[Help Thread] FMC Discussion

Ickenicke said:
I am having a question: Have anyone tried FMC at bigger cubes like 4x4? IF someone have, how good results is possible?
Click to expand...

We had this as a regular event in the weekly competition for a while; if I remember correctly, the best results were a little less than 80 moves, and I think I remember having an 85 once. I averaged around 100.
 
yeah, got a 31 moves solution PB on the weekly competition 2012 (1)
scramble: U2 R2 D R2 F2 U B2 R2 U R2 B' U' L2 F D' L' F2 D' R2 B2 R'
solution: F’ R2 U R’ U’ L2 R’ U’ R2 B2 R’ L’ F U’ F’ L’ U’ L2 F’ L’ F L2 U L B2 D’ B’ D B’ U’ L’
explanation:
2x2x2: F’ R2 U R’ (4)
2x2x3: U’ L2 R’ U’ R2 B2 R’ (7)
F2L-1: L’ F U’ F’ L’ U’ (6)
Finish F2L: L2 F’ L’ F L2 U L U (7)
OLL: U’ B2 D’ B’ D B’ U’ (6)
PLL: L’ (1)
U’ U becomes nothing, cancel 2 moves
 
New PB: 24 HTM

Repost from todays example solve thread:

Yuxuibbs said:
NEXT: F2 D2 F2 D B2 U F2 R2 B2 U2 B2 L U' F L F L B' D L'
Click to expand...

Dedicated to Daniel Sheppard who showed me the final alg some weeks ago :)

F' U' D' L' - 2x2x2
R' D R B D2 B2- siamese
R B' R' B - F2L-1
F' R' F R D R - now we're just a D' move away from two flipped edges and three twisted corners
R' D' R2 F' R' F2 D' F' D - THX Daniel :)

with cancellations:
F' U' D' L' R' D R B D2 B2 R B' R' B F' R' F R' F' R' F2 D' F' D = 24 HTM PB :)
 
Is there a written guide on how to get better at FMC? Could somebody link me to it?

Here is an example on how much I suck at FMC.


emolover said:
Scramble: D2 U R2 U L' D2 F2 D' F' L D2 F R D F D2 L2 U' B2 D' L U2 D' R' D

M U L2 B U z2// 2x2x2 (5)

R U' R' U2 F2// 2x2x3 Sorta (10)
y' U2 F2 L' U2 L U' L' U L R U' R' U' R U2 R' U R// F2L (27)
E' L' U' L U L F' L' f//OLL (37)
y R U2 R' U2 l U' l' U' R U l U R2//PLL (50)

U' R U R' U F2 U2 F//2x2x3 (13)
L2 y' L' U2 L2 F' L' F U R U2 R U F' U' F// F2L (28)
y' F' L' U' L U L' U' L U F// OLL (38)
(y2) F2 U M' U2 M U F2// PLL (47)

Yes I actually know that last PLL.

Next scramble: U2 D F2 B' D R2 F2 D2 U2 F U2 L' R U2 F' B' D F2 L2 F' L2 F2 B2 U D2
Click to expand...
 
emolover said:
Is there a written guide on how to get better at FMC? Could somebody link me to it?

Here is an example on how much I suck at FMC.
Click to expand...

Wiki has info and links to more detailled info
In general; blockbuild until you have some corners or edges left, stay away from OLL / PLL unless you can use a short OLL to skip PLL or leave some corners or edges that you can insert.
 
Just some random FMC solves I did.

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

B' F2 L2 F'L'
D' L D' L'D' R'
D R' D R D'F D2 F L D'L' F'
D F'D'F
R' B' D' B R F L B D B' L' F' D2

40 moves

Scramble: R F2 U F' U' R' B U B F' R' L2 D R' B' R D' R2 L2 U F' D U R' B

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

43 moves

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

D' F' D2
F2 u F2 u' F2
R' U F R F' R' F R F'
U R' U' R' F R2 B' R' B R2 F'
D' F D' B2 D F' D' B2 D2

37 moves,fine start with bad ending.

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

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

42 moves

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

B L2 D R U'
L' B D' B D L2 B
D' L2 B' L B2 D' B' D2 L2
D L D' L' D L
R' D R'u' R' B' R2 D' R' D R' B R B D2

42 moves,V perm :(

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

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

45 moves

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

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

34 moves ;)

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

R B' U2 L B' L' D2 L B' L
B' R B
U2 F' U F U B U B'
U' R2 U R2 U R2 U2
R U' R U' R' d R' U R B

38 moves

Another 37 moves solution I found

R B' U2 L B' L' D2 L B' L
U2 R' U' R2
U2 R' B R U R' U' B' U
F R F' U' F R F' R' F' U F2 R' F' R

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

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

37 moves

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


U' L D' R U2 B' R B R' L2
U' L F' L'
U2 R U R'
U L' U2 L2 F' L
F' R2 F L2 F' R2 F2 U

32 moves

Some starts I got but couldn't capitalize on them

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

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

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

L2 D'R U' F' U L' R
 
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Yeah, I got a 27 moves solution PB on weekly competition 2012-02
Scramble: R2 B' U2 B' F2 D2 R2 B D2 R2 F' R' D' U R U R2 F' D L' F
Solution: L F L’ U’ L2 D’ F2 L2 F’ L z2 x’ U F’ R U R’ U R U R’ y’ R’ U’ R’ F R F’ U R2
2x2x3: L F L’ U’ L2 D’ F2 L2 F’ L (10)
Pseudo F2L: z2 x’ U F’ R U R’ U R U R’ (9)
OLL: y’ R’ U’ R’ F R F’ U R (8)
Align pseudo: R (1)
R R becomes R2, cancel 1 move
I only spend around 20 minutes to find this solution.
 
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I found a better solution, for weekly comp. 2012-02.
22 HTM, 18 STM moves, about 90 minutes. :)
Scramble: R2 B' U2 B' F2 D2 R2 B D2 R2 F' R' D' U R U R2 F' D L' F
Solution: F2 U B F L F’ B U’ L B F’ D’ L B F’ D’ F B’ L U2 B’ L2
Explanation:
F2 U B F L Guimond first step, and 3 edges,
F’ B U’ L B F’ D’ L (U2) more 3 edges,
(U2) B F’ D’ F B’ L U2 B’ L2 L6E.
 
guusrs said:
Wonderful 21 move solution from Tomoaki Okayama on last weeks FMC competition on Per's site (http://fmc.mustcube.net/results.php).
Congratz Tomoaki !

btw: more competitors one this weekly competition would be welcome. It als includes a unlimited-time competition and a 10-min-linear competition!
Click to expand...


Tomoaki's solution feels like magic to me. How did he come up with those pre-moves? They don't look like a perfect start. Is Tomoaki giving any advanced lessons? I subscribe!
Notice, he won by 6 moves (27 HTM was the second and third place).

Attila said:
I found a better solution, for weekly comp. 2012-02.
22 HTM, 18 STM moves, about 90 minutes. :)
Scramble: R2 B' U2 B' F2 D2 R2 B D2 R2 F' R' D' U R U R2 F' D L' F
Solution: F2 U B F L F’ B U’ L B F’ D’ L B F’ D’ F B’ L U2 B’ L2
Explanation:
F2 U B F L Guimond first step, and 3 edges,
F’ B U’ L B F’ D’ L (U2) more 3 edges,
(U2) B F’ D’ F B’ L U2 B’ L2 L6E.
Click to expand...


Great! It's nice to see other close optimal (or optimal?) solutions than simple block building.
Congratz Attila!
 
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Mirek said:
Tomoaki's solution feels like magic to me. How did he come up with those pre-moves?
Click to expand...

I was actually amazed at the simplicity :)
Start on the normal scramble: B U L D B F is a pseudo 2x2x2 + two pairs
Upon switching to the inverse scramble this requires another premove F
From there everyting just falls into place

But talking about magic: I just don't get Atilla's solve...
I can see the Corner orientation + 3 edges but from there it is all hocus pocus :)
 
Mirek said:
guusrs said:
Wonderful 21 move solution from Tomoaki Okayama on last weeks FMC competition on Per's site (http://fmc.mustcube.net/results.php).
Congratz Tomoaki !

btw: more competitors on this weekly competition would be welcome. It als includes a unlimited-time competition and a 10-min-linear competition!
Click to expand...
Tomoaki's solution feels like magic to me. How did he come up with those pre-moves? They don't look like a perfect start. Is Tomoaki giving any advanced lessons? I subscribe!
Notice, he won by 6 moves (27 HTM was the second and third place).
Click to expand...
Thanks Guus, I found that solution in Shinkansen to go to Kansai New Year 2012. :)

Hi, Mirek. As cubenovice analyzed, that premoves were found by using NISS.

Firstly I tried to solve the normal scramble with premove U':

c/e pair: B
2x2x2 block: U L D F

Then switch to inverse:

2x2x2 block: U
More square: R (wow!)

Then B makes pseudo 2x2x3 block (accordingly add B2 to premoves).
I did much trial and error after that, but no good continuation was found.

On a whim, I added F' to premoves. Then I found:

Pre-scramble: F2 B2 D' L' U' B'

1st square: U
2nd square: R
Expand block: D2
2x2x3 block: B2 R' F
F2L minus 1 slot: B'
All but 3 corners: D' B' D2 B (wow!)
Correction: F2 B2 D' L' U' B'

This skeleton is not convenient to write a insertion, so I slightly modified the skeleton (and premoves) in the posted one.

As I've mentioned here, it's a real pain to write my whole thinking way to find the solution every time. But if requested I do, like that time and this time.

Hope this helps.
 
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