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[Help Thread] Big Cube Discussion (5x5 / 6x6 / 7x7 / etc)

RCastle

Member
Joined
Aug 20, 2020
Messages
12
Yes, this can happen unless you are careful to make sure that there is an unsolved tredge on the upper layer facing you before you insert the next tredge. If you position the last unsolved tredge of the upper layer so it is facing you and use R U' R to insert the 4th tredge, it won't displace any that you've already put up there.


Thank you finally a piece of information i can use! I tried it and it worked perfectly, thank you for the help, now its just solving the last 4 tredges i need to learn to do. thanks again for the great info!!!
 

vidcapper

Member
Joined
May 22, 2020
Messages
81
I'm soon getting an 8x8 & 9x9 but I can't find the parity algs online anywhere, so I had a go at working them out myself. Please let me know if they are correct and/or I have missed some, as doing them wrong can make a right mess of the cube! :)

C=corner

8x8EdgeCooxxooC3RwU2x3RwU23RwU23Rw'U23LwU25Rw'U23RwU23Rw'U23Rw'
8x8Edge 2CoxxxxoC2RwU2x2RwU22RwU22Rw'U22LwU26Rw'U22RwU22Rw'U22Rw'
8x8OLL4RwU2x4RwU24RwU24Rw'U24LwU24Rw'U24RwU24Rw'U24Rw'
8x8PLL4Rw2F2U24Rw2'U2F24Rw2
9x9EdgeCoooxoooC4RwU2x4RwU24RwU24Rw'U24LwU25Rw'U24RwU24Rw'U24Rw'
9x9Edge 2CooxxxooC3RwU2x3RwU23RwU23Rw'U23LwU26Rw'U23RwU23Rw'U23Rw'
9x9Edge 3CoxxxxxoC2RwU2x2RwU22RwU22Rw'U22LwU27Rw'U22RwU22Rw'U22Rw'
 

xyzzy

Member
Joined
Dec 24, 2015
Messages
2,012
I'm soon getting an 8x8 & 9x9 but I can't find the parity algs online anywhere, so I had a go at working them out myself. Please let me know if they are correct and/or I have missed some, as doing them wrong can make a right mess of the cube! :)
Stop thinking about it in terms of "I need to turn exactly this many layers at this point in the alg" and think about it as if you were gluing layers together to make a 5×5×5 with oddly-sized layers. The algs are all the same. (Also, I guess some people might not notice this, but the 3Rw' move in the usual Lucas parity alg for 5×5×5 can be thought of as Lw' combined with an x' rotation, so all the "actual" moves are of double-layers and there's no "truly" triple-layer move in the alg. This might make it easier to translate the alg to different cube sizes.)

If you really want to be sure though, try copying your algs into alg.cubing.net. It supports cube sizes all the way up to 17.
 

RCastle

Member
Joined
Aug 20, 2020
Messages
12
Can someone please point me to web page with the algorithms and cases (in pictures where they are used to solve the last 4 layers of the 5x5? The first 8 are on the top and the bottom of the cube i just need to fix the last 4 to solve it like a 3x3.
 

Spacey10

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Joined
May 11, 2020
Messages
600
Location
Virginia
YouTube
Visit Channel
Can someone please point me to web page with the algorithms and cases (in pictures where they are used to solve the last 4 layers of the 5x5? The first 8 are on the top and the bottom of the cube i just need to fix the last 4 to solve it like a 3x3.
You only need one algorithm, it's a setup to slice flip slice
And, why can't you just show us a picture?
 

zslane

Member
Joined
Jul 8, 2020
Messages
147
Feliks shows how to do this in his video tutorials. I'm not sure what his aversion to Feliks' tutorials is.
 

vidcapper

Member
Joined
May 22, 2020
Messages
81
I'm soon getting an 8x8 & 9x9 but I can't find the parity algs online anywhere, so I had a go at working them out myself. Please let me know if they are correct and/or I have missed some, as doing them wrong can make a right mess of the cube! :)

C=corner

8x8EdgeCooxxooC3RwU2x3RwU23RwU23Rw'U23LwU25Rw'U23RwU23Rw'U23Rw'
8x8Edge 2CoxxxxoC2RwU2x2RwU22RwU22Rw'U22LwU26Rw'U22RwU22Rw'U22Rw'
8x8OLL4RwU2x4RwU24RwU24Rw'U24LwU24Rw'U24RwU24Rw'U24Rw'
8x8PLL4Rw2F2U24Rw2'U2F24Rw2
9x9EdgeCoooxoooC4RwU2x4RwU24RwU24Rw'U24LwU25Rw'U24RwU24Rw'U24Rw'
9x9Edge 2CooxxxooC3RwU2x3RwU23RwU23Rw'U23LwU26Rw'U23RwU23Rw'U23Rw'
9x9Edge 3CoxxxxxoC2RwU2x2RwU22RwU22Rw'U22LwU27Rw'U22RwU22Rw'U22Rw'
Following up, I used Excel to calculate all combinations of edge parity up to 11x11...

1015x5
10016x6
100017x7
110117x7
101017x7
1000018x8
1100118x8
1011018x8
10000019x9
11000119x9
11101119x9
10010019x9
10111019x9
11010119x9
10101019x9
1000000110x10
1100001110x10
1110011110x10
1001100110x10
1011110110x10
1101101110x10
1010010110x10
10000000111x11
11000001111x11
11100011111x11
11101011111x11
11110111111x11
10001000111x11
10011100111x11
10100010111x11
10111110111x11
11001001111x11
10010100111x11
10110110111x11
11010101111x11
11011101111x11
10101010111x11

I'd hate to get the last one on the 11x11! :)
 

One Wheel

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Joined
Feb 24, 2016
Messages
2,674
Location
Wisconsin
WCA
2016BAIR04
Following up, I used Excel to calculate all combinations of edge parity up to 11x11...

1015x5
10016x6
100017x7
110117x7
101017x7
1000018x8
1100118x8
1011018x8
10000019x9
11000119x9
11101119x9
10010019x9
10111019x9
11010119x9
10101019x9
1000000110x10
1100001110x10
1110011110x10
1001100110x10
1011110110x10
1101101110x10
1010010110x10
10000000111x11
11000001111x11
11100011111x11
11101011111x11
11110111111x11
10001000111x11
10011100111x11
10100010111x11
10111110111x11
11001001111x11
10010100111x11
10110110111x11
11010101111x11
11011101111x11
10101010111x11

I'd hate to get the last one on the 11x11! :)
I would count parities on even cubes a little differently. On 6x6, if 0000 is solved, and 1111 is OLL parity, 1001 and 0110 are different cases.
 

vidcapper

Member
Joined
May 22, 2020
Messages
81
I would count parities on even cubes a little differently. On 6x6, if 0000 is solved, and 1111 is OLL parity, 1001 and 0110 are different cases.
Good point - and that would apply to 8x8 & 10x10, but i was only trying to list edge parities.

I would have gone even further than 11*11, but excel decimal to binary craps out at 512... :)

I've now found a workaround for the Excel dec2bin 512 limit...
 
Last edited:

vidcapper

Member
Joined
May 22, 2020
Messages
81
Good point - and that would apply to 8x8 & 10x10, but i was only trying to list edge parities.

I would have gone even further than 11*11, but excel decimal to binary craps out at 512... :)

I've now found a workaround for the Excel dec2bin 512 limit...
There seems to be a pattern in the number of types of edge parity...

5x5 & 6x6 : 1
7x7 & 8x8 : 3
9x9 & 10x10 : 7
11x11 & 12x12 : 15
13x13 (and presumably 14x14) : 31

So each odd/even pair of cubes has 2x+1 types of parity than the previous pair

So 15x & 16x should have 63, 17x & 18x 127, and the newly released 19x should have 255!

And if you've seen Code Bullet's Youtube simulation of a 100x100 cube, that would presumably have 2.81745*10^14 kinds!! :)

Not that you'll have more than a few types on any individual solve, of course... :)
 
Last edited:

vidcapper

Member
Joined
May 22, 2020
Messages
81
If you look at 1m35s of this 19x19 solve, you'll see edge parity that i believe needs 5 seperate algs to sort!

 

RCastle

Member
Joined
Aug 20, 2020
Messages
12
well at this point i got it all figured out and i got the single parity algorithm i need to solve the single tredge parity so i'm all set now, (all other versions of parity i can turn into this one ). I got my time under 30 minutes and for someone over 50 i think that's pretty good. Thanks again to the gentleman who showed me the secret to putting the 8th solved tredge in the last slot of one layer, that was the door i needed open to solve the rest of the cube. I appreciate it when people are forthcoming with the answers asked for, now i can look to do the same for others.
 

vidcapper

Member
Joined
May 22, 2020
Messages
81
Which do you find more challenging, centre-building, or edge-pairing (say from 6x6 upwards)?
 

Sub1Hour

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Jun 4, 2018
Messages
1,409
Location
*Insert Comical Location or Coordinates"
Which do you find more challenging, centre-building, or edge-pairing (say from 6x6 upwards)?
They are different and require different skillsets to be good at either one. Being good at edges helps a little bit at building centers, but it certainly doesn't make you automatically good, and vice versa. Center building is more based on how fast you are able to see and turn, while edge pairing is more centered around lookahead and more calculated moves. I think that solves ride more on the edge pairing than the center building, but I would say its easier to get better at edge pairing than center building.
 
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