[Help Thread] FMC Discussion

[DuffyEdge]

Great start but I still suck at insertions:

Scramble - B2 R2 D2 F2 R2 F2 L2 U' B2 R2 B2 F' L2 B' R U L' F D2 L2 B2

Spoiler

(F’ U R’ B’ L U’) // XX-cross
B L’ B L D’ B D // F2L-1
B U B U’ L’ B L B’ // AB4C

Skeleton - (*) B L’ B L D’ B D B U B U’ L’ B L B’ U L’ B R U’ (**) F
(*) = L B R B’ L’ B R’ B’
(**) = L F’ R’ F L’ F’ R F

Solution - L B R B’ L’ B R’ L’ B L D’ B D B U B U’ L’ B L B’ U L’ B R U’ L F’ R’ F L’ F’ R F2 (34)

EDIT: Another thing, whenever I check afterwards on Insertion Finder, it changes all prime moves to non-prime. I can use it but I have to change all U' moves (say) to U2 U etc. in both my Scramble and Skeleton. Does anyone else have this problem? Apparently optimal was 30, so I'm far off

 

[irontwig]

Great start but I still suck at insertions:

Scramble - B2 R2 D2 F2 R2 F2 L2 U' B2 R2 B2 F' L2 B' R U L' F D2 L2 B2

Spoiler

(F’ U R’ B’ L U’) // XX-cross
B L’ B L D’ B D // F2L-1
B U B U’ L’ B L B’ // AB4C

Skeleton - (*) B L’ B L D’ B D B U B U’ L’ B L B’ U L’ B R U’ (**) F
(*) = L B R B’ L’ B R’ B’
(**) = L F’ R’ F L’ F’ R F

Solution - L B R B’ L’ B R’ L’ B L D’ B D B U B U’ L’ B L B’ U L’ B R U’ L F’ R’ F L’ F’ R F2 (34)

EDIT: Another thing, whenever I check afterwards on Insertion Finder, it changes all prime moves to non-prime. I can use it but I have to change all U' moves (say) to U2 U etc. in both my Scramble and Skeleton. Does anyone else have this problem? Apparently optimal was 30, so I'm far off

Use ', not ’.

 

[DuffyEdge]

Use ', not ’.

Ahh okay, thank you

 

[Bubtore]

Great start but I still suck at insertions:

Scramble - B2 R2 D2 F2 R2 F2 L2 U' B2 R2 B2 F' L2 B' R U L' F D2 L2 B2

Spoiler

(F’ U R’ B’ L U’) // XX-cross
B L’ B L D’ B D // F2L-1
B U B U’ L’ B L B’ // AB4C

Skeleton - (*) B L’ B L D’ B D B U B U’ L’ B L B’ U L’ B R U’ (**) F
(*) = L B R B’ L’ B R’ B’
(**) = L F’ R’ F L’ F’ R F

Solution - L B R B’ L’ B R’ L’ B L D’ B D B U B U’ L’ B L B’ U L’ B R U’ L F’ R’ F L’ F’ R F2 (34)

Nice start ! However, you should have switched 1 move earlier which leads to a good skeleton.
(you can see that you have a pseudo XXcross after 5 moves, so you know that you can finish it after the switch)

Spoiler

(F’ U R’ B’ L) // Pseudo XX-cross
U B R B' R' // F2L-1
B2 L B L' B2 // L5C

Skeleton // U B # R * B' R' B2 L B L' B2 L' B R U' F - 15
* R B' L' B R' B' L B
# B R' F2 R B' R' F2 R

Solution // U B2 R' F2 R B' R' F2 R' B' L' B R' B' L R' B2 L B L' B2 L' B R U' F - 26 Moves

edit : actually it's even better to start inserting before the F2L-1 :

Spoiler

(F’ U R’ B’ L) // Pseudo XX-cross
U B // 3E6C

Skeleton // U B L' B R * U' + F - 7
* D' B2 D U' L2 U
+ U B U' F2 U @ B' U' F2
@ U2 F' D' F U2 F' D F

Solution // U B L' B R D' B2 D U' L2 U B U' F2 U' F' D' F U2 F' D F B' U' F' - 25

IF gives 23 as optimal solution after the first insertion is done, however the second insert (first for solving corners) wouldn't cancel any moves, so it's not very human :

Spoiler

U B L' B R D' B2 D [@1] U' L2 F
Insert at @1: R F2 R' B' R F2 R' B
After the 1st insertion: U B L' B R D' B2 D R F2 [@2] R' B' R F2 R' B U' L2 F
Insert at @2: F2 R B2 R' F2 R B2 R'
Fewest moves: 23. 4 moves cancelled
The final solution: U B L' B R D' B2 D R2 B2 R' F2 R B2 R2 B' R F2 R' B U' L2 F

edit 2: by changing a bit the edge commutator the corners insertions get much better

Spoiler

Skeleton // U B L' B R * U' F - 7
* B2 U' D + L2 U D'
+ D' L D # R' D' L' D R
# D' R' U R D R' U' R

Solution // U B L' B R B2 U' L R' U R D R' U' D' L' D R L2 D' F - 21 Moves

 

[DuffyEdge]

This is the first time that I've managed to find an optimal insertion.

Scramble - B2 L D2 R’ F2 R’ F2 R’ U2 L2 B2 U’ L D’ F D2 R’ U B’

Spoiler

(U) L’ U (R’ D L2 U L’) // 2x2x3 block
B U R U’ // F2L-1
R B R B’ R B R’ B’ // F2L

U F R F’ R’ U’ R2 // AB3C

Skeleton - L’ U B U R U’ R B R B’ R B R’ B’ U F R (*) F’ R’ U’ R2 L U’ L2 D’ R U’
(*) = R2 F L F’ R2 F L’ F’

Solution - L’ U B U R U’ R B R B’ R B R’ B’ U F R’ F L F’ R2 F L’ F2 R’ U’ R2 L U’ L2 D’ R U’ (33)

Previous 5 attempts have all been sub 35

 

[RhysC]

My first actually decent FMC attempt

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

Spoiler

Inverse: B2 F2 L2 B2 F2 D2 R U2 R’ U2 R B L R’ D’ F’ L’ U’ L’ R’
(B L’ U’ L’ F D’) 2x2x2 (6/36)
(F’ R U’ R F2 R F’) 2x2x3 +EO (7/36)
(U F2 U’ L’ U2 L) F2L-1 (6/36)
(U2 R U R’ U R U’ R’) F2L (8/36)
( F R’ F’ Rw U R U’ Rw’ U’) LL (9/36)

Final solution: U Rw U R’ U’ Rw’ F R F’ R U R’ U’ R U’ R’ U2 L’ U2 L U F2 U’ F R’ F2 R’ U R’ F D F’ L U L B’

Couldn't find an insertion in time, someone want to find one for me?

 

[Kit Clement]

My first actually decent FMC attempt

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

Spoiler

Inverse: B2 F2 L2 B2 F2 D2 R U2 R’ U2 R B L R’ D’ F’ L’ U’ L’ R’
(B L’ U’ L’ F D’) 2x2x2 (6/36)
(F’ R U’ R F2 R F’) 2x2x3 +EO (7/36)
(U F2 U’ L’ U2 L) F2L-1 (6/36)
(U2 R U R’ U R U’ R’) F2L (8/36)
( F R’ F’ Rw U R U’ Rw’ U’) LL (9/36)

Final solution: U Rw U R’ U’ Rw’ F R F’ R U R’ U’ R U’ R’ U2 L’ U2 L U F2 U’ F R’ F2 R’ U R’ F D F’ L U L B’

Couldn't find an insertion in time, someone want to find one for me?

Insertion finder can: http://mf.qiyuuu.com/cube/if/473247fd4429d1e6fb760064ae2c6bf0.cube

 

[RhysC]

Insertion finder can: http://mf.qiyuuu.com/cube/if/473247fd4429d1e6fb760064ae2c6bf0.cube

It isn't working???


Don't tell me that skeleton ain't working.

 

[irontwig]

https://www.speedsolving.com/forum/...e-FMC-thread&p=1154152&viewfull=1#post1154152

 

[RhysC]

https://www.speedsolving.com/forum/...e-FMC-thread&p=1154152&viewfull=1#post1154152

Cheers. Bit of an odd issue eh?

 

[irontwig]

Cheers. Bit of an odd issue eh?

That you've grown up with the Internet, but can't use a keyboard?

 

[guysensei1]

That you've grown up with the Internet, but can't use a keyboard?

What's the 'wrong apostrophe' used for?

 

[RhysC]

That you've grown up with the Internet, but can't use a keyboard?

Lolwut, it's MS Word's problem, not mine

''''''''
^
|
Thar you go

 

[porkynator]

What's the 'wrong apostrophe' used for?

I had the same problem with wordpress, it turned ' into ’ automatically, apparently just because it looks better.

 

[Cale S]

kind of cool thing I did for current Weekly FMC

Spoiler

U R U // square
(F2 R F D' L2) // xcross + 2 free pairs
(R D' R' F' D F) // F2L - 1
(B D2 B') F' R' D' R D F // to L3C

skeleton: U R @ U F' R' D' R D F B D2 B' F' D' F R D R' L2 D F' R' F2
@ = [R' U2 R, D2]
U' R D2 R' U2 R D2 U F' R' D' R D F B D2 B' F' D' F R D R' L2 D F' R' F2

but w8 m8 there's a B D2 B' F' D' F which is the same as F' D F B D2 B', so we can replace it and cancel 3 moves

Final solution: U' R D2 R' U2 R D2 U F' R' D' R D2 F B D2 B' R D R' L2 D F' R' F2 (25)

rolls my avg25 to 25.33

 

[coldsun0630]

16 HTM from Korean cube community. (Jeong Jae-hyun)

Scramble: F2 R2 L2 B' L B2 L F2 U R2 B2 L2 B' R2 F' R2 B2 R2 U2 R
Solution: R U' B D F2 B' U' B U2 L' U L U F U2 D (16)

Spoiler

(Normal) 122: R (1/1)
(Inverse) insertion: D' (1/2)
(Normal) 2x2x2: U' D F2 (3/5)
(Inverse) 2x2x2: F' (1/6)
(Normal) 2x2x3+cross: D' B D (3/9)
(Inverse) 1x2x2+pair: F U2 F' U' L' U' L (5/14)
(Inverse) AB3C: U2 B' U B (4/18)

Skeleton: R U' D [1] F2 D' B D B' U' B U2 L' U L U F U2 D
[1]: D' B D F2 D' B' D F2 (-2/16)

Could this be an UWR? Well, I think the scramble is too short.(20 moves)

/

Edit: Cube explorer splits the same optimal solution.(but I don't think he cheated.)

 

[Bubtore]

Linus once had 15 on a scramble posted by someone on the german forum (L3C in 12 moves if I remember well).

 

[coldsun0630]

Linus once had 15 on a scramble posted by someone on the german forum (L3C in 12 moves if I remember well).

Wow, that's very impressive! Can I see the solution?

/

Edit: I searched his post until January 2014, but couldn't find it. I think I missed it somewhere.

 

[EMI]

Tied my single PB. Much luck involved, obviously.

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

Orient some edges: R'
Switch, EO: B2 D' @ R
2x2x2: B2 F' D2 R2
F2L-1: U' D2 F' U
AB3C: D B D' B' D2

@ = D L D' R D L' D' R'

Solution: R' D2 B D B' D' U' F D2 U R2 D2 F B2 D L D' R' D L' B2 (21)

 

[mycube]

Linus once had 15 on a scramble posted by someone on the german forum (L3C in 12 moves if I remember well).

Wow I completely forgot about that. You know my solutions better than I do

Wow, that's very impressive! Can I see the solution?

/

Edit: I searched his post until January 2014, but couldn't find it. I think I missed it somewhere.

Here you go:
http://speedcube.de/forum/showthread.php?tid=5768&pid=198034#pid198034

It's in the German forum, so maybe you just searched hear or maybe missed it

Edit: Besides this could be UWR (I am pretty sure other people had shorter solutions for other scrambles): I think you can't really have an UWR for FMC single because it depends sooo much on the scramble. I think there also could be a sub10 with an easy scramble, but more important are means or bigger averages