• Welcome to SpeedSolving.com — the world’s largest puzzle community!

    You’re currently browsing as a guest, which means you have limited access to discussions, resources, member profiles, and community features.

    Join 50,000+ cubers and puzzle enthusiasts from around the world to ask questions, share solves, improve faster, and be part of the community.

    Registration is free, fast, and easy — create your account today.

    Already a member? Log in here to hide this message and start participating.

[Help Thread] FMC Discussion

Found a weird skeleton on this scramble that leaves 3 edges and 4 corners, and got stuck after that lol

B' L D R U R F U' L F U2 F' R2 F L2 B R2 U2 F' R2 U

pairs: D’ U F’
1x1x3: B’ D’ R’ D2
double x cross: L B2 R F2 R F2
F2L-1: R D R’
leave 4C3E: D F’ D2 F D2

I tried putting the skeleton in IF but it says that there are 7 unsolved corners and 11 unsolved edges. Is there something I'm doing wrong?
Try changing your ’ s to ' s
 
Sorry for posting so much recently, I've grown to like FMC

A disappointing 29:
B F2 D2 B F2 L2 B2 L R' F' L' U R F D' L B' L2 U
B F2 D2 B F2 L2 B2 L R' F' L' U R F D' L B' L2 U

F D' B R' // pseudo 2x2x2
B2 L' U // 2x2x3
B D' L' D L // pseudo F2L-1
(D) // F2L-1
(B R' B' R B R D' R' D)
Skeleton: F * D' B R' B2 L' U B D' L' D L D' R D R' B' R' B R B' D'
* B U B' D2 B U' B' D2

F B U B' D2 B U' B' D B R' B2 L' U B D' L' D L D' R D R' B' R' B R B' D' (29)
The insertion was optimal, silly scramble though.

I also found this:
F D' B R' B2 F' D F //blocks
(D2 U') //fix (F2L-1 and an edge)
And Fabio found
(D B U' B2 R B' D) //223
 
Emilien did the skeleton and I inserted :p (We should really hold team FM as an official event !)

S // R' U' F U2 F D2 F2 D2 R2 F' D2 L F' D B' D U R' F U' F R F R' U' F
I // F' U R F' R' F' U F' R U' D' B D' F L' D2 F R2 D2 F2 D2 F' U2 F' U R

(F' R' U L B) // 2x2x2 (5)
(U' F' U F' L2 F') // 2x2x3 (6)
D L D' L' D2 L' D2 L2 // 2E2C

Skel // D L D' L' D2 L' D2 L2 * F L2 F U' F U B' L' U' R F - 19

* D' F L2 B' U B' U' B2 L2 F'

Solution // D L D' L' D2 L' D2 L2 D' F L2 B' U B' U' B2 F U' F U B' L' U' R F - 25 Moves
 
F2 L2 F2 U' L2 D' B2 D' U' R2 F2 R U L U F D' L U' L2 R
inverse: R’ L2 U L’ D F’ U’ L’ U’ R’ F2 R2 U D B2 D L2 U F2 L2 F2
inverse:
pseudo 2x2x2: L D R
normal:
2x2x2: D2
EO: U2 L’
pair: U2
inverse:
pseudo 2x2x3: L2 B U B2
normal:
B’ U B’ F U’ F’ B L2 U’ F U F’

skeleton: D2 U2 L’ U2 B’ U B’ F U’ F’ B L2 U’ F U F’ B2 U’ B’* L2 R’ D’ L’
* B2 L’ F2 L B2 L’ F2 L

D2 U2 L’ U2 B’ U B’ F U’ F’ B L2 U’ F U F’ B2 U’ B L’ F2 L B2 L’ F2 L’ R’ D’ L’ (29)

Took over an hour because I was trying out different solutions. Found this F2L too:
2x2x2: F2 D2 R D2 R2
inverse
pseudo 2x2x3: D’ L F’ D’ F2 L
normal
F2L: L2 F’ L D F
 
Thanks for all the tips! I think I did it right...?

30 is a very nice result! And yes, you're right in your cancellation arithmetic. Inserting R' D' immediately after D R is a nice way to cancel 4 moves.

Just wondering why you didn't just add the L2 onto the end of your skeleton? Doesn't make much difference; I'm just not sure there's any benefit to leaving it out...
 
I just won't get better at FMC, but I really need to... Can someone find a nice finish? (17 move F2L-1)

Scramble: R' U' F D U F2 D2 L2 F2 U F2 U L' B L' D U B2 L D U2 L U2 R' U' F
Inverse: F' U R U2 L' U2 D' L' B2 U' D' L B' L U' F2 U' F2 L2 D2 F2 U' D' F' U R

R B L2 U L U' B D' B' U L D L' D2 F D F' // F2L-1
( R D R' D2) // block
(R2 F' R' F D2 R' D' R D' R' L' D2 L D L' D L) //F2L finish cancelled in 2GLL


Solution: R B L2 U L U' B D' B' U L D L' D2 F D F' L' D' L D' L' D2 L R D R' D R D2 F' R F R2 D2 R D' R' (38 Moves.)

Couldnt find anything decent after F2L-1 :(
 
I just won't get better at FMC, but I really need to... Can someone find a nice finish? (17 move F2L-1)

Scramble: R' U' F D U F2 D2 L2 F2 U F2 U L' B L' D U B2 L D U2 L U2 R' U' F
Inverse: F' U R U2 L' U2 D' L' B2 U' D' L B' L U' F2 U' F2 L2 D2 F2 U' D' F' U R

R B L2 U L U' B D' B' U L D L' D2 F D F' // F2L-1
( R D R' D2) // block
(R2 F' R' F D2 R' D' R D' R' L' D2 L D L' D L) //F2L finish cancelled in 2GLL


Solution: R B L2 U L U' B D' B' U L D L' D2 F D F' L' D' L D' L' D2 L R D R' D R D2 F' R F R2 D2 R D' R' (38 Moves.)

Couldnt find anything decent after F2L-1 :(
There's B' D2 B R D R' to 5 corners, insertion finder gives 32 moves after that.
Or this cool ending of
D2 B' D' B R' B R B'//ZBLS
x2 y' R U2 R' U' R2 D R' U R D' R' U2 R'//ZBLL
which cancels 2 moves and gives 36 (not that great but cool ZBLL)
 
R U' B' L D2 U' R' F2 B L R F L' U2 R2 L B2 D L R

Weekly FMC
F2 R2 L B L2 B'//Heise type blocks I guess
U' B U2 B' U//another 2x2x1
L F R//F2L-1
R U' R' F' U2 F U2//AB4C
AB4C in 20 moves, I had to go out for stuff so I'll look for insertions later.
 
Last edited:
cool stuff for Weekly FMC
R U' B' L D2 U' R' F2 B L R F L' U2 R2 L B2 D L R

B R2 B' D' // EO + blocks
F2 R2 // roux block
L @ B L' F U2 // 3c5e

@ = L B' L' B // inserted sledge cancels 2 and solves 2 edges

B R2 B' D' F2 L2 # R2 ^ B' L' B2 L' F U2
^ = [R2, S] // 6 mover cancels 3, 16 to L3C
# = [L2, F R F'] // corner comm cancels 4

Final solution: B R2 B' D' F' R F' L2 F R' F2 B U2 F B2 L' B2 L' F U2

20 moves
 
F2 U2 L2 R U2 L' D2 U2 R B2 R' F2 U2 B' L2 U2 R' F D R2 D2 R'

Premove: D2
F2 D2 U2 L'//2x2x2 (4/4)
U' F U R2//2x2x3 (4/8)
L' U2 L//EO (3/11)
F' D' F U F' D//F2L-1 with keyhole (6/17)
F' U2 F//WV (3/20)
F' U2 F D' F' U F' U F' U' F2 D' F U F' D2//V perm, those cancellations! (16/36)

Final: F2 D2 U2 L' U' F U R2 L' U2 L F' D' F U F2 U F' U F' U' F2 D' F U F' (26 moves!)
 
25 moves PB single, first sub30 lmao. Crazy scramble, but whatever

Normal: F2 U R2 F2 D' R2 D' F2 R2 D L' U' F' U2 B2 D2 L2 D L2
Inverse: L2 D' L2 D2 B2 U2 F U L D' R2 F2 D R2 D F2 R2 U' F2

D B2 //222
(F2 U L') //223
U F' U F U' L' U' L F L F L' F' //L3C

skeleton: D B2 U F' U F U' L' # U' L F L F L' F' L U' F2

#= B' D B U2 B' D' B U

final solution: D B2 U F' U F U' L' B' D B U2 B' D' B U L F L F L' F' L U' F2 (25 moves ^^)

insertion was optimal yay

everyone interested in FMC should try this scramble :)
 
First sub30! (scramble from last weekly comp)

Scramble: F' R' L' D' R' F L' U2 B' R' F2 R2 U' F2 U2 R2 B2 U2 R2 F2 U

R' U R2 F' //EO (4/4)
D R' D2 (D) //2x2x2 (4/8)
R U2 B2 R' B2 R2 //2x2x3 (6/14)
(U' B2 U2 B2) //F2L-1 (4/18)
(U R' U R U2) //to L3C (5/23)

skeleton: R' U R2 F' D R' D2 R U2 B2 R' B2 R2 U2 R' U' R U' B2 U2 B2 U D' (23 moves)

But after EO+CO the following finish is better:

R' U R2 F' D @ R' D2 R U2 B2 R' B2 R2 U2 R' U' R D' R2 U2 R2 (21 moves)

@ = R2 [F, R' B2 R] R2

Solution: R' U R2 F' D R2 F R' B2 R F' R' B2 R2 D2 R U2 B2 R' B2 R2 U2 R' U' R D' R2 U2 R2 (29 moves)

I was pretty disgusted that a normal insertion was not possible. Anyone tips?
 
Has anyone ever done 2 corner insertions to solve 6 corners? It's possible when you have 2 separate 3cycles with no 'twists' between them, but I don't think I've seen it being done before.
 
Fantastic Manhattan Competition 2016 Scramble 2: R' U' F R' D2 F2 R' B2 R' D2 L2 D2 B' F2 U2 F' L U R2 F2 R' U2 L F' R' U' F
I have found this crazy start on inverse:

B' U2 D' F' //EO + 3x2x1 + 2x2x1 (4/4)

The best solution I've found in 1 hour was however 26 (actually I've found 2 of them):
- B' U2 D' F' +
R' L' U' L' U
L' B2 L //3c4e
- = R2 D' U F2 D U
+ = F2 * R' L D2 R L'
* = U L D' L' U' L D L'

And

B' U2 D' F'
L D' L' D' * L' R2
U2 L' U L U2 R L' //2c2e
* = F R' D2 L B' L' D2 R2 F' R'

Later I have found this skeleton, which IF can solve in 23:
B' U2 D' F'
D' L2 R2 U R' L2 F2 R2 L2 //4 corners left in 13

Can anyone do better than this? That start is really good.

EDIT: Also this "All but a ZBLL I don't know" in 12
B' U2 D' F'
D2 L2 R2
U L U2 L' R
 
I found a nice solution for the third scramble of the German forum competition:
Scramble: R' U' F L2 D U R2 B2 D' L2 R2 U B' F' L2 U R2 F' R' D2 L F' R' U' F
Inverse: F' U R F L' D2 R F R2 U' L2 F B U' R2 L2 D B2 R2 U' D' L2 F' U R

In found a 26 move solution in 1 hour. After that I tried to find a good continuation for a start with some blocks, which I had found on the inverse scramble. And that's what I found:
inverse:
2x2x3: B2 U L' B2 R2 U B' U' D R2 // 10 moves
switch
L3C: U2 L' U2 L D' F2 D R2 U' R2 // 10 moves

Skeleton: U2 L' U2 L D' * F2 D R2 D' B U' R2 B2 L U' B2 // 16 moves ...
* D L' U2 L D' L' U2 L

Solution: U2 D' L' U2 L F2 D R2 D' B U' R2 B2 L U' B2
16 moves

Cube Explorer finds exactly this solution as optimal solution.
 
I have found this crazy start on inverse:

B' U2 D' F' //EO + 3x2x1 + 2x2x1 (4/4)

The best solution I've found in 1 hour was however 26 (actually I've found 2 of them):
- B' U2 D' F' +
R' L' U' L' U
L' B2 L //3c4e
- = R2 D' U F2 D U
+ = F2 * R' L D2 R L'
* = U L D' L' U' L D L'

And

B' U2 D' F'
L D' L' D' * L' R2
U2 L' U L U2 R L' //2c2e
* = F R' D2 L B' L' D2 R2 F' R'

Later I have found this skeleton, which IF can solve in 23:
B' U2 D' F'
D' L2 R2 U R' L2 F2 R2 L2 //4 corners left in 13

Can anyone do better than this? That start is really good.

EDIT: Also this "All but a ZBLL I don't know" in 12
B' U2 D' F'
D2 L2 R2
U L U2 L' R


Using your start, I found this:
(B' U2 D' F') 4
(D2 R2 L' U') orient corners 8
(L D R L' F2 L R' D) domino reduction 16
(L' F2 R' F2 R B2 L' D2 R D2 R') 27
 
I have found this crazy start on inverse:

B' U2 D' F' //EO + 3x2x1 + 2x2x1 (4/4)

Here's a finish in 23
(B' U2 D' F') // EO + Blocks
(D2 L2 R2)
B2 R' U' // 2E4C

Skel // B2 R' * U' R2 L2 D2 F D U2 B - 10

* B2 D' R2 + U R2 B2 D L2 U' L2 U
+ B U F' U' B' U F U'

Solution // B2 R' B2 D' R2 B U F' U' B' U F R2 B2 D L2 U' R2 D2 F D U2 B - 23 Moves

EDIT: Also this "All but a ZBLL I don't know" in 12
B' U2 D' F'
D2 L2 R2
U L U2 L' R



By inserting that ZBLL we can get 24
(B' U2 D' F')
(D2 R2 L2)
(U L U2 + L' R B2)

+ L' U2 L2 U L U2 R' D F2 D' R U' L

Solution // B2 R' U R' D F2 D' R U2 L' U' L2 U2 L U2 L' U' L2 R2 D2 F D U2 B - 24 Moves
 
Back
Top