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Got this super-lucky scramble from csTimer:
D2 L2 D2 B2 L2 B' F2 L2 B' L2 U2 B D' B' D2 L F U' F'

PB fail because I messed up

Solution:

Spoiler

y2 // inspection
R D R F2 D // cross
U' R' U R // 1st pair
Lw U L' U' M' // 2nd pair
U' L' U L // 3rd pair
R' D' R U R' D R // 4th pair / CLS
U' R U' R U R U R U' R' U' R2 // EPLL
U // AUF

U' F R F' L' D2 B R U' B2 U2 B2 D' L2 U L2 D2 R2 U
Roux OH: 8.05
My fastest OH single, but don't really want to count as PB. This scramble was a piece of cake. So much free stuff throughout the entire solve, not only the scramble.

I've been training using only distance-20 scrambles from cube20.org on the theory that this is better practice than random scrambles from the various scramble generators (tnoodle, cstimer, etc.) available on line since the scrambles will all be the same (and highest) degree of difficulty possible. Am I wrong? Please tell me why.

I've been training using only distance-20 scrambles from cube20.org on the theory that this is better practice than random scrambles from the various scramble generators (tnoodle, cstimer, etc.) available on line since the scrambles will all be the same (and highest) degree of difficulty possible. Am I wrong? Please tell me why.

Distance-20 states and a distance-17 states are actually identical for speedsolving, zero difference, so you'd save some energy if you just use cstimer or whatever you like

You ask why is your logic wrong? Well speedsolving solutions are always much more than optimal (~50 speed vs. ~18 optimal) so you wouldn't ever be able to "use" a, let's say, distance-15 scramble. Also just because the optimal moves for a whole cube is 20 vs. 18, it makes no difference to how many moves you would take to solve the cross or first block or whatever.
If you want to practice highest degree of difficulty solves, um, I'm not sure what to tell you.

Recently, in one of my comps, I got a scramble on square1 that let me get a 12 second single! I broke my pb by landslide. I don’t have the scramble, but I have a vlog of the solve on my channel if anyone wants to analyze it.

oops,i think i gave the scramble after,my scramble was R U L B L U L R' U L B and i accidentally got a centres and edges skip after i did the first layer,which was pretty inefficient so i can't reconstruct

z2 x'// Inspection
R2' F' R L' U' y' R' F R// XXXCross
y' U' R' U R U2 R' U R// F2L 4
U2 R U R' U' R' F R F'// OLL
U R U' R' U' R U R D R' U' R D' R' U2 R'