Imsoosm's Progression Thread - learning eg1

[Imsoosm]

Got a FMC PB in this weekly comp, probably because I spent more time than usual. Seeing that that's the case, I might work more on scrams 1 and 2.
(I usually do 10-15 minutes for sub-50 moves, 32 moves took me 25-30 minutes)
I'll attempt to explain the solution the best I can:

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

Solution:
R U' F D F' U F // 2x2x2 with CLS for the RG corner (with moves cancelled)
D L2 B L B L // F2L-1 (I couldn't find a good 2x2x3 so I just did the easiest pair, which ended up in another free pair)
R' B2 R2 // Fourth Pair cancelled into OLL
D' R2 B' R D // OLL cancelled into PLL (Ja Perm)
L D' B' D B D L' D2 B D B // Finish (Leftie Ja)

 

[NigelTheCuber]

genius solution couldn't understand the end though

 

[Imsoosm]

genius solution couldn't understand the end though

It's OLL 10 cancelled into Ja Perm leftie

 

[IsThatA4x4]

How did you get better than my FMC PB using FreeFOP!? That is one lucky F2L-1, mine always take so long...
(Also I got a 5 twisted corner skeleton so that didn't help)

 

[hyn]

Do u have to learn algs for corner twists, or are they like commutators? I usually just use beginner method last step if I get corner twists.

 

[Imsoosm]

Can cube explorer gen algs for 2x2? Nigel sent me a pdf version of best 2x2 algs doc file, and it has lots of LS inside, but I can't seem to find the case that I just got.

Also for some reason my cube explorer is in QTM. Is there a way to change it into HTM?

 

[IsThatA4x4]

I don't know about that, I just use OLL and PLL for my last layer and cancel as many moves as possible. @IsThatA4x4 probably knows all about it though.

@hydynn 2 comms is normally best, because you have 2 chances to cancel moves, and they might overlap; but there are some HTM optimal 2/3-flip algs which are really only worth using when it cancels a lot of moves in your skeleton. As always, you can find it in the FMC document ("bible") thing.

Edit: I'll explain how it works...
Let the twisted corners be "X" and "Y" You're looking for a 3-cycle that will affect those corners + another corner "A". For example, X > Y > A
This creates a normal 3 cycle, which you can solve with a commutator.
If it's a three flip, let's call the third "Z", you would want X > Y > Z for example.

Edit edit: another way, which is just for intuitive solving, only works for 2/4 flips, and is not for FMC as it isn't move efficient, is to:
1. Move the corners onto the same layer
2. Find an alg to flip one corner in place
3. Move the other (or another if 4 twist) corner into its spot
4. Inverse the alg for step 2
5. Undo the setup for step 3
6. Undo the setup for step 1

Here's an example 2-flip:
B2 (R U' R2 F R F') D' (F R' F' R2 U R') D B2

For 4 flip, just keep going until all corners are done, for example:
L' U L R U' R2 F R F' D F R' F' R2 U R' D R U' R2 F R F' D F R' F' R2 U R' D L' U' L
For each set of 2 corners, the twist alg may be different

 

[IsThatA4x4]

Can cube explorer gen algs for 2x2? Nigel sent me a pdf version of best 2x2 algs doc file, and it has lots of LS inside, but I can't seem to find the case that I just got.

Also for some reason my cube explorer is in QTM. Is there a way to change it into HTM?

1. Yes, just blank out the edges and centres
2. There should be a QTM and HTM executable file on your system for CE, choose HTM.

 

[NigelTheCuber]

i am looking to start doing fmc too, so this will help!

 

[Abram Grimsley]

i am looking to start doing fmc too, so this will help!

Same here

 

[Imsoosm]

@hydynn 2 comms is normally best, because you have 2 chances to cancel moves, and they might overlap; but there are some HTM optimal 2/3-flip algs which are really only worth using when it cancels a lot of moves in your skeleton. As always, you can find it in the FMC document ("bible") thing.

Edit: I'll explain how it works...
Let the twisted corners be "X" and "Y" You're looking for a 3-cycle that will affect those corners + another corner "A". For example, X > Y > A
This creates a normal 3 cycle, which you can solve with a commutator.
If it's a three flip, let's call the third "Z", you would want X > Y > Z for example.

Edit edit: another way, which is just for intuitive solving, only works for 2/4 flips, and is not for FMC as it isn't move efficient, is to:
1. Move the corners onto the same layer
2. Find an alg to flip one corner in place
3. Move the other (or another if 4 twist) corner into its spot
4. Inverse the alg for step 2
5. Undo the setup for step 3
6. Undo the setup for step 1

Here's an example 2-flip:
B2 (R U' R2 F R F') D' (F R' F' R2 U R') D B2

For 4 flip, just keep going until all corners are done, for example:
L' U L R U' R2 F R F' D F R' F' R2 U R' D R U' R2 F R F' D F R' F' R2 U R' D L' U' L
For each set of 2 corners, the twist alg may be different

How can I make my own commutators? I've read some stuff about it that you can make your own commutators because it is intuitive? (for exampe 3-style) Also are there any good video tutorials and stuffs on EO and other FMC stuff?

 

[hyn]

for commutators, https://www.speedsolving.com/threads/bh-tutorial.12268/
for eo just learn and practice zz

 

[NigelTheCuber]

jonathan permutation has a vid on it

 

[Imsoosm]

Pog great ao5
Generated By csTimer on 2022-06-13
avg of 5: 9.773

Time List:
(7.108), (11.761), 9.810, 9.731, 9.778

 

[NigelTheCuber]

Guys, I'm going to post a bit less and come on the forums a bit less these next few days because of my final exams. I know I said I didn't have them, but three of my kind teachers decided to give us finals. So I'm going to be reviewing a bit I guess, but I'll still come here twice a day or something.

teachers traitors

so sadj i will miss u

 

[Imsoosm]

teachers traitors

so sadj i will miss u

If you want to know, I always keep some forum pages open on a different desktop. So during some boring classes I can just come on here.

 

[NigelTheCuber]

If you want to know, I always keep some forum pages open on a different desktop. So during some classes I can just come on here.

Not during finals tho...

 

[IsThatA4x4]

Not during finals tho...

Plot twist: Imsoosm starts posting his answers and photos of the exams here, so we can do finals with him

 

[Imsoosm]

Plot twist: Imsoosm starts posting his answers and photos of the exams here, so we can do finals with him

We are allowed to use all resources (all the stuff the teacher gave us, documents, books, online) so it wouldn't be a big deal if I did... But I won't

 

[Imsoosm]

FMC PB2!!!!
Scramble: R' U' F R D2 U2 F D2 R2 F' L2 F' R2 B' R2 D R F2 U B U' B2 D R' U' F

Solution:
B' U' B2 U // 2x2x2
D' F D' F L' // x-cross
D R' B D' B' R // second pair
D' L' D L D2 L D L2 // third pair cancelled into fourth pair
D' L2 B' L' B // fourth pair
L' F' D' F D L // leftie OLL
D' // AUF

35 moves, PB2. Funny thing is I only spent 10 minutes on this solution. I'll do the rest tomorrow, I still have 2 exams tomorrow, but after that, I'm free!
Hopefully I can get a sub-40 avg.