ELS E4
ZBLS
edge-slot
Find the pair's shape as for F2L, then count the misoriented last-layer edges (a top edge whose top facet does not show the top colour).
Your status
Algorithms (9)
R U' M U' R' U M'
My choice
9 HTM · 7 STM · 9 QTM
3-gen
rotationless
oh
<U,R,M>
Cubemuch
R U M' U R' U' M
9 HTM · 7 STM · 9 QTM
3-gen
rotationless
oh
<U,R,M>
Cubemuch
R U R' F R' F' R
7 HTM · 7 STM · 7 QTM
3-gen
rotationless
<U,R,F>
Cubemuch
R U x R' U R' U' R
7 HTM · 7 STM · 7 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
R U R' Rw U R' U' R Rw'
9 HTM · 9 STM · 9 QTM
2-gen
rotationless
oh
<U,R>
Cubemuch
(U) first, then:
y Rw U' Rw U' x Rw' U Rw' U
8 HTM · 8 STM · 8 QTM
2-gen
rotation
oh
<U,R>
Do U first (AUF) on the case as drawn. · Cubemuch
x U R' U' R y R2 U' R' U
8 HTM · 8 STM · 9 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
(U2) first, then:
R2 D R' U2 R D' R2 F' U' F
10 HTM · 10 STM · 13 QTM
rotationless
<U,R,F,D>
Do U2 first (AUF) on the case as drawn. · Cubemuch
(U') first, then:
R2 y U R U' R' y' R' U2 R'
8 HTM · 8 STM · 10 QTM
2-gen
rotation
oh
<U,R>
Do U' first (AUF) on the case as drawn. · Cubemuch
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: M' U R U' M U' R'. Every algorithm above was run by our logic engine from that state and reaches "f2l-eo".