[Help Thread] FMC Discussion

[porkynator]

I want to share a nice 27 HTM (23 STM) solve; the result isn't crazy good (for me is better than average, but probably not for most of the top FMCers) but I find it particularly nice for its insertions

Scramble: B2 F2 U' L2 R2 U' R2 F2 D R2 B2 L B' F' L U R D B2
Solution: B L D' L B R' B' R L' D R L' D U2 L' D2 L U R2 U B D' R2 L2 U D' B' (27 HTM, 23 STM)

B * D R //2x2x1 (3/3)
U L2 U //3x2x1 (3/6)
F U' ° F2 B //All but 3 corners and 5 edges (4/10)

* = L D' R D + L' D' # R' D //3c, 1 move cancels out (7/17)
+ = D' R' L B R' B' R L' D R //Edge commutator, solves 1 edge, 4 moves cancel out (6/23)
# = E2 //Solves all remaining edges but affects centers, 1 move cancels out (1/24)
° = E S2 E' S2 //Centers, 5 moves cancel out (3/27)

I've found the insertions in this order: *, #, +, °. At first I had solve # and ° with only 1 insertion, then I decided to separate them and improved my solution by 1 move

IF ends in 23:
B [@1] D R U L2 U F U' F2 B
Insert at @1: R' U' D B D' B U D' R' D
After the 1st insertion: B R' [@2] U' D B D' B U D' R' D2 R U L2 U F U' F2 B
Insert at @2: L2 U' D F2 U D'
After the 2nd insertion: B R' L2 U' D F2 B D' B [@3] U D' R' D2 R U L2 U F U' F2 B
Insert at @3: B' D F D' B D F' D'
Fewest moves: 23. 11 moves cancelled
The final solution: B R' L2 U' D F' B D' B D F' D2 U R' D2 R U L2 U F U' F2 B

 

[Attila]

I want to share a nice 27 HTM (23 STM) solve; the result isn't crazy good (for me is better than average, but probably not for most of the top FMCers) but I find it particularly nice for its insertions

Scramble: B2 F2 U' L2 R2 U' R2 F2 D R2 B2 L B' F' L U R D B2
Solution: B L D' L B R' B' R L' D R L' D U2 L' D2 L U R2 U B D' R2 L2 U D' B' (27 HTM, 23 STM)

B * D R //2x2x1 (3/3)
U L2 U //3x2x1 (3/6)
F U' ° F2 B //All but 3 corners and 5 edges (4/10)

* = L D' R D + L' D' # R' D //3c, 1 move cancels out (7/17)
+ = D' R' L B R' B' R L' D R //Edge commutator, solves 1 edge, 4 moves cancel out (6/23)
# = E2 //Solves all remaining edges but affects centers, 1 move cancels out (1/24)
° = E S2 E' S2 //Centers, 5 moves cancel out (3/27)

I've found the insertions in this order: *, #, +, °. At first I had solve # and ° with only 1 insertion, then I decided to separate them and improved my solution by 1 move

IF ends in 23:
B [@1] D R U L2 U F U' F2 B
Insert at @1: R' U' D B D' B U D' R' D
After the 1st insertion: B R' [@2] U' D B D' B U D' R' D2 R U L2 U F U' F2 B
Insert at @2: L2 U' D F2 U D'
After the 2nd insertion: B R' L2 U' D F2 B D' B [@3] U D' R' D2 R U L2 U F U' F2 B
Insert at @3: B' D F D' B D F' D'
Fewest moves: 23. 11 moves cancelled
The final solution: B R' L2 U' D F' B D' B D F' D2 U R' D2 R U L2 U F U' F2 B

Congratulations, using insertions for corners, edges and centers in 1 solution, this is great

 

[guusrs]

I've seen nice posts lately!
Sometimes I try the Atilla/Javier method but 'm still struggling.
For example in FMC 2014-04, 2 weeks ago.
Scramble: D F2 L2 F' R2 F D F' B' L' U2 R2 D' F2 L2 B2 U2 R2 U' F2 D'
6 move corner solve: F D' L F D2 F'
Can anyone extended this to a sub 30-solve?
Because I couldn't

 

[porkynator]

I try that method too sometimes
The best I could do with that scramble was:
F D U2 R F R2 B' D //Corners and 2 edges (8)
R2 L2 //1e (2)
U2 L U D' B' U2 //2e (6)
L B R U D' F' R' B' //2e (8)
Now I would probably try to go on with insertions, but without any hope to get sub-30.

 

[irontwig]

Previously I've only known the 12-move 2-twist [R' B D2 B' R, U2], but this week Tomoaki used a alg that can be written thusly: (R' D2 R x2 y')4

 

[okayama]

Previously I've only known the 12-move 2-twist [R' B D2 B' R, U2], but this week Tomoaki used a alg that can be written thusly: (R' D2 R x2 y')4

I understand it as [R' D2 R, B' U2 B].

There are several possible algs for the same state:

• [R' D2 R, B' U2 B]
• [L U2 L', F D2 F']
• [B R2 B', U L2 U']
• [F' L2 F, D' R2 D]
• [D F2 D', R B2 R']
• [U' B2 U, L' F2 L]

But in reality you don't have to memorise them, because 1-move setup brings those 2 corners onto the same face.
For example, [R' D2 R, B' U2 B] = R' [D2, R B' U2 B R'] R = B' [B R' D2 R B', U2] B.

EDIT: Do you live in Japan now? On April 5th, a competition including FMC mean of 3 is planned at Kanazawa, let us go if you're still in Japan!

 

[irontwig]

EDIT: Do you live in Japan now? On April 5th, a competition including FMC mean of 3 is planned at Kanazawa, let us go if you're still in Japan!

Not really, but I'll stick around till May. By the way the German forum (http://www.speedcubers.de/showthread.php?tid=4572&page=185) is a good place if one wants to practice getting into the mindset of doing a mean.

 

[Attila]

Scramble: D F2 L2 F' R2 F D F' B' L' U2 R2 D' F2 L2 B2 U2 R2 U' F2 D'
6 move corner solve: F D' L F D2 F'
Can anyone extended this to a sub 30-solve?

B L2 R D’ U2 L U2 R’ F all corners and 4 edges,
U2 D’ R D2 F B’ L2 D’ more 2 edges,
L’ R D L R’ B’ U2 B L R’ U’ F2 L’ LSE. 30 HTM/26 STM moves
I couldn’t find any better.

 

[cubeaddicted]

How do you apply conjugates? I don't get it.

 

[irontwig]

How do you apply conjugates? I don't get it.

What conjugates? For any though, you just do some moves that get the pieces in the right place (the setup) for the comm/alg/single move/whatever, do what you wanted to do and then undo the setup.

 

[cubeaddicted]

Okay, got it. Thanks!

And another thing, does any one really use LPELL?

 

[kinch2002]

Okay, got it. Thanks!

And another thing, does any one really use LPELL?

I don't know of anyone that would use it every time. I think it's useful to know the algs, just so you can try them during a solve and you may get lucky with them

 

[Brest]

U2 B2 L2 R2 D' L2 R2 B2 U2 R2 U R' U2 B U' F2 U2 R D2 R U2

started with:
D B' L' B // 3x2x1
R2 U' B U2 // 3x2x2
F D' F D // F2L-1
R F R' // F2L +EO
didn't find anything nice

changed start to:
F2 // premove

D B' L' B // 3x2x1
U' B2 D B' U2 // 3x2x2
D2 F' D2 // 2x2x1 (find premove F2)
R F R' // EO
F D' F' D' F D' // lol finish
F2 // premove

D B' L' B U' B2 D B' U2 D2 F' D2 R F R' F D' F' D' F D' F2 (22)

 

[whauk]

i found a very promising start on a scramble. can somebody make use of all this blocks?

scramble: F' U F D' U' F2 U F L' B F' D' R2 F' D B F' R D U B' F' L' R' F' L2 R' B R2 U'
blocks: L U2 F D2 F'

looks to me like the cube could be finished easily from there but i didn't find a continuation.

 

[okayama]

My solution from Kanto Open 2014.

Scramble: B U2 F' U2 L2 D2 F' D2 U2 F' R' U' B2 L' D R U2 L2 D2
Solution: R' F2 R' F' R' F' R F' R F U' R U R' F' R' D2 F' R' D L' U R' B U R' D2 R U' R' D2 R2 L2 (33 moves)

Spoiler

30 min backup solution.

NISS solve.

(Inverse)
2x2x1 block: R' L2 B'
2x2x2 block: R U' L
2x2x3 block: D' R F D2

(Normal)
Pre-scramble: D2 F' R' D L' U R' B R L2

F2L minus 1 slot: R' F2 R'
Finish F2L: F' R' F' R
All but 3 corners: F' R F U' R U R' F' R'
Correction: D2 F' R' D L' U R' B * R L2

Insert at *: U R' D2 R U' R' D2 R

There are other promising starts, for example on normal

D L U' R F2 D2 B2 D' U2 R2 ...

but I couldn't find any good finish in time.

Yuhei Takagi showed me another promising starts:

XX-cross: R' U R2 U R' L2 D' L' R'

Congrats to winners within 30 moves!

 

[uesyuu]

My solution from Kanto Open 2014.

Scramble: B U2 F' U2 L2 D2 F' D2 U2 F' R' U' B2 L' D R U2 L2 D2
Solution: R' F2 R' F' R' F' R F' R F U' R U R' F' R' D2 F' R' D L' U R' B U R' D2 R U' R' D2 R2 L2 (33 moves)

Spoiler

30 min backup solution.

NISS solve.

(Inverse)
2x2x1 block: R' L2 B'
2x2x2 block: R U' L
2x2x3 block: D' R F D2

(Normal)
Pre-scramble: D2 F' R' D L' U R' B R L2

F2L minus 1 slot: R' F2 R'
Finish F2L: F' R' F' R
All but 3 corners: F' R F U' R U R' F' R'
Correction: D2 F' R' D L' U R' B * R L2

Insert at *: U R' D2 R U' R' D2 R

There are other promising starts, for example on normal

D L U' R F2 D2 B2 D' U2 R2 ...

but I couldn't find any good finish in time.

Yuhei Takagi showed me another promising starts:

XX-cross: R' U R2 U R' L2 D' L' R'

Congrats to winners within 30 moves!

I found good finish using your "D L U' R..." start.

start: D L U' R F2 D2 B2 D' U2 R2
F2L-1: B' R'
Finish F2L(F face): U2 R' U2 R U2 R' U' R
LL: D2 F U' L2 U F' D' B2 D' B'
30moves

 

[okayama]

I found good finish using your "D L U' R..." start.

start: D L U' R F2 D2 B2 D' U2 R2
F2L-1: B' R'
Finish F2L(F face): U2 R' U2 R U2 R' U' R
LL: D2 F U' L2 U F' D' B2 D' B'
30moves

Wooow, I should have found that! Not so difficult...

And could you post your 30-move solution?

 

[uesyuu]

Wooow, I should have found that! Not so difficult...

And could you post your 30-move solution?

My solution:
D L R' D2 F U F' D L' D' F' L' B L F L' B' R' U2 R L D L' U L D' L2 U' L D'(30f)

Premove: D'
2x2x2: D L R' D2
square: F U F'
F2L-2: D L' D' * L'
F2L-1: R' U2 R @
All but 5 corners: U L' U' L

* = F' L' B L F L' B' L
@ = L D L' U L D' L' U'

This 5 cancel insertion is optimal !

 

[sneze2r]

I did some FM training but i couldn't find any good finish after 2x2x3...

scramble: D U2 L' U B' F L2 B D2 F2 L' D2 L' D B2 L2 U2 B' L' R2 U2 R2 U' F B2
inverse scramble: B2 F' U R2 U2 R2 L B U2 L2 B2 D' L D2 L F2 D2 B' L2 F' B U' L U2 D'

on inverse scramble i've found not bat 2x2x3:
B' L U L' U' B' D' B' U2(2x2x3)
but then i get stucked... so i've applied premoves: D2 F' and found this:
F2 D' R' D' R D' R F R'(F2L)
and i got LL case which i can finish in 20 moves... but it is weak result for me... can anyone find something better?

 

[Joey VOV]

I don't really do FMC but I found a 28 move solution to a scramble using CFOP, it was during a speedsolve and I got a slow 10.67, but here it is.
Scramble: R' B2 D2 R' U2 R D2 B2 R' U2 R2 D R B F D B2 U' F' D B2
Solution: U2 D F' R U' F' U B D B' D' R' D' R D2 R' D R F D F' D' L' F' R F R' L
I modified the solution so there are no rotations after the scramble, Obviously I did't actually solve it like that when I did.