ELS R1
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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 (9)
R U' Rw' U R U R' U' R' Rw
My choice
10 HTM · 10 STM · 10 QTM
2-gen
rotationless
oh
<U,R>
Cubemuch
R U' L' B R B R' B' R' L
10 HTM · 10 STM · 10 QTM
rotationless
<U,R,L,B>
Cubemuch
(U) first, then:
M' U' R U' R' U R U R' U' M
13 HTM · 11 STM · 13 QTM
3-gen
rotationless
oh
<U,R,M>
Do U first (AUF) on the case as drawn. · Cubemuch
(U) first, then:
R U2 R U2 x U R' U' x' U2 R2
9 HTM · 9 STM · 13 QTM
2-gen
rotation
oh
<U,R>
Do U first (AUF) on the case as drawn. · Cubemuch
(U) first, then:
y' R' U' R U' R' U R y R U R'
10 HTM · 10 STM · 10 QTM
2-gen
rotation
oh
<U,R>
Do U first (AUF) on the case as drawn. · Cubemuch
(U2) first, then:
y Lw U' x Lw' U Lw2 U Lw' U' Lw' U'
10 HTM · 10 STM · 11 QTM
2-gen
rotation
<U,L>
Do U2 first (AUF) on the case as drawn. · Cubemuch
(U2) first, then:
y' R' U' R y U2 R U' R' U R U R'
11 HTM · 11 STM · 12 QTM
2-gen
rotation
oh
<U,R>
Do U2 first (AUF) on the case as drawn. · Cubemuch
(U') first, then:
z' B Lw2 U2 B2 U' B2 U' Lw2 B'
9 HTM · 9 STM · 14 QTM
3-gen
rotation
<U,L,B>
Do U' first (AUF) on the case as drawn. · Cubemuch
(U) first, then:
y' Lw U' Lw' y U' Lw y U' Lw' U Lw U
10 HTM · 10 STM · 10 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: L' R B R B' R' B' L U R'. Every algorithm above was run by our logic engine from that state and reaches "f2l-eo".