[Help Thread] FMC Discussion

[irontwig]

Nice, but I'm looking forward to cancelling my membership for the second time.

 

[qaz]

Finally, they accepted my application to club 31. What happens after the scramble switch is particularly ridiculous.

Done at Indiana 2014.

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

On inverse:
D U R2 L F' //2x2x2 (5/5)
D2 B2 D2 B2 //2x2x3 (4/9)
F' R' F2 D F' D2 //F2L-1 (6/15)

Switch to Normal:
D' R2 D //F2L (3/18)
F D R D' R' F' R2 //lol (7/25)

Skeleton:
D' R2 D F D R @ D' R' F' R2 D2 F D' F2 R F B2 D2 B2 D2 F L' R2 U' D'
@: B D' F' D B' D' F D (2 moves cancelled)
Final solution: D' R2 D F D R B D' F' D B' D' F R' F' R2 D2 F D' F2 R F B2 D2 B2 D2 F L' R2 U' D' (31)

hey we had the same 2x2x3!

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

on inverse:
D U R2 L F' //2x2x2 (5/5)
D2 B2 D2 B2 //2x2x3 (4/9)
on normal:
R B' D' B R2 //F2L-1 (5/14)
D2 B' D B D R D' R' D2 R D R' B' D2 B R D R' D' //F2L + LL skip (19/33)

solution: R B' D' B R2 D2 B' D B D R D' R' D2 R D R' B' D2 B R D R' D' B2 D2 B2 D2 F L' R2 U' D' (33)

after F2L-1 i was pretty stuck, so i just messed around until i stumbled on an LL skip

 

[Benyó]

Finally, they accepted my application to club 31. What happens after the scramble switch is particularly ridiculous.

Done at Indiana 2014.

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

On inverse:
D U R2 L F' //2x2x2 (5/5)
D2 B2 D2 B2 //2x2x3 (4/9)
F' R' F2 D F' D2 //F2L-1 (6/15)

Switch to Normal:
D' R2 D //F2L (3/18)
F D R D' R' F' R2 //lol (7/25)

Skeleton:
D' R2 D F D R @ D' R' F' R2 D2 F D' F2 R F B2 D2 B2 D2 F L' R2 U' D'
@: B D' F' D B' D' F D (2 moves cancelled)
Final solution: D' R2 D F D R B D' F' D B' D' F R' F' R2 D2 F D' F2 R F B2 D2 B2 D2 F L' R2 U' D' (31)

it is funny, how you chose the 'more difficult' way to find your solution
try this instead of switching to normal after move 15:
B R U R' U' B' R2 - 7/22
D' R2 . D - 3/25
insert at . -› B U B' D B U' B' - 8-2/31

it is the same solution but it would have saved you some time

 

[goodatthis]

Just wanted to share an interesting scramble/skeleton. Tips are appreciated!

Also, I would like to see how a more experienced FMCer would go about with a continuation of my 2x2x3, since mine was crap.

By the way, I basically just went to my timer, got a random scramble, and got this. Unfortunately, columns aren't as extremely useful in FMC as they might seem to be.
Scramble: F R2 D' F' B' L U2 F B2 L2 B2 L2 U' F2 L2 U' R2 F2 R2
Inverse: R2 F2 R2 U L2 F2 U L2 B2 L2 B2 F' U2 L' B F D R2 F'


L2 B L2 B' L' B D //2x2x3 honestly that square just came out of nowhere when I canceled into a sledge.
F' D R' B R B' D' //F2L-1
U L F L' F' U' D' F2 L D' L' D2 //to L4C bad, too long
IF says there's no proper insertions?

This is what happened if you switch after the 2x2x3 and take a CFOPy approach: (interesting, not very good)
F D' F2 D R' D R // Pair
D' R D R' D' F' D' F //Pair
D R D' F D F2 R F R2 (OLSLLEF thingy) //L3C

Also, can someone tell me how you would write down a final NISS solution using either one or two switches?

 

[Cale S]

Also, can someone tell me how you would write down a final NISS solution using either one or two switches?

You had one switch, so you would take your moves after the switch, invert them, and put them at the end of your solution, like this:
L2 B L2 B' L' B D //2x2x3
R2 F' R' F2 D' F' D R' D' // inverse of moves to L3C
F' D F D R D' R' D // inverse of moves to second pair
R' D' R D' F2 D F' // inverse of moves to first pair

 

[Kit Clement]

it is funny, how you chose the 'more difficult' way to find your solution
try this instead of switching to normal after move 15:
B R U R' U' B' R2 - 7/22
D' R2 . D - 3/25
insert at . -› B U B' D B U' B' - 8-2/31

it is the same solution but it would have saved you some time

Interesting, when I did that solve, I just gave up after seeing the flipped green-red edge and tried NISS first. Not sure why I didn't try performing 6 move OLLs from a few angles.

 

[TheDubDubJr]

Finally, they accepted my application to club 31.

hey we had the same 2x2x3!

Yea a lot of people had the same 2x2x2 on inverse. I used the alternate 2x2x3 though :3

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

on inverse:
D U R2 L F' //2x2x2 (5/5)
D' B2 D B2 //2x2x3 (4/9)
D F' R' F2 D2 F' D // F2L-1 (7/16)
R2 B R' B' R' D' R D R2 // All-2twisted (9/25)

Skeleton on Normal
R2 D' R' D R B R B' R2 D' F D2 F2 R F D' B2 D' B2 D F L' R2 U' D' (25)

First Insertion
R2 D' R' D R B R B' R2 D' F D2 F2 R F D' B2 [F D' B2 D F' D' B2 D] D' B2 D F L' R2 U' D' // 8-moves cancel

Second Insertion
R2 D' R' D R B R B' R2 D' [D' F U2 F' D F U2 F'] F D2 F2 R F D' B2 F D' B2 D L' R2 U' D' // 3-moves cancel

Solution
R2 D' R' D R B R B' R2 D2 F U2 F' D F U2 D2 F2 R F D' B2 F D' B2 D L' R2 U' D' (30)


Yay for Optimal
http://if.qiyuuu.com/cube/if/b42ef47290741749d13fb0483a4b5251.cube

 

[Laura O]

After submitting my solution to this week's Weekly FMC Comp I tried to find other finishes and found this:

Spoiler

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

2x2x3: B2 R2 L F R2 U2 B R2
switch and L3C: R U' R' L U2 L D F D' L2

Skeleton: B2 R2 L F R2 U2 * B R2 L2 D F' D' L' U2 L' R U R' (18 moves)
* = D2 B' U' B D2 B' U B

Solution: B2 R2 L F R2 U2 D2 B' U' B D2 B' U B2 R2 L2 D F' D' L' U2 L' R U R' (25 moves)

 

[Prakhar]

Can you explain your continuation after 2x2x3. I couldn't make out

 

[mycube]

Can you explain your continuation after 2x2x3. I couldn't make out

Did you try it on the inverse scramble? There it's easy to understand

 

[Laura O]

Can you explain your continuation after 2x2x3. I couldn't make out

Could you please edit your post and spoiler that again?
That's a solution of a current competition, so we should avoid that anyone who wants to compete in this reads it unintentionally.

To answer your question:

Spoiler

Did you see the switch after the 2x2x3 (maybe if you don't know what that is look here)?
Anyway, I removed the unoriented edge from the FR slot (R U' R') and then it's just blockbuilding.

 

[Kit Clement]

Lots of us re-attempted the Tree Town 2013 scramble last night, because we sucked at FMC then and wanted to see how we'd do now. This was my solution:

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

(Initially premove was B, later came up in NISS)

N: U' F R L' B L U2 F2 (B') //PS 2x2x3 (8/8)
I: B' R B' R' D2 R B //F2L-1 (7/15)
N: (B) R' B' R D' R D R' (7/22)

Skel: U F (@1) R L' B L U2 F2 R' B' R D' R D R' B' (@2) R' D2 R B R' B (22 to 5 corners)

(@1): F' D B2 D' F D B2 D'
(@2): B2 D' F' D B2 D' F D

Final: U' D B2 D' F D B2 D' R L' B L U2 F2 R' B' R D' R D R' B D' F' D B2 D' F D R' D2 R B R' B (35)

Insertions aren't optimal - had to find something in the last 10 minutes and I was happy to cancel 3 moves. If anyone has any advice for me outside of the insertions, especially on the transition from F2L-1 to skeleton, it would be much appreciated.

 

[Torch]

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

Here's my solution. Found in ~40 minutes.

Premove:R'
L F R U F2//2x2x2
B' D' B' R'//pseudo 2x2x3
D' R' L' D2 L//EO
switch to inverse
B' D B' D//F2L minus 1
B D B D' B' D B' D'//lucked into L3C

Skeleton: L F R U F2 B' D' B' R' D' R' L' D2 L D B D' B D [1] B' D' B' D' B D' B R'
[1]: D2 R' U R D2 R' U' R

Solution: L F R U F2 B' D' B' R' D' R' L' D2 L D B D' B D' R' U R D2 R' U' R B' D' B' D' B D' B R' (35)

 

[Ninja Storm]

I have no idea how to do FMC, but I want to get a decent result at the FMC USA 2014 thing, so I thought I'd practice when I have to be quiet.

I don't know what you guys are talking about with premoves and inverses and NISS and switches and gobbledygook, but I took a stab at this:

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

F U2 D2 R’ //2x2(4/4)
U L’ U2 B U’ R’ U’ R//2x2x3(8/12)
L’ U2 B L’ B’//3 F2L pairs(5/17)
L’ U2 L U’// all edges(4/21)

I have no idea where to go from here. Any tips?

 

[goodatthis]

I have no idea how to do FMC, but I want to get a decent result at the FMC USA 2014 thing, so I thought I'd practice when I have to be quiet.

I don't know what you guys are talking about with premoves and inverses and NISS and switches and gobbledygook, but I took a stab at this:

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

F U2 D2 R’ //2x2(4/4)
U L’ U2 B U’ R’ U’ R//2x2x3(8/12)
L’ U2 B L’ B’//3 F2L pairs(5/17)
L’ U2 L U’// all edges(4/21)

I have no idea where to go from here. Any tips?

From here you would do a few corner insertions, which are basically just corner commutators that you insert into your solution in order to cancel moves. Honestly I still haven't even got insertions down yet, so I can't be of much use beyond that.

 

[guysensei1]

I have no idea how to do FMC, but I want to get a decent result at the FMC USA 2014 thing, so I thought I'd practice when I have to be quiet.

I don't know what you guys are talking about with premoves and inverses and NISS and switches and gobbledygook, but I took a stab at this:

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

F U2 D2 R’ //2x2(4/4)
U L’ U2 B U’ R’ U’ R//2x2x3(8/12)
L’ U2 B L’ B’//3 F2L pairs(5/17)
L’ U2 L U’// all edges(4/21)

I have no idea where to go from here. Any tips?

I highly suggest you watch this video. You'll quickly understand premoves and inversions.
http://youtu.be/jVShZKOgFrk

 

[Kit Clement]

Stupid easy scramble: D2 L2 B2 U' L2 B2 D' L2 F2 L2 B' D' L' U2 R F2 R U R' D

On inverse:
L' U2 //2x2x2 (2/2)
F R' D //2x2x3 (3/5)
R2 F2 R F' D R2 D' //F2L-1 (7/12)
F R' F' R' //4 corners (4/16)

Skel: R F R F' (@1) D R2 D' F R' F2 (@2) R2 D' R F' U2 L
(@1): F2 D B D' F2 D B' D
(@2): F2 L' B' L F2 L' B L

Final: R F R F D B D' L' B' L F2 L' B L D B' R2 D' F R' F2 R2 D' R F' U2 L (27)

Sadly, that wasn't optimal for my skeleton, I missed out on a 26. Still, I'll take a PB single and mean (31, 35, 27).

I have no idea how to do FMC, but I want to get a decent result at the FMC USA 2014 thing, so I thought I'd practice when I have to be quiet.

I don't know what you guys are talking about with premoves and inverses and NISS and switches and gobbledygook, but I took a stab at this:

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

F U2 D2 R’ //2x2(4/4)
U L’ U2 B U’ R’ U’ R//2x2x3(8/12)
L’ U2 B L’ B’//3 F2L pairs(5/17)
L’ U2 L U’// all edges(4/21)

I have no idea where to go from here. Any tips?

While you did get to 5 corners, this is not a good case -- Two 2-cycles and 1 twisted. That takes three 3-cycle insertions, one to get the twisted corner unpermuted and solve a corner, one to solve another corner and leave three, and then another to solve the rest. If you're going to leave 5 corners, you want to make sure it's a 5-cycle, that way you can solve two on the first 3-cycle and the rest on the second.

Let's see what I can do with your same block:

F U2 D2 R’ //2x2(4/4)
U L’ U2 B U’ R’ U’ R//2x2x3(8/12)
L F' L' F L2 //F2L-1 (5/17)
U L U L' B' U B //5-cycle (7/24)

24 to five corners isn't particularly good, but I'm not really good at FMC either.

After that, you'd have to learn how to insert. Also, I highly recommend learning NISS, it's surprisingly simple and often effective when you're stuck.

 

[Sebastien]

Stupid easy scramble: D2 L2 B2 U' L2 B2 D' L2 F2 L2 B' D' L' U2 R F2 R U R' D

On inverse:
L' U2 //2x2x2 (2/2)
F R' D //2x2x3 (3/5)
R2 F2 R F' D R2 D' //F2L-1 (7/12)
F R' F' R' //4 corners (4/16)

Skel: R F R F' (@1) D R2 D' F R' F2 (@2) R2 D' R F' U2 L
(@1): F2 D B D' F2 D B' D
(@2): F2 L' B' L F2 L' B L

Final: R F R F D B D' L' B' L F2 L' B L D B' R2 D' F R' F2 R2 D' R F' U2 L (27)

Sadly, that wasn't optimal for my skeleton, I missed out on a 26. Still, I'll take a PB single and mean (31, 35, 27).

you will definitely not like this but...

L' U2 //2x2x2 (2/2)
F R' D //2x2x3 (3/5)
R2 F2 R F' D R2 D' //F2L-1 (7/12)
F R' F' R' //4 corners (4/16)

Solve the rest: (R F R' F')*3 (3 times sexy move)

5 move cancelation.

(Inverse) Solution: L' U2 F R' D R2 F2 R F' D R2 D' F R2 F' R F R' F' R F R' F'

23 moves.

Another alternative finish:

2x2x2: L' U2
2x2x3: F R' D2 R D'
L5C: R' D' F' D F R F (14 moves)

The insertion finder gives me a 24 for that.

 

[Julian]

you will definitely not like this but...

L' U2 //2x2x2 (2/2)
F R' D //2x2x3 (3/5)
R2 F2 R F' D R2 D' //F2L-1 (7/12)
F R' F' R' //4 corners (4/16)

Solve the rest: (R F R' F')*3 (3 times sexy move)

5 move cancelation.

(Inverse) Solution: L' U2 F R' D R2 F2 R F' D R2 D' F R2 F' R F R' F' R F R' F'

23 moves.

Another alternative finish:

2x2x2: L' U2
2x2x3: F R' D2 R D'
L5C: R' D' F' D F R F (14 moves)

The insertion finder gives me a 24 for that.

Without seeing your post, I was about to post the same thing with the words "I hate to tell you this"

 

[TheDubDubJr]

you will definitely not like this but...

L' U2 //2x2x2 (2/2)
F R' D //2x2x3 (3/5)
R2 F2 R F' D R2 D' //F2L-1 (7/12)
F R' F' R' //4 corners (4/16)

Solve the rest: (R F R' F')*3 (3 times sexy move)

5 move cancelation.

(Inverse) Solution: L' U2 F R' D R2 F2 R F' D R2 D' F R2 F' R F R' F' R F R' F'

23 moves.

Another alternative finish:

2x2x2: L' U2
2x2x3: F R' D2 R D'
L5C: R' D' F' D F R F (14 moves)

The insertion finder gives me a 24 for that.

I wish I would have looked at his solution in depth last night because I probably would have seen the same thing and facepalmed.

And I also did find that L5C in 14moves pretty shortly after looking at Kits 2x2x3 last night :3