnetic Cosmic Wuji once they're back in stock.
Ok, thanks

#### Duncan Bannon

##### Member
Is there a way to get around the 5x5 edge parity’s? Thanks! Sarahs cubing site has 12 cases.

#### One Wheel

##### Member
Is there a way to get around the 5x5 edge parity’s? Thanks! Sarahs cubing site has 12 cases.
I believe it has to do with center formation, so the short answer is no, unless you use a cage method, which is generally understood to be sub-optimal for speed solving. What I do is to use my slice-flip-slice back method for l4e until I have a single edge that is either solved (in which case on to 3x3 stage) or unsolved (in which case I do my one 5x5 parity alg on that edge). It's probably worth learning the alg for when you have 2 2-piece blocks paired up as well, but when I average roughly 3:00 on 5x5 I've got bigger worries.

#### xyzzy

##### Member
Is there a way to get around the 5x5 edge parity’s? Thanks! Sarahs cubing site has 12 cases.
Easy mode: always use slice-flip-unslice until you're left with a single problematic edge, then use the "OLL parity" alg.

Intermediate mode: recognise whether you have parity the moment you get to L2E, use your favourite parity alg(s), and optionally predict which non-parity L2E case that leads into.

Hard mode: learn all the parity algs.

Insane mode: trace wing cycles during inspection and see if you have parity, then track the number of quarter turns you make on the inner slices and toggle the parity accordingly; make sure you have even parity when you finish your third centre and this'll guarantee a non-parity L2E case if you don't do something weird with your other centres.

#### Duncan Bannon

##### Member
Ill try the easy mode. What’s flip alg? I get everything but that. Thank you very much!

#### xyzzy

##### Member
Ill try the easy mode. What’s flip alg? I get everything but that. Thank you very much!
It's the same flipping alg you would use with the rest of your edges: R U R' F R' F' R (for E-slice edge pairing) or U' R U R' F R' F' (for M-slice edge pairing).

#### Duncan Bannon

##### Member
Okay, Thank you very very much.

#### Tabe

##### Member
Yeah, if you do edge flip, every case can eventually be reduced down to just the one alg where only a single center edge piece is flipped.

#### Elo13

##### Member
The middle edge piece isn't flipped, the two wings are swapped.

#### Johnny English

##### Member
Merry Christmas everyone. Does anybody knows what is a good book to buy for solving 7x7x7 speed cube please?
Because i have bought speed cube book by Dan Harris, which is good for upto 5x5x5, and also bought Cube yesterday by david singmaster which claims to have solution for 7x7x7 but really, it just contain 1 page on it. Is there any detailed step by step instruction book on solving the 7x7x7 speed cube?

Many Thanks

##### Member
If you can solve a 5x5 you should be able to extend the same techniques to a 7x7. Failing that, look up some tutorials on youtube for reduction and freeslicing (assuming you don' already do that) and apply to 7x7

#### Johnny English

##### Member
Thanks for your advice, i use 3x3 reduction method for 5x5 as instructed in dan harris's book. However, i need a set of algorithm that can direct me from beginning to end. Also, i prefer to read books than watching videos

#### teboecubes

##### Member
What advantage does the actual method of Yau5 have over just doing regular Yau, like you would on a 4x4, but on a 5x5?