[Help Thread] FMC Discussion

Here is my 25.67 official FMC mean from Tachikawa FMC, and this mean is Asian record!!!


1st scramble: R' U' F U F2 R2 F2 R2 D F2 U2 B L F2 R2 B F2 R' B L D' L' U R' U' F
solution: U2 B2 R2 B2 U B2 U' B2 U' R' B' R' F' B' R' F2 R B R' F L' F R D F2 (25moves)

(start on inverse)
F2 D' F' L F2 // 222
R B R // EO+pair
(switch to normal)
U2 B2 R2 // 223
B2 U B2 U' B2 U' // L5C

skeleton: U2 B2 R2 B2 U B2 U' B2 U' R' B' R' F2 L' * F D F2
insert at *:[L F @ R' F' L' F R F']
insert at @:[B' R' F2 R B R' F2 R]


2nd scramble: R' U' F U2 L2 F L2 B U2 B2 F' L' D2 F' L' F D2 B' U2 R' D' B D' R' U' F
solution: F2 D' R' D2 B' R' D' R D R B' R2 B R2 B' R' B R B' D' R' D F L' R B' (26moves)

(start on inverse)
B R' L F' // pseudo 222
(switch to normal)
F2 // 222
D' R' D2 // 223
B' R' D' R D R B' // F2L-1
(switch to inverse)
D' R D // EO
B R' B' R B R2 B' R2 // WV skip


3rd scramble: R' U' F L B2 D2 R' B2 R' B2 F2 D2 U' L2 D2 L2 F' D2 B D' U2 B' U R' U' F
solution: B' L' B F' R' F' L F2 L' U2 R D R' U R D' B U' B' R' F' U F B U2 F' (26moves)

B' L' B // pseudo 222
F' R' F' L F2 L' // pseudo F2L-1
(switch to inverse)
F U2 B' // F2L-1
F' U' F R B U B' R' U // L3C

skeleton: B' L' B F' R' F' L F2 L' U' * R B U' B' R' F' U F B U2 F'
insert at *:[U' R D R' U R D' R']

Tomoaki Okayama found 22moves solution.
If I found it, this mean would be WR tie (24.33).
 
Here is my 25.67 official FMC mean from Tachikawa FMC, and this mean is Asian record!!!


1st scramble: R' U' F U F2 R2 F2 R2 D F2 U2 B L F2 R2 B F2 R' B L D' L' U R' U' F
solution: U2 B2 R2 B2 U B2 U' B2 U' R' B' R' F' B' R' F2 R B R' F L' F R D F2 (25moves)

(start on inverse)
F2 D' F' L F2 // 222
R B R // EO+pair
(switch to normal)
U2 B2 R2 // 223
B2 U B2 U' B2 U' // L5C

skeleton: U2 B2 R2 B2 U B2 U' B2 U' R' B' R' F2 L' * F D F2
insert at *:[L F @ R' F' L' F R F']
insert at @:[B' R' F2 R B R' F2 R]


2nd scramble: R' U' F U2 L2 F L2 B U2 B2 F' L' D2 F' L' F D2 B' U2 R' D' B D' R' U' F
solution: F2 D' R' D2 B' R' D' R D R B' R2 B R2 B' R' B R B' D' R' D F L' R B' (26moves)

(start on inverse)
B R' L F' // pseudo 222
(switch to normal)
F2 // 222
D' R' D2 // 223
B' R' D' R D R B' // F2L-1
(switch to inverse)
D' R D // EO
B R' B' R B R2 B' R2 // WV skip


3rd scramble: R' U' F L B2 D2 R' B2 R' B2 F2 D2 U' L2 D2 L2 F' D2 B D' U2 B' U R' U' F
solution: B' L' B F' R' F' L F2 L' U2 R D R' U R D' B U' B' R' F' U F B U2 F' (26moves)

B' L' B // pseudo 222
F' R' F' L F2 L' // pseudo F2L-1
(switch to inverse)
F U2 B' // F2L-1
F' U' F R B U B' R' U // L3C

skeleton: B' L' B F' R' F' L F2 L' U' * R B U' B' R' F' U F B U2 F'
insert at *:[U' R D R' U R D' R']

Tomoaki Okayama found 22moves solution.
If I found it, this mean would be WR tie (24.33).
Congrats!!nice solves.
 
Here is my 25.67 official FMC mean from Tachikawa FMC, and this mean is Asian record!!!


1st scramble: R' U' F U F2 R2 F2 R2 D F2 U2 B L F2 R2 B F2 R' B L D' L' U R' U' F
solution: U2 B2 R2 B2 U B2 U' B2 U' R' B' R' F' B' R' F2 R B R' F L' F R D F2 (25moves)

(start on inverse)
F2 D' F' L F2 // 222
R B R // EO+pair
(switch to normal)
U2 B2 R2 // 223
B2 U B2 U' B2 U' // L5C

skeleton: U2 B2 R2 B2 U B2 U' B2 U' R' B' R' F2 L' * F D F2
insert at *:[L F @ R' F' L' F R F']
insert at @:[B' R' F2 R B R' F2 R]


2nd scramble: R' U' F U2 L2 F L2 B U2 B2 F' L' D2 F' L' F D2 B' U2 R' D' B D' R' U' F
solution: F2 D' R' D2 B' R' D' R D R B' R2 B R2 B' R' B R B' D' R' D F L' R B' (26moves)

(start on inverse)
B R' L F' // pseudo 222
(switch to normal)
F2 // 222
D' R' D2 // 223
B' R' D' R D R B' // F2L-1
(switch to inverse)
D' R D // EO
B R' B' R B R2 B' R2 // WV skip


3rd scramble: R' U' F L B2 D2 R' B2 R' B2 F2 D2 U' L2 D2 L2 F' D2 B D' U2 B' U R' U' F
solution: B' L' B F' R' F' L F2 L' U2 R D R' U R D' B U' B' R' F' U F B U2 F' (26moves)

B' L' B // pseudo 222
F' R' F' L F2 L' // pseudo F2L-1
(switch to inverse)
F U2 B' // F2L-1
F' U' F R B U B' R' U // L3C

skeleton: B' L' B F' R' F' L F2 L' U' * R B U' B' R' F' U F B U2 F'
insert at *:[U' R D R' U R D' R']

Tomoaki Okayama found 22moves solution.
If I found it, this mean would be WR tie (24.33).
Congrats uesyuu! I thought 1st and 2nd scrambles were hard, so finding sub 27-move solutions was awesome!
And here is my 22-move solution for the 3rd attempt.

Scramble: R' U' F L B2 D2 R' B2 R' B2 F2 D2 U' L2 D2 L2 F' D2 B D' U2 B' U R' U' F
Solution: B' L' B F2 U2 L F L' F' U2 F2 U F2 U' F2 U F U R' B U2 F' (22 moves)
(Inverse)
Pre-scramble: B' L B

F2L minus 1 slot: F U2 B' R U2

(Normal)
Pre-scramble: U2 R' B U2 F'

F2L minus 1 slot: B' L' B
Orient edges: F2 U2 L F L'
All: F' U2 F2 U F2 U' F2 U F U'
Correction: U2 R' B U2 F'
 
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A very weird 23:

L' U2 D2 R' D' L2 F R' F' U2 B' R2 L2 D2 B' R2 B U2 B
Inverse: B' U2 B' R2 B D2 L2 R2 B U2 F R F' L2 D R D2 U2 L

(D2 R' D') //EO
U2 B' U2 R' //2x2x2
(B' D2 L') //1x2x3
B L B' //leave 4c4e

Skeleton: U2 B' U2 R' @ B L B' L D2 B D R D2*
*D2 L' D L D2 // solve 4e leaving 4c in 16
@R2 B L B' # R2 B L' B' //3c insertion cancelling 7!
# F L F' R2 F L' F' R2 //3c insertion cancelling 2
=23 moves
 
Tried the Tachikawa FMC scrambles and got my second best mean (1 more move on any scramble would have tied pb)

(In the order I did them)
Scramble: R' U' F L B2 D2 R' B2 R' B2 F2 D2 U' L2 D2 L2 F' D2 B D' U2 B' U R' U' F
Pseduo 2x2x2: B' L' B (3/3)
F2L-1: (F U2 B' R U2) (5/8)
EO: (U2 L' U' L U') (5/13)
AB3T: (F R' F2 R F2) (5/18)
Skeleton: B' L' B F2 [3] R' F2 R F' U L' U L (U2 U2) R' B U2 F' [1] (-2/16)
Insertions:
[1]: -4 F U2 F' D F U2 F' D' (8/24)
[3]: -2 B L' B' R B L B' R' (8/32)
Cancellations: B' L' (B F2 B) L' B' R B L B' (R' R') F2 R F' U L' U L R' B (U2 F' F U2) F' D F U2 F' D' (-6/26)

Solution: B' L' B2 F2 L' B' R B L B' R2 F2 R F' U L' U L R' B F' D F U2 F' D'
26 HTM
Notes: F2l-1 5m, AB3T 15m, Done 30m, lucky to find 4 cancelled at end to start. Ended up w/ optimal
Scramble: R' U' F U F2 R2 F2 R2 D F2 U2 B L F2 R2 B F2 R' B L D' L' U R' U' F
1x2x2: (F2 D') (2/2)
1x2x3 + 2 Pairs: (B L') (2/4)
2x2x3: (F' B2 L F2) (4/8)
EO (+1x1x3): U R2 U' (3/11)
F2L-1: (B R B' R' B2) (5/16)
AB3C: (R B R B' R2) (5/21)
Skeleton: U R2 U' [2] R2 B R' B' R' B2 R B R' B' F2 L' B2 F L B' D F2
Insert @ [2]: -2 U F U' B U F' U' B' (8/29)
Cancellation: U R2 (U' U) F U' B U F' U' B' R2 B R' B' R' B2 R B R' B' F2 L' B2 F L B' D F2 (-2/27)

Solution: U R2 F U' B U F' U' B' R2 B R' B' R' B2 R B R' B' F2 L' B2 F L B' D F2
27 HTM
Notes: Skeleton in 31m, Done @45m, optimal
Scramble: R' U' F U2 L2 F L2 B U2 B2 F' L' D2 F' L' F D2 B' U2 R' D' B D' R' U' F
1x2x2: (B R') (2/2)
2 Pairs: B' (1/3)
2nd 1x2x2: (B' L' B') (3/6)
2x2x3: (F' R D' F2) (4/10)
F2L: (L' U' L' U' L') (5/15)
AB3C: (R B U B' U' R') (6/21)
Skeleton: B' R U B U' [2] B' R' L U L U L F2 D R' F B L B R B'
Insert @ [2]: L B' R' B L' B' R B (8/29)
Cancellation: B' R U B U' L B' R' B L' B' (R B B' R') L U L U L F2 D R' F B L B R B' (-4/25)

Solution: B' R U B U' L B' R' B L' B' L U L U L F2 D R' F B L B R B'
25 HTM
Notes: 19m Skeleton, 29m Solution, optimal
Mean: 26 HTM
 
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My attempt at the Brno Open FMC scramble:

R' U' F U B2 U2 B2 L2 U B2 L2 D B2 U2 B R2 D B' R D' U' L B' U' R' U' F
Inv: F’ U R U B L’ U D R’ B D’ R2 B’ U2 B2 D’ L2 B2 U’ L2 B2 U2 B2 U’ F’ U R

(D2 B’ U2 L) // EO + pseudo 2x2x2 (4/4)
L // pseudo fix (1/5)
(F2 D’ F2 D2 F2) // 2x2x3 (5/10)
(D’ R’ D2 R’) // pseudo F2L-1 (4/14)
R2 // pseudo fix (1/15)
D R’ D2 R // F2L pair
D2 R’ D2 R // insert and solve edges to L3C 8/23

Skeleton: L R2 D R’ D2 R D2 R’ D2 R2 D2 R D F2 D2 ^ F2 D F2 L’ U2 B D2 // 22 (1 move cancels)

^ D’ B2 D F2 D’ B2 D F2 (4 moves cancel)

L R2 D R’ D2 R D2 R’ D2 R2 D2 R D F2 D B2 D F2 D’ B2 D2 F2 L’ U2 B D2 // 26 total
Would've tied first, not too bad
 
I have found a smooth 21 solution for the 3rd scramble of the German forum FMC (round started on the 9th of June). Everyone else seems to have missed it, so I am posting this here.
Scramble: R' U' F R2 B' L2 B U2 B2 F' D2 L F2 U' B2 U' F' L B L' F2 U' R' U' F
R2 F R' F //2x2x2 (4/4)
F U' F' //Pseudo 2x2x3 + pair, one move cancels (2/6)
U + B U2 R' U' R L' B' //All but 3 corners (8/14)
+ = U L U' R2 U L' U' R2 //3c (7/21)

It's the very first thing I tried; I have found this solution in about 4 minutes, insertion included :)
 
I have found a smooth 21 solution for the 3rd scramble of the German forum FMC (round started on the 9th of June). Everyone else seems to have missed it, so I am posting this here.
Scramble: R' U' F R2 B' L2 B U2 B2 F' D2 L F2 U' B2 U' F' L B L' F2 U' R' U' F
R2 F R' F //2x2x2 (4/4)
F U' F' //Pseudo 2x2x3 + pair, one move cancels (2/6)
U + B U2 R' U' R L' B' //All but 3 corners (8/14)
+ = U L U' R2 U L' U' R2 //3c (7/21)

It's the very first thing I tried; I have found this solution in about 4 minutes, insertion included :)
Daniel Sheppard found this solution too, after I shared the scramble with him. He asked me to post his solutions after he does the other two scrambles.


Here are my solutions to the Tachikawa FMC scrambles, 24.67 mean:

#1 26 moves
R' U' F U F2 R2 F2 R2 D F2 U2 B L F2 R2 B F2 R' B L D' L' U R' U' F
F D2 B2 // pairs
R2 U' R2 //222
U' F L F2 //223
L U' B L B' L2 @ //F2L-1
F2 R' F' R //3c
@ B D' B' U' B D B' U (2 cancel)
=26 moves

#2 25
R' U' F U2 L2 F L2 B U2 B2 F' L' D2 F' L' F D2 B' U2 R' D' B D' R' U' F
(F') F' L D2 F' D2 //222
(B2 D) D //223
U R' U' R B' //F2L (leave 4c4e)

Skeleton: F' L D2 F' D' U @ R' U' R B' D' B2 F
@ B2 L' U' B' U L B2 //20 to 3c
New skeleton: F' L D2 F' D' U * B2 L' U' B' U L B2 R' U' R B' D' B2 F
*L F' L' B2 L F L' B2 (3 cancel)
=25 moves

#3 23
R' U' F L B2 D2 R' B2 R' B2 F2 D2 U' L2 D2 L2 F' D2 B D' U2 B' U R' U' F
B' L' B //pseudo 222
(F U2 B' R U2) //F2L-1 (same as Okayama)
(F2) //4c4e

Skeleton: B' L' F2 @ B U2 R' B U2 F'
@B' D2 L2 D' F2 U R F R' U' F2 D L2 D2 B (1 cancel)
=23 moves
 
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Daniel Sheppard found this solution too, after I shared the scramble with him. He asked me to post his solutions after he does the other two scrambles.


Here are my solutions to the Tachikawa FMC scrambles, 24.67 mean:

#1 26 moves
R' U' F U F2 R2 F2 R2 D F2 U2 B L F2 R2 B F2 R' B L D' L' U R' U' F
F D2 B2 // pairs
R2 U' R2 //222
U' F L F2 //223
L U' B L B' L2 @ //F2L-1
F2 R' F' R //3c
@ B D' B' U' B D B' U (2 cancel)
=26 moves

#2 25
R' U' F U2 L2 F L2 B U2 B2 F' L' D2 F' L' F D2 B' U2 R' D' B D' R' U' F
(F') F' L D2 F' D2 //222
(B2 D) D //223
U R' U' R B' //F2L (leave 4c4e)

Skeleton: F' L D2 F' D' U @ R' U' R B' D' B2 F
@ B2 L' U' B' U L B2 //20 to 3c
New skeleton: F' L D2 F' D' U * B2 L' U' B' U L B2 R' U' R B' D' B2 F
*L F' L' B2 L F L' B2 (3 cancel)
=25 moves

#3 23
R' U' F L B2 D2 R' B2 R' B2 F2 D2 U' L2 D2 L2 F' D2 B D' U2 B' U R' U' F
B' L' B //pseudo 222
(F U2 B' R U2) //F2L-1 (same as Okayama)
(F2) //4c4e

Skeleton: B' L' F2 @ B U2 R' B U2 F'
@B' D2 L2 D' F2 U R F R' U' F2 D L2 D2 B (1 cancel)
=23 moves
Cool insertions for 2nd and 3rd skeletons! How many minutes did you need to find them?
 
2 solves in a row with 2c2e insertions
German comp spoilers
R' U' F R2 F2 D F2 R2 D R2 U R' U' B2 R B L' U' F L' D2 F2 D R' U' F

(F) R' F2 D F' // EO + Square
(L U' R) // 2x2x2 + Square
L' R D' R' L B2 L2 // F2L - 1
(R' L D L' D' R D') // 2c2e

R' F2 D F' L' R D' R' L @ B2 L2 D R' D L D' L' U L' F'
@ = L2 B2 R D R' B2 L U' L U

Solution: R' F2 D F' L' R D' R' L' B2 R D R' B2 L U' L U B2 L2 D R' D L D' L' U L' F'

29 Moves

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

F' U B (B2) // 2x2x2
(R2 U' F') // EO
R U R2 F2 // 2x2x3
(R2 U2 R2) // F2L - 1
(U F' U' F U) // 2c2e

F' U B R @ U R2 F2 U' F' U F U' R2 U2 R2 F U R2 B2
@ = R' F' R2 U' R' U R' F R U F' U'

Solution: F' U B F' R2 U' R' U R' F R U F' R2 F2 U' F' U F U' R2 U2 R2 F U R2 B2

27 Moves
 
Absolutely crazy, but 22.33 Mean of 3! Smashed my old PB by 3 moves total (was 23.33).

Solve #1: 20
U2 L2 B R' L2 D' B U' L' F2 U L2 F2 B2 D R2 U' F2 D' F2
R D2 F R' //222
([L] F2 L D') //223 (Inserted L move)
D' L' D L' F L' //F2L
L F L D' L' D F' L' F2 //LL

Solution: R D2 F R' D' L' D L' F2 L D' L' D F' L' F2 D L' F2 L' (20)

Very lucky solve, but not a ridiculously easy scramble at first glance. This is also my PB :)

Solve #2: 24
D2 B2 R2 D L2 R2 U' B L' D' L U2 B' L U L2 F L U
(U) //2 pairs
(R2 F' D) //square
R2 D2 R F R // 2x2x3
B' //10 moves to 4c4e

Skeleton: R2 D2 @ R F R B' D' F R2 U'
@ R' D L2 U R U' B2 L' B2 U R' U' L2 D' R (1 move cancels)

Solution: R2 D2 R' D L2 U R U' B2 L' B2 U R' U' L2 D' R2 F R B' D' F R2 U' (24)

Unfortunately not particularly lucky insertions, but still a good solve nonetheless.

Solve #3: 23
B2 L B2 U2 R B2 R U2 R' D2 F' D' L2 B L2 R' U' B' D2 L2
D' F L' //square
(U2 B2) //2 more :p
(F U2 B') //2x2x2+loads of stuff
(D2 R' D2) //F2L-1
R2 D2 B' D' B D' //16 to 4e

Skeleton: D' F L' R2 D2 B' D' B D R D2 B U2 B2 @ F' U2
@ R2 B2 D F2 L2 B2 U F2 (1 cancel)

Solution: D' F L' R2 D2 B' D' B D R D2 B U2 B2 R2 B2 D F2 L2 B2 U F U2 (23)
Optimal insertions using 1 cycle, but IF can do some godly stuff and cancel 14 on a different 4e alg+an edge comm :p

Overall very happy with this, no 'standard' insertions in the lot :p
 
How short should your skeleton be if you're going to attempt a 4c4e insertion and have it be worth it?
I'll normally only use it if it's <13, but I sometimes use it if it's over that if I can't find anything else. I think it normally takes 15-17 moves to actually insert, so with a <13 skeleton it should be sub-30.
 
I'll normally only use it if it's <13, but I sometimes use it if it's over that if I can't find anything else. I think it normally takes 15-17 moves to actually insert, so with a <13 skeleton it should be sub-30.

Sounds about right, I tried my first 4c4e today with an 18 move skeleton just to have actually done it, and ended up with 35 total.
 
Last week's weekly FMC:
22 HTM tied PB single and tied 1st place ( @Hssandwich great minds think alike)

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

R / (1/1) inserted move
U B' / (2/3) 221 block
D2 L' D R2 / (4/7) 222 + blocks
B' R B R' / (4/11) 221 block
U2 L2 U' / (3/14) F2L-1
B2 # L B2 L' / (4/18) ab3c

Insert at #: B R B' L B R' B' L' (8-4=4/22)

Other solutions/skeletons:

R U B' D2 L' D R2 / (7/7) same as final solution
U2 F' L F L U' / (6/13) ab5c
IF says optimal is 24

R U B' D2 L' D R2 B' R B R' U2 L2 / (13/13) same as final solution
B2 L B2 L' U' / (5/18) ab3c
IF says optimal is 23

R U B' D2 L' D R2 B' R B R' U2 L2 B2 L B2 / (16/16) same as previous skeleton
U' # L' / (2/18) all but block commutater
Insert at #: U B' L' B U' B' L B (8-3=5/23)
 
Not the best result, but it was my first time trying three insertions and I saw it had the chance to be sub-30 so I went for it. It was 14 moves to L5C, but the corners were a 3 pure cycle and two twisted corners. Anyhow, it's in the spoiler. 11 moves canceled all in all, pretty happy with it.

D' U' R2 B2 D F2 U' R2 F2 U' B' R U B U' B2 L' U' B'
Inv: (B U L B2 U B’ U’ R’ B U F2 R2 U F2 D’ B2 R2 U D)

U L’ // p2x2x2 (2/2)
(U2) // correction (1/3)
B’ D B R D2 R’ // 2x2x3 (6/9)
R’ D’ R // 1x2x2 block (3/12)
F2 D’ F2 // solve edges to L5C (3/15)

U L’ B’ @ D B R D2 R2 D’ R F2 D’ F2 U2 (14 – 1 move cancels on inv)

@ R U’ R’ D R U R’ D’ (2 moves cancel)

New skele: U L’ & B’ R U’ R’ D R U R’ B R D2 R2 D’ R F2 D’ F2 U2

& L B’ R B L’ B’ R’ B (6 moves cancel)

Newer skele: U B’ R B L’ B’ U’ R’ D R U R’ B R D2 R2 D’ % R F2 D’ F2 U2

% U R D2 R’ U’ R D2 R’ (2 moves cancel)

Final: U B’ R B L’ B’ U’ R’ D R U R’ B R D2 R2 D’ U R D2 R’ U’ R D2 F2 D’ F2 U2 (28)
 
interesting 24 on the daily /r/cubers scramble, lots of reverse NISS insertions

U2 F' L F L2 U L D' B U2 B' D B' R B2 L B' R' F2 L2
L2 F2 // 2x2x2
(U B) B // 2x2x3 minus corner
L F' L2 F // 3e6c

L2 @ F2 B L F' L2 F B' U'
@ = L' R' F' R' F L R2 // to 3e3c

L R' F' R' F L R2 F2 B L % F' L2 ^ F B' U'
^ = B' F' R B' R' B2 F // to L3C
% = [L' B L, F]

Solution: L R' F' R' F L R2 F2 B2 L F L' B' L F2 L2 B' F' R B' R' B F2 U'
24 moves

doing lots of practice before Nationals, currently at a 27.60 avg12
 
Ohai, I got a 23 at 6.25 Bay Area.
Try this scramble out!

1. R' U' F U2 F2 D2 F U2 F' L2 F' L2 F2 L2 D R D2 B U L' R2 U2 F2 U' R' U' F
Movecount - timestamp

24 moves - 15:17
D R D' U2 // 223
(F' D F' D') // F2L-1, edges bad
L F
L2 F'
L F L U L U'
L U' F U F2 L' // WTF???

23 moves - 25:45
D2 R D2 U2 // 223
(F U L U')
F' L2 F
(U' F U F)
(U L2 U' L2 U)
(L2 U' F' L) // WTF

26 moves - 43:15
D R D' U' L' U' // 223
L F' D F D'
D' L2 D2 F D'
L2 U L (1) U' L2 // AB3C (20)
(1): [L2, U R U'] // 8-2
 
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