3x3 Fewest Moves: Scramble Switch Tutorial (NISS) FMC

Lower your move count without solving any differently!
NISS stands for Normal Inverse Scramble Switch and lets you switch to a different scramble when you can't find a good way to solve something.

But you shouldn't just use CFOP. Try block building!

Using the code "JPERM" supports my channel and also gives you a discount on your order.

► How to Switch Scrambles (NISS):
1. Solve the cube
2. Reverse the solution you are currently on
-- switch scramble --
3. Do the scramble
4. Do the solution

Beginner:

Special Tutorials:

Advanced Tutorials:

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[JPerm]

0:00 Solving the Inverse Scramble (1 switch)
0:15 How to Reverse Moves
0:41 NISS Example Solve (many switches)
3:57 Writing the Final Solution

The example solve purposely avoided experimentation (forcing easier pairs, or OLL/PLL skips) to make it simpler and highlight how NISS works. In a real solve you have 1 hour, so make sure you try many more things than I did!

[LKCubing]

You should add:
“From the national record holder”

[dalkap]

Great job Dylan, even though it's a bit confusing :p

[extramane]

@J Perm, can you use different cross colors in the different scrambles?

[creeperstkoed]

So I commented 5 years ago about how this hurt my brain, I finally decided to learn this, and just noticed my comment lol, anywho, while learning I decided to try to figure out my own solution for the scramble shown in the video though I didn't limit myself on time and I allowed myself to use speedcubedb for algs because I don't know full OLL or move efficent PLLs, I ended up with a 49 move solution which goes as follows:

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

This solution I noticed that with the following moves on the regular scramble ends up with a solved F2L pair AND 2 additional middle layer edges solved AND the corners they belong to were on the top layer when solving for the green cross

F B L R F L' B' L' F2 U

The next set of moves were inserting said corners

F B D B' D' F B' D B D' F2

I wasnt a big fan of the last F2L case on the standard scramble so I checked the inverse, there was two different ways to insert it so I checked the OLL case for both of them on both the regular and inverse scramble along with the respective PLL cases after solving the OLL with the shortest algs, and the lowest I could get was 23 moves with the following 6 move insert

R' B' R2 D' R' D

For the best OLL PLL combo, I had to go back to the standard scramble, I used this OLL alg to solve case OLL 30

(y2) F U R U2 R' U' R U2 R' U' F'

Which when translated into the correct orientation turned into

L B U B2 U' B' U B2 U' B' L'

and for the resulting UB perm I used this alg

R' U R' U' R' U' R' U R U R2

which again translated into

L' B L' B' L' B' L' B L B L2

Then to finish it off just need a B2,

Part of the reason I commented this btw was because I have watched a little ahead in the FMC playlist and I remember something about a psuedo block similar to what you get after the first 2 parts of my solution so there is probably more optimization that can be done to this that I havent learned how to use in practice yet, so I want to see if others can optimize it further, that and I want people to roast my horrible solve lol

[thijsbeentjes]

Thanks for the recap, I used to know how to do this but kinda forgot

[jacqueslochs]

If I have a sequence of moves such as D’ F F’ D; when I cancel out F’ and F should I also cancel out D’ and D?

[insanetrickshots]

I don't get the "inverse scramble" How is it allowed to change the scramble?

[willgregor]

Just did my first FMC attempt (unofficial) with NISS and also got a 45 move solution. Also, with 55 being the average for CFOP, is that in a normal speedsolve or an optimal solve?

[neesarnccs]

Imagine

Doing the solution by just reversing the scramble