[Help Thread] FMC Discussion

[hagner]

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

Spoiler

L2 // 2x2x2
D2 B D2 // 1st 2x2x1
R2 // another 2x2x1
B2 D' B2 R2 // reassemble 1st 2x2x1
B2 D' // F2L-1
R F' R F R' F' R' F' // F2L
D R D' R' D' F2 U2 F' D F U2 F2 // T-case and a perm

pb 31 but I won't count it cuz the scramble was on an easy scramble thread

https://www.speedsolving.com/forum/threads/easy-fmc-scramble.3052/

 

[porkynator]

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

I've found this skeleton very quickly:

L2 //2x2x2 (1/1)
B' R2 B' D2 U' B' U //F2L-1 (7/8)

Then insertion finder finishes in 21

 

[BQ]

Does anyone has good solution on this start? It's the scramble of Xuchang Open 2017.

Spoiler

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

I started like this:
D' R2 L' D' B' //222
R2 F' R' F2 //223+112*3

What I did with it was:
R' U B' R2 B R' U R U //L4C
It result in 28 moves.

 

[mDiPalma]

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

HARCS "hacks" finds this linear 23-mover without insertions in 6 seconds...

y' x' // inspection
R' L U' F2 L2 F' R' D' F // 3x2x2 (9)
F R' F2 U F // eo (5-1=4)
U2 R U R U R2 U R2 U R' // f2l (10)

Spoiler: picture

 

[sqAree]

Does anyone has good solution on this start? It's the scramble of Xuchang Open 2017.

Spoiler

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

I started like this:
D' R2 L' D' B' //222
R2 F' R' F2 //223+112*3

What I did with it was:
R' U B' R2 B R' U R U //L4C
It result in 28 moves.

Insert [U' R' U, L] at the end to get to two twisted in 21. Then IF somehow cancels 8 moves with a 13-mover that I don't know at all, resulting in a 26 moves solution.
Doesn't really seem findable by a human imo.

 

[BQ]

Insert [U' R' U, L] at the end to get to two twisted in 21. Then IF somehow cancels 8 moves with a 13-mover that I don't know at all, resulting in a 26 moves solution.
Doesn't really seem findable by a human imo.

hmmm. If I noticed this insertion and had much time left, I might try this.

 

[BQ]

HARCS "hacks" finds this linear 23-mover without insertions in 6 seconds...

y' x' // inspection
R' L U' F2 L2 F' R' D' F // 3x2x2 (9)
F R' F2 U F // eo (5-1=4)
U2 R U R U R2 U R2 U R' // f2l (10)

Spoiler: picture

You aren't a human IMO.

 

[guysensei1]

Does anyone has good solution on this start? It's the scramble of Xuchang Open 2017.

Spoiler

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

I started like this:
D' R2 L' D' B' //222
R2 F' R' F2 //223+112*3

What I did with it was:
R' U B' R2 B R' U R U //L4C
It result in 28 moves.

Using your start...

Spoiler

D' @ R2 L' D' * B' //222
R2 F' R' F2 //223+112*3
U R2 B U2 B2 R2 B//solve 2 pairs
B' R' U' R U B U'//leaves 2-2 swap of edges

*= L F2 L2 F2 L2 F2 L for 27

but IF says that the optimal insertion is at @= F2 D B2 L2 F2 U B2 R2, but I don't know this alg

 

[BQ]

Using your start...

Spoiler

D' @ R2 L' D' * B' //222
R2 F' R' F2 //223+112*3
U R2 B U2 B2 R2 B//solve 2 pairs
B' R' U' R U B U'//leaves 2-2 swap of edges

*= L F2 L2 F2 L2 F2 L for 27

but IF says that the optimal insertion is at @= F2 D B2 L2 F2 U B2 R2, but I don't know this alg

That's not a common alg. If uses a lot of alg searched from CE.

 

[guysensei1]

That's not a common alg. If uses a lot of alg searched from CE.

I see. Well, 27 is a good solution too

 

[Cale S]

Using your start...

Spoiler

D' @ R2 L' D' * B' //222
R2 F' R' F2 //223+112*3
U R2 B U2 B2 R2 B//solve 2 pairs
B' R' U' R U B U'//leaves 2-2 swap of edges

*= L F2 L2 F2 L2 F2 L for 27

but IF says that the optimal insertion is at @= F2 D B2 L2 F2 U B2 R2, but I don't know this alg

That alg is a variation of (R2 U r2 F2)2

 

[williamwhizz]

Dadams weekly, 27

Spoiler

L2 B2 L' U2 // pseudo 2x2x2 (4/4)
L D' B' // pseudo 2x2x3 (3/7)
(L2 F' U L' U L) // F2L-1 (6/13)
F2 R' F' R // F2L (4/17)
R F R' F R F2 R' F2 // sune to 3E (8-1/25-1)
Skeleton : L2 B2 L' U2 L ^ D' B' F2 R' F' R2 F R' F R F2 R' F2 L' U' L U' F L2 (24)
^ : L' U2 L B' F U' R2 U B F' cancels 7 woaj
Final: L2 B F U' R2 U B F' D' B' F2 R' F' R2 F R' F R F2 R' F2 L' U' L U' F L2

 

[guysensei1]

Does anyone has good solution on this start? It's the scramble of Xuchang Open 2017.

Spoiler

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

I started like this:
D' R2 L' D' B' //222
R2 F' R' F2 //223+112*3

What I did with it was:
R' U B' R2 B R' U R U //L4C
It result in 28 moves.

Something better I found

Spoiler

D' R2 L' D' B' //222
R2 F' R' F2 //223+112*3
U F R F' R2//Pseudo F2L-1
(U' R)//F2L
(R B U' B' U B U2 B' U' R' U)//LL

1 move cancels giving 26

 

[Bubtore]

First two solves of Swisscubing FMC 2017 : 24 -24

S1 // R' U' F R' B2 R2 F2 D2 R' F2 U2 R' B2 R D' U2 F' R' D' B R2 B R' U' F

(L F L') // 122
(R' B2 U2 B) // EO
(F2 L B2 D2 L2) // 223
(F2 U' F' U' F U F) // L3C

Skel // F' U' F' U F U F2 L2 D2 B2 L' F2 B' U2 * B2 R L F' L' - 19
* U2 F D' F' U2 F D F'

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

S2 // R' U' F U2 B2 D B2 U F2 R2 D2 B2 L' D F L U B' U2 F' U' B' F R' U' F

R' (R2 D2 R) // EO
(F2 U) // P222
U2 D' F2 B' D' B R2 // 223
F2 U' // PF2L-1
D2 F D' F' D F D F' U // L3C

Skel // R' U2 D' F2 B' D' B R2 F2 U' D2 * F D' F' D F D F R' D2 R2 - 21
* D' B' D F D' B D F'

Solution // R' U2 D' F2 B' D' B R2 F2 U' D B' D F D' B F' D F D F R' D2 R2 - 24 Moves

 

[Mieeetek4]

Scramble: D2 B D2 R2 L F U' R' U' R F2 D' F2 L2 D' F2 R2 L2 D2
D R2 L2 U2 B F2//222+PREMOVE
(L F)//223
(F L F2 D2 F)//EO+BLOCKS
I found this 12 move start but I only found a 19 move skeleton leaving 2C2E and 21 moves to 4C or 5C. I'm sure there must be something better but I can't find it. How would you finish this skeleton?

 

[guysensei1]

2 26s with LL algorithms

1. D2 B2 R' B2 L2 D2 U2 L' R' B2 D2 F U' L' B L2 B' D B2 L' R'

Spoiler

U' L' B' U2 D' B'//2x2x2 (6/6)
F B L B' U L2//pseudo F2L-1 (6-2/12-2)
(L U' D)//correct pseudo (3/13)
F' L' F2 L F' D//pseudo F2L (6/19)
F' D' F U F' L' F' L F U' D//LL (11-4/30-4)

Final: U' L' B' U2 D' F L B' U L2 F' L' F2 L F' D F' D' F U F' L' F' L F L' (26)

2. R2 B2 D2 R2 U' F2 L2 U F2 L2 R2 F' U' B R' B D' R B U' L2

Spoiler

L2//pairs (1/1)
(F2 U' B2 U B')//2x2x2, preserve pair (5/6)
(F2 D' L F D)//pseudo F2L-1 (5/11)
D' L' F2 L F L'//F2L (6/17)
L' F' U' F U L//EO (6-1/23-1)
F' D' F2 D F D' F D//antisune (8-4/30-4)

Final: L2 D' L' F2 L F L2 F' U' F U L F' D' F2 D F D' L' D F2 B U' B2 U F2 (26)

 

[ChrisCuber123]

Does anyone has good solution on this start? It's the scramble of Xuchang Open 2017.

Spoiler

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

I started like this:
D' R2 L' D' B' //222
R2 F' R' F2 //223+112*3

What I did with it was:
R' U B' R2 B R' U R U //L4C
It result in 28 moves.

late response, but i found this 29 in a few minutes:
D' R2 L' D' B' //222
R2 F' R' F2 //223+112*3
U2 R2 U' R2 F' U F U2 B' R B R' // lol F2L
L U2 L' U' L U' L' U2 // more lol

 

[guysensei1]

FMC 25 move winning solution for Malaysia Cube Open and Singaporean NR single!

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

Spoiler

(L D' B' U2)//222, L B' U2 would have worked but found nothing so i added a D' (4/4)
(R2 D B D2)//223 (4/8)
(R' B2 R D' R D B2)//all but 5 edges (7/15)

Skeleton: B2 D' R' D R' * B2 R
** D2 B' D' R2 U2 B D L'

*=U D' R2 U' D B2
**=D2 B' R L' D2 R' L B' D2

Final: B2 D' R' D R' U D' R2 U' D R D2 B' R L' D2 R' L B2 D' R2 U2 B D L' (25)

Some comments:

Spoiler

This is probably the biggest risk I've taken in terms of choosing skeletons.
I had found a 24 to L3C within the first 10 minutes, so i tried to look for other options and found the L5E with 30 mins left.
I figured I should try to look through this skeleton with stickers to briefly see if I can find a 6 move comm that cancelled something. And luckily I did.

Also the U perm I inserted+the cancellations is just the 6 move comm lol.

Also I wonder if theres a simple setup to a 5-cycle somewhere, didnt really check for that as I was on low on time.

 

[TheDubDubJr]

Here are my solutions to my FMC WR Mean from FMC Americas 2017!

22, 23, 27 = 24.00

Spoiler: Attempt #1 - 22

Scramble: R' U' F R2 D' B2 F2 R2 D' U2 F2 U' L2 B D2 B' L' B' L2 D' U L2 B' U2 R' U' F
Inverse: F' U R U2 B L2 U' D L2 B L B D2 B' L2 U F2 U2 D R2 F2 B2 D R2 F' U R

start on inverse:
(R2 D' F) // EO (3/3)
(R' B2) // 2x2x1 (2/5)
(F2 D R2 D R') // Pseudo F2L-1 (5/10)
switch
L // F2L-1 (1/11)
B' // pair (1/12)
L D' L' D2 L D L' D' B D2 // LL skip (forced) (10/22)

Solution: L B' L D' L' D2 L D L' D' B D2 R D' R2 D' F2 B2 R F' D R2 // 22

I originally found the easy 18 to L3C after switching with L2 D' L' D2 L D L' D but optimal was a 23. After finding the 23 I went back to the F2L-1 and found the skip.

Spoiler: Attempt #2 - 23

Scramble: R' U' F R2 D2 U B2 D F2 U' B' L' F' L' U2 B' D' L2 B F D2 U R' U' F
Inverse: F' U R U' D2 F' B' L2 D B U2 L F L B U F2 D' B2 U' D2 R2 F' U R

start on normal:
R U' F' // EO (3/3)
D2 R2 // 2x2x1 + 3 pairs (2/5)
switch
(D) // pair (1/6)
(R2 D' R) // 3x2x1 plus RB edge (3/9)
switch
U' L' D // 2x2x3 (3/12)
F2 R U' R' U2 // 17 to L3C (5/17)

skeleton: R U' F' D2 R2 U' L' D F2 R U' R' U2 R' D R2 D' (D B2 D' F D B2 D' F') // cancels 2

Solution: R U' F' D2 R2 U' L' D F2 R U' R' U2 R' D R2 B2 D' F D B2 D' F' // 23

Optimal insertion
The only other skeleton I found on the attempt was a 17 to L5C which optimal was 28. I spent most of my time looking at the start that I had because the EO 2x2x1 made a lot of really nice pairs and I just had to put them somewhere nice.

Spoiler: Attempt #3 - 27

Scramble: R' U' F R2 D2 R2 U B2 F2 L2 F2 U F U2 R F' L2 R' U R D2 B R' U' F
Inverse: F' U R B' D2 R' U' R L2 F R' U2 F' U' F2 L2 F2 B2 U' R2 D2 R2 F' U R

start on normal:
F2 U2 R' F L2 // 2x2x2 (5/5)
switch
(R' U' B2) // Pseudo 2x2x3 (3/8)
switch
B2 // solve 2x2x3 (1/9)
switch
(F' U' F2 R F') // EO + set up edges [F' U' F solved EO] (5/14)
(U2 R2 U2 R) // 18 to L4C (4/18)

skeleton: F2 U2 R' F L2 B2 @ R' U2 R2 U2 F R' F2 U F B2 U R
@ = U' L' U R' U' & L U R // cancels 3
& = U R D R' U' R D' R' // cancels 4

Solution: F2 U2 R' F L2 B2 U' L' U D R' U' R D' R' L U' R2 U2 F R' F2 U F B2 U R // 27

Optimal on the 18 to L4C is 27! I found about 5 first insertions that canceled 3 and I spent the rest of my remaining time searching through those to possibly find one that cancelled 5 or more.

One big thing that I missed, after finding the 27 on the 18 to L4C I didn't really remember that I had other skeletons that I wrote down and could try, so thats why I kept looking for nested insertions.

I did find this though:
start on normal:
D2 B R' L U' // EO (5/5)
L F2 // 2 2x2x1s (2/7)
R B' // 2x2x3 (2/9)
switch
(D) // 2 pairs (1/10)
switch
D' L' D' L2 D L' // 16 to L3C + L3E (6/16)

These were the optimal insertions:
skeleton: D2 B R' L U' L F2 @ R B' D' L' D' L2 D L' D'
@ = F' B L2 B' & F U2 // cancels 1
& = B L2 B' R2 B L2 B' R2 // cancels 6

D2 B R' L U' L F R2 B L2 B' R2 F U2 R B' D' L' D' L2 D L' D' // 23
All together it would have been a 22.67 mean.

Even though I missed that 23 I am still really happy I finally got FMC WR Mean.

 

[guysensei1]

Here are my solutions to my FMC WR Mean from FMC Americas 2017!

The last one should say attempt #3 in the spoiler.

Congrats on the mean! The first two solves were amazing. Too bad about the last one, that would have been a legendary mean had you tried the 3C3E

Fmc WRs and 4x4 WRs are interestingly similar now.