[Help Thread] FMC Discussion

1. U2 F L2 D2 R2 B2 L2 B D2 L' F' U' L' D R B' D2 B'
alg.garron
D2 F' ^ * F' L2 D B' L U' // 2x2x2 [7]
z2 y R2 U R2 F R' F' // 3x-cross on green [6/13]
U2 R U' R' U R' U' // WV on green [7/20]
R2 // ARF [1/21]
Insert (F U2 F' D F U2 F' D') at ^ to cycle corners
Insert (L2) at * to form 2x2x3

Final solution: D2 U2 F' D F U2 F' D' L2 F' L2 D B' L U' B2 D B2 L B' L' D2 B D' B' D B' D' B2 [29f]
Time: 37:56

2. D U2 R2 D' B2 F2 R2 U' B2 U R' F' D2 B U B R D2 L' F
alg.garron
D F' B' D2 R D' B' U' D R' L' // 3x-cross [11]
L' U' L U' L' U L // 4th pair [7-1 = 6/17]
R' F' U' F U R // ELL [6/23]
R' F' L' F R F' L F // CLL [8-2 = 6/29]
U // AUF [1/30]

Final solution: D F' B' D2 R D' B' U' D R' L2 U' L U' L' U L R' F' U' F U F' L' F R F' L F U [30f]
Time: 12:06
This one was way too easy. I don't even wanna optimize from here.
 
I'm sure somebody could find a better solution

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

On inverse
U' D' L2 // 2x2x2 (3/3)
U' F2 U2 R U R U F // F2L-1 (8/11)
U F' L * F L' // 4th pair (5/16)

Insert at *: L B2 L' F L B2 L' F'
 
I wanna know if you guys can help me, My goal is to get more sub 40 moves solves with roux(so far ive only gotten 1).
Whats something i should look for, learn,etc?
 
Look for cancellations with CMLL and solve the blocks at the same time. Try using different cmlls to make LSE shorter. Try inserting algs... If you post a scramble i can show you how I'd do it, I'm not a FMC guy but yeh i can get sub-40 easily...

You can also do NISS but I don't think it looks pretty so I don't use it. I've gotten lots of 31s and a 30 without it tho.
 
Last edited:
PandaCuber said:
I wanna know if you guys can help me, My goal is to get more sub 40 moves solves with roux(so far ive only gotten 1).
Whats something i should look for, learn,etc?
Click to expand...

First a question: Do you want to reduce movecount in speedsolves or specifically FMC?
For the latter you typically should not limit yourself to a fixed method (altough in general blockbuilding works best)

But to stay in Roux; some usefull things could be
solve color neutral
Insertions A: single moves
Try inserting "random" moves into your blocks to check if they give better continuation in later steps:
Suppose you have a made an optimal 1x2x3 block in 6 moves but 2nd block looks nasty
In these 6 moves you can check (typically from the back) if there is a place where you can insert a face turn without affecting any block-pieces.
Now make your block with this face in all three remaining positions and check the result.
With a little luck you may find a drastic improvement for your 2nd block.
You can do the same at the 2nd block
Experiment with different algs at the CMLL stage; you can even try (short) algs of which you know they will not even fully solve the case.
If you just solve one corner and have a good result on edges you may be better off than with all corners solved and lousy edges.
Insertions B: cycles
If you have one corner oriented correctly after the 2nd block you could AUF to put it in the right pot and check if the remaining three are a 3-cycle.
If so you can solve them (temporary) with a comm and then check for a better insertion later.
Same when your solve ends on an edge 3-cycle: check your solution for possible insertions of the cycle.
NISS
Make sure to look up the FMC wiki page: it has links to some good threads with FMC info
 
PandaCuber said:
Both. But I just want to be more efficient in general.
Click to expand...

OK:)

Having a peek at your sub 40, I hope you don't mind a little analysis:

PandaCuber said:
x'z'MBM2DLU2
xU'r'U'r2U2RU'r2URU'R'
U'R2DR'U2RD'R'U2R'
M'UMUM'U'M'U'M2U'r2U2M'U2M
=39
Click to expand...


Ehm, I count 43 moves in STM, 52 in HTM

If you use spaces in between move ypour solutions are better to read/count:
x'z'M B M2 D L U2
x U' r' U' r2 U2 R U' r2 U R U' R' +
U' R2 D R' U2 R D' R' U2 R' #
M' U M U M' U' M' U' M2 U' r2 U2 M' U2 M

Nice 1st block
While building the 2nd block I see lots and lots of blocks not being used.
In FMC you need to seize thos blocks
But sticking to Roux...
You are forgiven for not spotting the opportunity at +
But # you should have spotted
Check out U2 B2 at + - leaves 3E 3C
Check out U' B2 at # - leaves just three edges!

Insertion finder said
39 HTM for +
34 HTM for #

BTW insertion finder cannot solve your notation.
I had to manually rewrite the solution for IF to work

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


B' F L B2 F2 D B U2
L' B' U' B2 D2 F D' B2 U F U' +
U' F2 D F' U2 F D' F' U2 F' #


#
B' F L B2 F2 D B U2 L' B' U' [@1] B2 D2 F D' B2 U F U' F' U' F2 D F' U2 F D' F' U2 F' U' B2
Insert at @1: U F R' F' U' B' D' R D B
Fewest moves: 39. 3 moves cancelled
The final solution: B' F L B2 F2 D B U2 L' B' F R' F' U' B' D' R D B' D2 F D' B2 U F U' F' U' F2 D F' U2 F D' F' U2 F' U' B2


+
B' [@1] F L B2 F2 D B U2 L' B' U' B2 D2 F D' B2 U F U' F' U2 B2
Insert at @1: B' D L' D' F' B R D R' F
After the 1st insertion: B2 D L' D' B [@2] F' R D R' F2 L B2 F2 D B U2 L' B' U' B2 D2 F D' B2 U F U' F' U2 B2
Insert at @2: L' F' R F L F' R' F
Fewest moves: 34. 6 moves cancelled
The final solution: B2 D L' D' B L' F' R F L F' D R' F2 L B2 F2 D B U2 L' B' U' B2 D2 F D' B2 U F U' F' U2 B2
 
PandaCuber said:
I wanna know if you guys can help me, My goal is to get more sub 40 moves solves with roux(so far ive only gotten 1).
Whats something i should look for, learn,etc?
Click to expand...
I think, for L6E cases you should use not only M and U moves, because it gives too much HTM moves.
( However, this is not Roux method.)
For example, your solution: (example solve game #2354 )
U2 M U MU' M'U2 M' U M2 U u2M' u2 M' 22 HTM.
My tips:
U M2 U’ B2 U M’ U’ B2 M2 U2 M’ 15 HTM.
or: L R2 D’ R F’ L’ R U L R2 D L D2 13 HTM.
 
Last edited:
@5BLD, R L B' D' L2 U B2 L D R2 F' D2 R2 B2 D2 R2 B R2
Click to expand...
z.rF'UR2Er (insert R move )F'
but i realised its better off without any.

r2U'M2U'r'U2r'U'R -- someone who knows a lot about LL can finish this nicely but since i dont...

r2U'M2U'R'U2R'U' R or r -cancels with either L' or R' / to cancel two moves I want an alg which starts L'B or R'U/r'U/l'B

i know a cllef which could possibly cancel for this case: LFU'RU'R'U2RUR'UF'L'
another candidate is L' U2 R U' B' U2 B U R' U2 L mirror is R U2 L' U B U2 B' U' L U2 R'

dump R' U2 L U' F' U2 F U L' U2 (R or r) into it, it cancels 3 moves.
so thats
zrF'UR2ErF'
r2U'M2U'R'U2R'U'R
R'U2LU'F'U2FUL'U2R

zrF'UR2ErF' 7
r2U'M2U'R'U2R'UL 16
U'F'U2FUL'U2R 24

24 moves to LSE, or 16 moves to LL.

-
for real LSE you want to be using as much Rw as possible by the way.
 
Last edited:
Hi Cubenovice,

Something about insertion finder. As you said,

BTW insertion finder cannot solve your notation.
I had to manually rewrite the solution for IF to work
Click to expand...

The problem is that the IF considers the lowercase letter moves as the inner slice moves(see notation). You should use Rw instead of r (Uw instead of u and so on) then the IF will work perfectly.
 
Cubenovice said:
Ehm, I count 43 moves in STM, 52 in HTM
Click to expand...

WAHT? I counted wrong?...:fp
If you use spaces in between move ypour solutions are better to read/count:
x'z'M B M2 D L U2
x U' r' U' r2 U2 R U' r2 U R U' R' +
U' R2 D R' U2 R D' R' U2 R' #
M' U M U M' U' M' U' M2 U' r2 U2 M' U2 M

Nice 1st block
While building the 2nd block I see lots and lots of blocks not being used.
In FMC you need to seize thos blocks
But sticking to Roux...
You are forgiven for not spotting the opportunity at +
But # you should have spotted
Check out U2 B2 at + - leaves 3E 3C
Check out U' B2 at # - leaves just three edges!

Insertion finder said
39 HTM for +
34 HTM for #
Click to expand...

Im not understanding this + & #....
 
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