[Help Thread] My FMC NISS isn't working pls help😟😟

[d---]

I have been trying to learn FMC and get a good time with it, but for some reason my Niss isn't working as I believe it should.

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

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

I use two cubes for FMC, to have both scrambles at the same time.

Green front, white up

B F R // WGR 2x2x1
U' F U2 // 2x2x2
B D B2 / 2x2x3

After this, the best move was on the inverse scramble, so I did the inverse of everything above (B2 D' B' U2 F' U R' F' B'), completed the correct scramble, which got me a different 2x2x3. I then did the algorithm R' D2 R' F' L2 F2 L F2 L F to get an F2L-1.

I am trying to get back across to the original scramble on my second cube but I can't seem to get it. I am doing the inverse of the algorithm above (F' L' F2 L' F2 L2 F R D2 R), followed by the original scramble, and then the nine moves I did first. However, this does not give an F2L-1 like I believe it should. What am I doing wrong?

Also, is there any way to get fewer moves?

 

[OreKehStrah]

I have been trying to learn FMC and get a good time with it, but for some reason my Niss isn't working as I believe it should.

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

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

I use two cubes for FMC, to have both scrambles at the same time.

Green front, white up

B F R // WGR 2x2x1
U' F U2 // 2x2x2
B D B2 / 2x2x3

After this, the best move was on the inverse scramble, so I did the inverse of everything above (B2 D' B' U2 F' U R' F' B'), completed the correct scramble, which got me a different 2x2x3. I then did the algorithm R' D2 R' F' L2 F2 L F2 L F to get an F2L-1.

I am trying to get back across to the original scramble on my second cube but I can't seem to get it. I am doing the inverse of the algorithm above (F' L' F2 L' F2 L2 F R D2 R), followed by the original scramble, and then the nine moves I did first. However, this does not give an F2L-1 like I believe it should. What am I doing wrong?

Also, is there any way to get fewer moves?

You need to check your solution. R' D2 R' F' L2 F2 L F2 L F does not leave F2L-1 on the inverse scramble from white top green front.

 

[d---]

You need to check your solution. R' D2 R' F' L2 F2 L F2 L F does not leave F2L-1 on the inverse scramble from white top green front.

Well umm...
Yeah, turns out I kept regripping to white top blue front... And that's why I couldn't get it to work.
Thanks for ur help!!

 

[HappyChristmas]

My NISS isnt working idk what i make wrong but i can't write the solution when i write all of normal solution and reverse of the inverse solution of ALL inverse scramble It not works
Sorry for my bad english