[Help Thread] FMC Discussion

[TheNextFeliks]

Attempt at new fmc.mustcube.net round.

Spoiler: Warning Comp Still in Progress!!!!!!

Scramble:U2 R' L U2 B2 L' B L2 B' U F2 L2 R' D U2 L D2 F D B' L2 B U2 B2 U2 D F B2 L' R'
Solution: R' U L2 U' R U B U L U L B' U2 D' F2 D B D' F2 D R' U' R U2 B U2 B' D2 R D'
[@1] U L2 B U L U L B' [@2] U2 B R' U' R U2 B U2 B' D2 R D'
Insert at @1: R' U L2 U' R U L2 U'
Insert at @2: D' F2 D B D' F2 D B'

Pretty straight forward. used insertion finder for insertions. I need to try without. 30 htm. PB! Any critique?

 

[mycube]

Attempt at new fmc.mustcube.net round.

[/spoiler]
Pretty straight forward. used insertion finder for insertions. I need to try without. 30 htm. PB! Any critique?

don't count this as a pb because of the IF

 

[TheNextFeliks]

don't count this as a pb because of the IF

Ok. Still, only 20 move skeleton. Which is awesome for me.

 

[Attila]

HI
Don't be ashamed Tomoaki, we all suffer from hard scrambles these days:
Today Eindhoven open was very hard: D' U' F2 L2 U' B2 L2 U R2 U' R U L' D2 F' U B U' L2 B' U
There are 11 "bad" pairs in it.
My result: 33 moves, but anyway the name Guus was on the top of the results
Guus de Wit won with a PB of 29 moves, an excellent solve for such an scramble.
Can anyone sub-30 on this?

My 70 mins. solution:

L2 R2 F2 L2 B' D' F2 R U' L U2 D2 R'
U2 F' D' L R' B U B2 U D' L2 D U' 26 HTM 21 STM moves.
Explanation:
premoves: F2 B2
L2 R2 F2 L2 B' D' F2 R U all corners, and 4 edges,
U2 L U2 D2 R' more 2 edges,
U2 F' D' L R' B U B2 U D' L2 D U' L6E, both premoves cancel.

 

[guusrs]

My 70 mins. solution:

L2 R2 F2 L2 B' D' F2 R U' L U2 D2 R'
U2 F' D' L R' B U B2 U D' L2 D U' 26 HTM 21 STM moves.
Explanation:
premoves: F2 B2
L2 R2 F2 L2 B' D' F2 R U all corners, and 4 edges,
U2 L U2 D2 R' more 2 edges,
U2 F' D' L R' B U B2 U D' L2 D U' L6E, both premoves cancel.

woooooow, that's amazing Attila!

 

[irontwig]

Recently I've done quite a few solves starting with orientating all the edges. It seems to me that approach is at least as good as starting with a 2x2x3 or might be even better, at least for me since I'm not super awesome at block building. But as been said before; restricting oneself to only one is approach is terribly limiting. Any thoughts?

 

[MarcelP]

Recently I've done quite a few solves starting with orientating all the edges. It seems to me that approach is at least as good as starting with a 2x2x3 or might be even better, at least for me since I'm not super awesome at block building. Bus as been said before; restricting oneself to only one is approach is terribly limiting. Any thoughts?

Yes, I have been doing the same lately. However, I can get very nice frameworks with all edges in place in 20 - 30 moves, but then I always have too many corners out of place to make it a nice solution. So last few times I started with egdes first, then starting with block building and if all fails I find the shortest cross. In the end I always have too many moves LOL.

 

[okayama]

Recently I've done quite a few solves starting with orientating all the edges. It seems to me that approach is at least as good as starting with a 2x2x3 or might be even better, at least for me since I'm not super awesome at block building. Bus as been said before; restricting oneself to only one is approach is terribly limiting. Any thoughts?

My opinion based on my experience is: EO-first is worth trying as `one' option.
After EO, it becomes relatively (sometimes surprisingly) easy to make c/e pairs and blocks.
See, for example, my solutions in FMC446, FMC447 and FMC450.

However, I also agree with Teemu's opinion:

Sure it might occasionally bring good results, but correct EO doesn't really guarantee a short solution.

EO-first sometimes helps you, but sometimes not. So it is worth trying, but do not stick to.

 

[mycube]

Warning: Current weekly Competition 23!

Spoiler

i found a 12 move F2L but I am not able do find a good solution with it. Someone able to find something better?

on inverse: Pre: F2
D‘ B L2 B2 U
R D‘ F D2 F
R‘ D

 

[irontwig]

Decided to try the same scramble as the solution that Teemu commented on:

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

U B2 R2 B D' B2 U' L R B L2 B' R' B L2 B L2 R' U2 R L' U' L U' (24)

U B2 R2 B [EO+square+three pairs(!)]
D' B2 U' L2 [Pseudo 2x2x3 (pre-moves L U' instead of just L to save one and create two other pairs]
L'.B2 L2 R' U2 R L' U' [Leaving three corners]
L U' [Pre-moves]

.=R B L2 B' R' B L2 B'

 

[Yuxuibbs]

Tips? (scramble is from weekly comp #22)

Scramble: L2 F U' L' U' R D' B' R' F U2 F2 R' F2 R U2 L' U2 R' D2 F2
Solution: R U' R L' B' U2 L U' L' D U2 R' U' R U R' F U F2 L F L' y R' F R F' U R U R' Fw' L' U' L U Fw U2 R' U2 R U2 R' F R U R' U' R' F' R2 (50)

R U' R L' B' U2 L U' L' D U2 R' // X cross and F2L 2 set up (12/12)
U' R U R' // F2L 2 (4/16)
F U F2 L F L' // F2L 3 (6/22)
y R' F R F' U R U R' // F2L 4 (8/30)
Fw' L' U' L U Fw // OLL (6/36)
U2 R' U2 R U2 R' F R U R' U' R' F' R2 // PLL (14/50)
http://tinyurl.com/algRU-RL-B-U2LU

 

[irontwig]

My opinion based on my experience is: EO-first is worth trying as `one' option.
After EO, it becomes relatively (sometimes surprisingly) easy to make c/e pairs and blocks.
See, for example, my solutions in FMC446, FMC447 and FMC450.

One can not help to notice that these are all "no time limit" solutions (or rather the time limit is one week) and that you only reduce to <R,L,U,D,F2,B2>. Any reason why you don't try this approach in the one hour format?

 

[okayama]

My opinion based on my experience is: EO-first is worth trying as `one' option.
After EO, it becomes relatively (sometimes surprisingly) easy to make c/e pairs and blocks.
See, for example, my solutions in FMC446, FMC447 and FMC450.

One can not help to notice that these are all "no time limit" solutions (or rather the time limit is one week) and that you only reduce to <R,L,U,D,F2,B2>. Any reason why you don't try this approach in the one hour format?

• I don't limit the reduction to only <R,L,U,D,F2,B2>. See FMC432 and FMC409 for another example.
• I sometimes try EO-first approach in 1-hour too. See my solution in Japan Open 2012 and FMC416.

 

[TheNextFeliks]

I usually do a heise-like approach. Sometimes I cannot find a single square that would be decent. What should I do in this case? Also when I finish the f2l-1 I usually just orient and finish edges. That leaves about 5 corners sometimes 4 or 3. Finding two insertions can be tedious sometimes. How can I avoid that? Also, how to find insertions with lots of moves cancelling? Thanks.

 

[irontwig]

• I don't limit the reduction to only <R,L,U,D,F2,B2>. See FMC432 and FMC409 for another example.
• I sometimes try EO-first approach in 1-hour too. See my solution in Japan Open 2012 and FMC416.

Fair enough, how often do you try doing EO first though, often or just when block building doesn't give any good results?

 

[okayama]

Fair enough, how often do you try doing EO first though, often or just when block building doesn't give any good results?

I don't have any strategy at the moment.
Sometimes I try it first, sometimes I try it as a final option, sometimes I don't try it.

EDIT: this is my 300th post.

 

[solvelecewbe]

scramble= L2 R2 F B U2 B F L' F' L2 D' R' U2 R' F U B' D' F' U2 L' B' R' L' U2

My first FMC attempt

solution= Cross: X2 R' D F' L2 U2 R' U' R2

F2L: U' L U' L' B' U2 B R U R' U2 F U' F' U R' F R F2 U F

OLL: Y' R2 D' R U2 R' D R U2 R

PLL: X' R U' R' D R U R' D' R U R' D R U' R' D' F'

45 moves, any tips?

If you do an inverse scramble, do you write the inverse of the solution, or do you just say you used an inverse on the paper? Same with premoves?

 

[Julian]

If you do an inverse scramble, do you write the inverse of the solution, or do you just say you used an inverse on the paper? Same with premoves?

Your solution has to solve the given scramble. So you would give the inverse solution for an inverse scramble, and premoves you use end up going at the end of your solution.

 

[solvelecewbe]

Your solution has to solve the given scramble. So you would give the inverse solution for an inverse scramble, and premoves you use end up going at the end of your solution.

If premoves go on the end of the solution, wouldn't the cube end unsolved? Or does one solve the cube to a position where the premoves solve the cube?

EDIT: I looked at some solved and figured it out. thanks!

 

[ryn ball]

Hello FMC thread!, FMC is really interesting so I gave it a try but I have 0% knowledge on techniques so at the moment I used ZZ method (my main method) to solve the cube in few moves as possible. Here is my try:
scramble: D2 R' L B' U' B2 U2 R2 U R2 D2 R B' D2 B' L R' F' D U' L R2 D' R' D' (green front white top)
EOLine: L D B' D2 R' F'
F2L:
R
U' L' R U2 R
L' U L U' L U
R
L2 U L' U' L2 U' R' U L'
LL:
OLL: L U L' U L U2 L'
PLL: R2 U2 R U2 R2 U2 R2 U2 R U2 R2 (H perm) U' (auf)

total movecount: 47 HTM

F2l seem's okey for me as intuition goes but my LL was so long and I have 0% knowledge on LL in terms of FMCs. Can you guys suggest some LL techniques in FMC? much better if you guys recontruct my LL in my solve above so that I have an idea on LL FMC.

Thanks!