ELS F1
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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).
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Algorithms (11)
F' L' U L F R U R'
My choice
8 HTM · 8 STM · 8 QTM
rotationless
<U,R,F,L>
Cubemuch
F' Rw' F Rw F R U R'
8 HTM · 8 STM · 8 QTM
3-gen
rotationless
<U,R,F>
Cubemuch
(U') first, then:
R U R' Dw R' U R U' R' U R
11 HTM · 11 STM · 11 QTM
3-gen
rotationless
<U,R,D>
Do U' first (AUF) on the case as drawn. · Cubemuch
(U') first, then:
R U' R2 F' U' F U R2 U' R'
10 HTM · 10 STM · 12 QTM
3-gen
rotationless
<U,R,F>
Do U' first (AUF) on the case as drawn. · Cubemuch
(U') first, then:
R2 B' R' B x B' R' B R B R'
10 HTM · 10 STM · 11 QTM
2-gen
rotation
<R,B>
Do U' first (AUF) on the case as drawn. · Cubemuch
x U' Rw' U Rw y2 U Rw U Rw'
8 HTM · 8 STM · 8 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
y2 B Rw' U' B' Rw U Rw' B Rw
9 HTM · 9 STM · 9 QTM
3-gen
rotation
<U,R,B>
Cubemuch
(U2) first, then:
R U2 R' y' R' U2 R U' R' U R
10 HTM · 10 STM · 12 QTM
2-gen
rotation
oh
<U,R>
Do U2 first (AUF) on the case as drawn. · Cubemuch
(U') first, then:
y F U' R U2 R' U R U2 R' F'
10 HTM · 10 STM · 12 QTM
3-gen
rotation
<U,R,F>
Do U' first (AUF) on the case as drawn. · Cubemuch
(U2) first, then:
x U' B U B U' B y' U2 B' U' B
10 HTM · 10 STM · 11 QTM
2-gen
rotation
<U,B>
Do U2 first (AUF) on the case as drawn. · Cubemuch
(U2) first, then:
R U R' y' R' U2 R y R U R'
9 HTM · 9 STM · 10 QTM
2-gen
rotation
oh
<U,R>
Do U2 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: R U' R' F' Rw' F' Rw F. Every algorithm above was run by our logic engine from that state and reaches "f2l-eo".