ELS F4
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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 (15)
R U' R' F' U' F R' F R F'
My choice
10 HTM · 10 STM · 10 QTM
3-gen
rotationless
<U,R,F>
Cubemuch
R U R' U' R U2 R' F' U2 F
10 HTM · 10 STM · 12 QTM
3-gen
rotationless
<U,R,F>
Cubemuch
(U) first, then:
y' Rw B U B' U' Rw' B U B'
9 HTM · 9 STM · 9 QTM
3-gen
rotation
<U,R,B>
Do U first (AUF) on the case as drawn. · Cubemuch
R' F R F' R U' R2 F R F'
10 HTM · 10 STM · 11 QTM
3-gen
rotationless
<U,R,F>
Cubemuch
(U') first, then:
F R' F' R U2 R U' R' U R U R'
12 HTM · 12 STM · 13 QTM
3-gen
rotationless
<U,R,F>
Do U' first (AUF) on the case as drawn. · Cubemuch
R U2 R' y' R' U' R U2 R' U R
10 HTM · 10 STM · 12 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
(U2) first, then:
R U R' U' R U R' y' U R' U' R
11 HTM · 11 STM · 11 QTM
2-gen
rotation
oh
<U,R>
Do U2 first (AUF) on the case as drawn. · Cubemuch
R U2 R' y' R' U' R U R' U2 R
10 HTM · 10 STM · 12 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
R U R' U' R U2 R' y' R' U2 R
10 HTM · 10 STM · 12 QTM
2-gen
rotation
oh
<U,R>
Cubemuch
(U') first, then:
x U R' U' x' R U2 R U' R' U R U R'
12 HTM · 12 STM · 13 QTM
2-gen
rotation
oh
<U,R>
Do U' first (AUF) on the case as drawn. · Cubemuch
(U2) first, then:
R y U R U' R' y' R' U' R U R'
10 HTM · 10 STM · 10 QTM
2-gen
rotation
oh
<U,R>
Do U2 first (AUF) on the case as drawn. · Cubemuch
y' F R' U R' U' R U R2 U' F'
10 HTM · 10 STM · 11 QTM
3-gen
rotation
<U,R,F>
Cubemuch
(U') first, then:
y' R B' R' B U2 B U' B' U B U B'
12 HTM · 12 STM · 13 QTM
3-gen
rotation
<U,R,B>
Do U' first (AUF) on the case as drawn. · Cubemuch
(U') first, then:
y2 B L' B' L U2 L U' L' U L U L'
12 HTM · 12 STM · 13 QTM
3-gen
rotation
<U,L,B>
Do U' first (AUF) on the case as drawn. · Cubemuch
(U') first, then:
y L F' L' F U2 F U' F' U F U F'
12 HTM · 12 STM · 13 QTM
3-gen
rotation
<U,F,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: F' U2 F R U2 R' U R U' R'. Every algorithm above was run by our logic engine from that state and reaches "f2l-eo".