[Help Thread] FMC Discussion

[Memphis3000]

Nice one Kit! If you don't mind me asking, what exactly is skype FMC?

 

[ottozing]

FMC while on Skype with other people doing FMC

My solution on the same scramble:

F' D R' F D R2 B' D2 R' F U2 L2 F R2 D2 B' L2 F' U2 L2

Premove D
B2 R' B2 R U2 F' R' B' D R2 (2x2x3)
D2 L D L' (F2L-1)
F2 D R' D' R (F2L)
L' F' L F' L' F2 L F (Scrub LL)

Solution: B2 R' B2 R U2 F' R' B' D R2 D2 L D L' F2 D R' D' R L' F' L F' L' F2 L F D (28)

 

[Ranzha]

My solution on the same scramble as Jay and Kit:

F' D R' F D R2 B' D2 R' F U2 L2 F R2 D2 B' L2 F' U2 L2

B2 R' F2 B2 R' U' B L' B2 // 2x2x3 [9]
switch
F' D R D' F2 // F2L [5/14]
U R2 U' R2 U' B U B' // CLL, AB3E [8-1/21]

Skeleton:
B2 R' F2 B2 R' U' B L' B' U' B' U R2 U R2 @U' F2 D R' D' F [21]

@ D2 L2 U2 B' U2 L2 D2 F' [8/29]

 

[pinser]

F' D R' F D R2 B' D2 R' F U2 L2 F R2 D2 B' L2 F' U2 L2

D L F' B2 D2 U' F' R' F D' B D F2 U L' B L //F2L-1 (17/17)
U' B' U B U' B' U' B U' //L4C (9/25)
How should I sticker the pieces and go about doing the insertions?

 

[Kit Clement]

F' D R' F D R2 B' D2 R' F U2 L2 F R2 D2 B' L2 F' U2 L2

D L F' B2 D2 U' F' R' F D' B D F2 U L' B L //F2L-1 (17/17)
U' B' U B U' B' U' B U' //L4C (9/25)
How should I sticker the pieces and go about doing the insertions?

This is a case of two 2-cycles, so sticker them A->B->C and 1->2->3 on each of the cycles to get the way to solve both pieces (two of the four cubies will have two stickers). You would try to solve just one corner on the first insertion, involving any two other pieces with a sticker. This gives you a lot of freedom on the first insertion, so try to cancel at least 3-4 moves, if not more. After that, it's just L3C.

 

[Memphis3000]

FMC while on Skype with other people doing FMC

Oh, lol

 

[Cale S]

25 single from the weekly comp, ties my second best (which was official)

Spoiler

Found in just over 15 minutes:

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

F2 U' // square
L B2 // 2x2x2
R F R2 // 2x2x3
switch to inverse: U2 L' U L U2 F' // F2L - 1
switch to normal: R U R' U' R U R' // F2L
R B2 L' B' L B' R' U // LL

final solution: F2 U' L B2 R F R' U R' U' R U B2 L' B' L B' R' U F U2 L' U' L U2 (25)

 

[pinser]

For 2 twisted corners, is it better to do two 3cycles, or just insert a corner twist?

 

[Kit Clement]

For 2 twisted corners, is it better to do two 3cycles, or just insert a corner twist?

Almost always two 3-cycles. The first 3-cycle can typically cancel 6 moves, just because there is so much freedom in how you can choose that insertion.

 

[jpbrc]

Hardest scramble: F U' F2 D' B U R' F' L D' R' U' L U B' D2 R' F U2 D2
Solution: B' U2 L F D R' U' B' L' F B2 D2 B' D' B D' B2 D F D' B F D2 F2 L2 D2 F' D' (28) Finally sub30

Spoiler

B' U2 L F D R' U' // 2x2x2
B' L' B // EO
(switch)
D F D2 L2 // 2x2x3
F2 D2 F' D F' // pseudo F2L
(switch)
F B D2 B' D' B D' B' D // AB3C


Skeleton: B' U2 L F D R' U' B' L' F B2 D2 B' D' B D' B' D F D' * F D2 F2 L2 D2 F' D'

*= D F' D' B' D F D' B

Other interesting solutions that i found using IF :
32:

Spoiler

B' U2 L F D R' U' // 2x2x2
B' L' B // EO
(switch)
D F D2 L2 // 2x2x3
F' D' F' D2 F2 D F D2 // AB5C

Skeleton: B' U2 L F D R' U' B' [@1] L' B D2 F' D' F2 D2 F D F L2 D2 F' D'
Insert at @1: D R D' L' D R' D' L
After the 1st insertion: B' U2 L F D R' U' B' D R D' L' D R' D' B D2 F' D' F2 D2 F D F L2 D2 F' D' [@2]
Insert at @2: D F U F' D' F U' F'
Fewest moves: 32. 6 moves cancelled
The final solution: B' U2 L F D R' U' B' D R D' L' D R' D' B D2 F' D' F2 D2 F D F L2 D2 U F' D' F U' F' (32)

30

Spoiler

B' U2 L F D R' U' // 2x2x2
(switch)
D2 F' L2 D // EO
F' L B' L2 B L2 // AB6C

Skeleton: B' U2 L F D [@1] R' U' L2 B' L2 B L' F D' L2 F D2
Insert at @1: D F' U2 F D' F' U2 F
After the 1st insertion: B' U2 L F D2 F' U2 [@2] F D' F' U2 F R' U' L2 B' L2 B L' F D' L2 F D2
Insert at @2: D' B2 D F D' B2 D F'
After the 2nd insertion: B' U2 L F D2 F' U2 D' B2 D F D' B2 F' U2 F R' U' L2 B' L2 B [@3] L' F D' L2 F D2
Insert at @3: B' L2 B R' B' L2 B R
Fewest moves: 30. 11 moves cancelled
The final solution: B' U2 L F D2 F' U2 D' B2 D F D' B2 F' U2 F R' U' L2 R' B' L2 B R L' F D' L2 F D2

 

[TheDubDubJr]

Has anyone seen anything on Anton Krokhmal's 22 solution from Winter West Ukraine 2015 just last weekend?

https://www.worldcubeassociation.org/results/p.php?i=2012KROK01

 

[Jimmy Liu]

I found the result paper at Russian cubing forum.
It seems that he used NISS method so we can't know actually what he was doing.

http://vk.com/ruspeedcubing



Edit:

Scramble: U' L U2 B D' R' F' D2 L U' B2 R2 F' U2 B' R2 U2 D2 L2 B

apply on normal:

D2 L D2 - pseudo 2x2x2 block

switch to inverse:

D' - 2x2x2 block
L' U B2 U- pseudo 2x2x3 block
D' B D B2 L' U - F2L-1
B U' B' U - F2L
U' B' L' B L U - OLL, PLL skip!
B - AUF

Solution: D2 L D2 B' U' L' B' L B2 U B' U' L B2 D' B' D U' B2 U' L D (22 moves)

 

[Krohag92]

My 22 solution from Winter West Ukraine 2015

Scr: U’ L U2 B D’ R’ F’ D2 L U’ B2 R2 F’ U2 B’ R2 U2 D2 L2 B

Scr’: B’ L2 D2 U2 R2 B U2 F R2 B2 U L’ D2 F R D B’ U2 L’ U

1)On inv: D’

2)On scr: D2 L D2 - 2х2х2 (4)

3) On inv: L’ U B2 U
D’ B D B2 L’ - 2х2х3 (13)
U – F2L-1 (14)
B U’ B2 L’ B L U B

Final Solution: D2 L D2 B’ U’ L’ B’ L B2 U B’ U’ L B2 D’ B’ D U’ B2 U’ L D / 22 moves

I found this solution for 15 minutes

 

[Prakhar]

18 move FMC wtf . But will not count as PB because it was kind of lol scramble.

Scramble- U' D R U D B' D B2 L2 R' B2 U B2 D2 R' L2 F2 U' D2 F' D F2 B L' U' (given by Shivam Bansal​)

Spoiler

Solution- L' F B U' B U B U B U B U' B U B2 R' B2 U

On normal
L' F //2x2x2
B2 U B U2 // psuedo 2x2x3

Switch to inverse
Pre scramble: U2 B' U' B2 F' L
U' // 2x2x3
B2 R // F2L-1
B2 U' B' U B' // L3E

Skeleton- L' F B2 U B + U2 B U' B U B2 R' B2 U
Insert at +: B (B2 U' B' U' B U B U B U' B) B'
6 moves cancel.

Try the scramble. Should I count it as UCR??

lol just kidding, I will not even count as PB because it was kind of lol scramble.

 

[Sebastien]

My 22 solution from Winter West Ukraine 2015

Scr: U’ L U2 B D’ R’ F’ D2 L U’ B2 R2 F’ U2 B’ R2 U2 D2 L2 B

Scr’: B’ L2 D2 U2 R2 B U2 F R2 B2 U L’ D2 F R D B’ U2 L’ U

1)On scr: D’

2)On inv: D2 L D2 - 2х2х2 (4)

3) On scr: L’ U B2 U
D’ B D B2 L’ - 2х2х3 (13)
U – F2L-1 (14)
B U’ B2 L’ B L U B

Final Solution: D2 L D2 B’ U’ L’ B’ L B2 U B’ U’ L B2 D’ B’ D U’ B2 U’ L D / 22 moves

I found this solution for 15 minutes

congratz!

You mixed up scr and inv in your description though.

 

[Krohag92]

congratz!

You mixed up scr and inv in your description though.

Thank you, I corrected

 

[porkynator]

A 22 move solution for a scramble from the German competition (#3 here).

Scramble: D2 F2 D' R2 D' U' R2 B2 D R' F U2 F L B D2 L' U B2
Solution: U2 L' B L' B' L' U2 L' F L' U' R' L B L' B' L' D L D' R F2 (22 HTM)

On inverse:
F2 * U L F' //2x2x2 (4/4)
L U2 L B L //Pseudo F2L-1 (5/9)
B' L U2 //All but 3 edges and 3 corners (3/12)

* = R' D L' D' L B L B' L' R //Setup + pair 3-cycle (10/22)

 

[coldsun0630]

Is there any good countinuation?
I see there some pairs, but can't finish with it...

Scramble: R2 F2 U2 L' F2 R' U2 F2 U2 L B2 D R' B2 D L D' F L2 D R B2 L2 D' F' U

Spoiler

(tried without NISS)

L2 D2 U B' F D' R2 F U2 R2 U' R U (F' R' D2 R2) // F2L-1

 

[lerenard]

I wanted to practice FMC, but found a 33-move solution in 10 minutes and gave up because I lost motivation to find something better:

scramble: D2 B D2 B2 U2 L2 U2 F R2 B' U2 D F D2 R F R U2 B' L' R2

B2 D F D' B // 2x2 (5)
L' U' L' U2 // 2x3 (4/9)
D' L' D2 F2 D' // EO + pair (5/14)
L2 F' L2 F2 L2 F L' F' L F // F2L (10/24)
x z y' R U2 R D R' U2 R D' R2 // COLL + EPLL skip (9/33)

alg.cubing.net

Is there a point where you give up because the solution you've found is already good enough for you? I feel like my solution was really lucky.

 

[Kit Clement]

I wanted to practice FMC, but found a 33-move solution in 10 minutes and gave up because I lost motivation to find something better:

scramble: D2 B D2 B2 U2 L2 U2 F R2 B' U2 D F D2 R F R U2 B' L' R2

B2 D F D' B // 2x2 (5)
L' U' L' U2 // 2x3 (4/9)
D' L' D2 F2 D' // EO + pair (5/14)
L2 F' L2 F2 L2 F L' F' L F // F2L (10/24)
x z y' R U2 R D R' U2 R D' R2 // COLL + EPLL skip (9/33)

alg.cubing.net

Is there a point where you give up because the solution you've found is already good enough for you? I feel like my solution was really lucky.

Jay once did this with a 27 in 20-25 minutes or so (?), gave up for 5 minutes, then found a 24 before the hour expired.