The Roux "Example Solve" Game!

[Renslay]

if there is an obvious solution for 1x2x2 then i will do it. But I use it mainly because you only have to find the DR edge into to start moving.

Ah, I see.

 

[GuRoux]

Ah, I see.

i know in cfop they say do your cross without thinking about it so you can lookahead to the next pair. but i have a hard time doing the first block while looking ahead to the second block. i don't know if it's just harder in roux or my lack of practice.

 

[goodatthis]

If someone wanted to do a Roux FMC, could they leave out CMLL and use an insertion later on?

 

[GuRoux]

If someone wanted to do a Roux FMC, could they leave out CMLL and use an insertion later on?

the problem with roux fmc is M is two moves.

 

[Renslay]

If someone wanted to do a Roux FMC, could they leave out CMLL and use an insertion later on?

Of course! Cannot see why not.

However, as GuRoux said, the problem is usually with the M moves - so during FMC it is more important to find a short LSE which leaves out some edges (usually 3 or 5), then dealing the edges through insertions. Here are a few examples:

example1
example2
example3

Note the parallel block building on both sides with non-matching colors (use pre-move if necessary), the short CMLL (controlled through the block building), and the exceptionally short LSE in the skeleton.

If you have a really bad CMLL case, you can deal with the corners through insertion, or you can alter your F2B (it is usually easy, since you have quite a good freedom during blockbuilding).
Also note that you can permute the corners with only 3(!) moves, which can lead to a sune or antisune case as CMLL.

EDIT:

Found an example where I skipped the CMLL and used insertion for corners:
example4

 

[Renslay]

Scramble of the session:
B2 L2 F R2 D2 U2 R2 F' D2 F L' F2 L' B' R' F R B' D U
alg.cubing.net

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Speedsolve / fast linear solve:

z
M U' R U R D' x' U' F2 (8)
U' r2 U2 R U' (r' R') U (M' r) U r' (12)
U2 R2 D' R U2 R' D R U2 R (10)
M U M' U' M U2 M' U M' U2 M2 U2 M' (13)
alg.cubing.net

43 STM. Pretty good solve.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

FMC-1:

z
M U' R2 D' // left square (5)
B U B // right square (3)
R2 U' B2 U2 x' // left block (4)
R U B' R B R' // right block -1 edge (6)
B L' B' L U L U' L' // CMLL (8)
U * M2 U2 # R' // all but 5 edges (5)
alg.cubing.net

Skeleton: 31 HTM.

* = F2 D2 B2 L B2 D2 F2 R (8-1)
# = U2 L2 B' L2 U2 R2 F' R2 (8-5)

Final solution:

z
M U' R2 D'
B U B
R2 U' B2 U2 x'
R U B' R B R'
B L' B' L U L U' L'
U F2 D2 B2 L B2 D2 F2 R'
x2 B' L2 U2 R2 F' R
alg.cubing.net

41 HTM.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

FMC-2, with some help from insertion finder:

z
M U' R2 * D' // left square (5)
B U B // right square (3)
R2 U' B2 U2 x' // left block (4)
R U B' R B R' # // right block (6)
B L' B' Lw U L U' Lw' // CMLL (8)
U' Rw2 R // all but 5 edges (3)
alg.cubing.net

Skeleton: 29 HTM.

* = B' D' U R D' R D U' B' D (10-6)
# = R L' D2 R' L B2 (6-3)

Final solution:

z
M U' R2
B' D' U R D' R D B
R2 U' B2 U2 x'
R U B' R B
L' D2 R' L B'
L' B' Lw U L U' Lw'
U' Rw2 R
alg.cubing.net

36 HTM.

 

[porkynator]

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

x' y
L2 U' B2 //Square
F' L2 U M2 U2 F U' //Block + square
L2 U R U2 R2 U' R U' R' U2 R //Blocks + CMLL
U M U' M' U2 M U' M2 U' Uw2 M' Uw2 M' //LSE

Tips for LSE?

 

[LarsN]

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

Speedsolve:
y2
U2 R2 B2 D' U' B (6)
Rw' U2 M' U2 B' R' B R' M U2 M' U2 Rw' U' Rw (15)
U L' U R U' L U R' (8)
M' U2 M' U2 M' U' M' M' U2 M' U2 (11)

40 STM
16.41s

I need to be more second block efficient ...

 

[pewpewrawr]

B2 L2 F R2 D2 U2 R2 F' D2 F L' F2 L' B' R' F R B' D U
x y2
U' B2 r2 U' F' r2 B2 //7
U2 R U r U R U R U R U R' U2 R U r' //16
U R' U r U2 R2 F R F' R //10
U' M' U' M2 U' M' U2 M' //8
41 stm

second block was ebin, rururururu.

 

[Renslay]

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

x' y
L2 U' B2 //Square
F' L2 U M2 U2 F U' //Block + square
L2 U R U2 R2 U' R U' R' U2 R //Blocks + CMLL
U M U' M' U2 M U' M2 U' Uw2 M' Uw2 M' //LSE

Tips for LSE?

U' M U M' U2 M U' M2 U' M' U2 M U2
or:
U M U2 M' U2 M' U M2 U M U2 M U'
Same length, but more comfortable for the last part.

Or if you do FMC, you can experiment with insertions (solve only a few edges during LSE).

 

[GuRoux]

first try speed solve
scramble: B2 L2 F R2 D2 U2 R2 F' D2 F L' F2 L' B' R' F R B' D U
time: 10.81
solution:
y' z'
r' u U r B2 R B' R' U R' U M F (13)
r2 U R' U2 r' U' R' U R U' R' U R (13)
U2 R U2 R2 F R F' U2 R' F R F' (12)
M U' M' U' M2 U' M' U2 M U M' U2 M2 U2 M' U2 M2 U2 (18)
stm: 56
tps: 5.12

 

[CheesecakeCuber]

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

Inspec: y2
FB: U2 R2 D' U M2 B (6)
SB: M U M2 U' R U2 r2 U M2 U2 R' U r (13)
CMLL: R' U r U2 R2' F R F' r (9)
LSE: U' M' U' M U M' U M U' M' U2 M' U M2 U' M2 U2 M2 (18)

46 stm

 

[h2f]

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

Inspec: y2
FB: U2 R2 D' U M2 B (6)
SB: M U M2 U' R U2 r2 U M2 U2 R' U r (13)
CMLL: R' U r U2 R2' F R F' r (9)
LSE: U' M' U' M U M' U M U' M' U2 M' U M2 U' M2 U2 M2 (18)

46 stm

There must be B' not B in FB

 

[Renslay]

Scramble of the session:
L2 D2 B2 D R2 D' F2 L2 B2 L2 D B' R D2 L U F L B R
alg.cubing.net

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Speedsolve / fast linear solve:

y2
R u2 M2 b' r' U r2 B (8)
r U' R' U2 R' U' r' U2 M2 U r (11)
U R' U2 l U' R U l' U R' U R (12)
U M' U M' U M U M U M' U2 M' U M2 U M2 U2 M2 (18)
alg.cubing.net

49 STM.

 

[Shah]

My solution

x
D' M2 D' U2 R' B' U' B
U R2 U' R U' R2 U r' U' R2 U' r' U' R2 U' M2 U r'
U F R' F' R U2 R U2 r'
U2 M' U2 M' U M U' M' U2 M' U' M U2 M' U2

50 STM

 

[LarsN]

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

Speedsolve
x
R' F2 U F' R' U2 B (7)
U' R' U R U' R' U R2 U' r U r' R' U R U R' U' r (19)
U L' U R U' L U R' (8)
U M2 U' M U' M' U' M' U2 M U' M2 U M U2 M' U2 (17)

54 STM
13.55s
Second block is my weakness...

 

[h2f]

My solution - far too long
y' x' D' R2 r2 B' R U R' r2 F //9
R' U' r2 U' r' U' R U R U' M U2 r U R'//15
U F' L F L' U2 L' U2 L
U M2 r' F R U M' U' R' F' R
U2 M2 U M E2 M' E2

51 stm

alg.cubing.net

I tried to find better solution of FB and SB and I made this:
y' x' D' M2 B' U' r' U' M' F' //8 FB
U M U' r2 U' M' r U r' U' M2 r' U' R//14 SB
U R U R' U R U L' U R' U' L U'//13 CMLL
M'UM'//3 EO
U2 M' U2 M//4
U M2 U2 M2//4

46stm.

alg.cubing.net

I think FB is ok (8 moves) but SB might be better I guess. Can someone give me any tips or advice for SB?

 

[Renslay]

Scramble of the session:
R U F B' L2 D2 L' B D2 B' D' B2 D' F2 U' L2 F2 L2 U B2 U2
alg.cubing.net

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Speedsolve / fast linear solve:

y2 x
U2 b B u' r B' r2 B (8)
R' U' B' R2 B M' U2 r' U r (10)
U R U' L' U R' U L U L' U L (12)
M' U M' U' M U M' U M' U2 M' U M2 U E2 M E2 M' (18)
alg.cubing.net

48 STM. Too long LSE... Any suggestions?

 

[cowabunga]

y2 x
U2 b B u' r B' r2 B (8)
R' U' B' R2 B M' U2 r' U r (10)
U R U' L' U R' U L U L' U L (12)
M' U M' U' M U M' U M' U2 M' U M2 U E2 M E2 M' (18)
alg.cubing.net

48 STM. Too long LSE... Any suggestions?

U' M' U' M' U M U' M' U' M U2 M' U' M2 (14)

 

[TDM]

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

z' // Inspection
U2 L' D // LSquare (3/3)
U B2 // LBlock (2/5)
M2 U2 M' U R U2 R // RSquare (7/12)
U' r U R' // RBlock (4/16)
U' F R' F' R U2 R U2 R' // CMLL (9/25)
M' U' M U' M' U' M' // EO (7/32)
M' U2 M' U2 M2 // ULUR (5/37)
U' // EP (1/38)
alg.garron.us

totally not using jarcs or anything
but if I had oriented it like that before scrambling, and had known the CMLL, I would actually have done this exact solution...