ELS F4
ZBLS
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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 (8)
(U') first, then:
F U R U' R' F' R U' R'
My choice
9 HTM · 9 STM · 9 QTM
3-gen
rotationless
<U,R,F>
Do U' first (AUF) on the case as drawn. · Cubemuch
R U2 R U B U' B' R2
8 HTM · 8 STM · 10 QTM
3-gen
rotationless
<U,R,B>
Cubemuch
(U) first, then:
y' B Rw U' Rw B Rw2 U B'
8 HTM · 8 STM · 9 QTM
3-gen
rotation
<U,R,B>
Do U first (AUF) on the case as drawn. · Cubemuch
(U) first, then:
R y R U x R2 U R U2
7 HTM · 7 STM · 9 QTM
2-gen
rotation
oh
<U,R>
Do U first (AUF) on the case as drawn. · Cubemuch
R y U R U x R2 U R U2
8 HTM · 8 STM · 10 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
(U) first, then:
R U R y U R U' x R' U2
8 HTM · 8 STM · 9 QTM
2-gen
rotation
oh
<U,R>
Do U first (AUF) on the case as drawn. · Cubemuch
R U2 R y U R U' x R' U2
8 HTM · 8 STM · 10 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
(U') first, then:
y' Lw y' Lw y' Lw U' Lw' U' Lw U' Lw'
9 HTM · 9 STM · 9 QTM
2-gen
rotation
<U,L>
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: R2 B U B' U' R' U2 R'. Every algorithm above was run by our logic engine from that state and reaches "f2l-eo".