ELS E4 (48)
OLS-FE
Spot the flipped edge in the slot, then read the last layer's orientation.
Your status
Algorithms (2)
Rw y Rw U' B U' Rw B Rw' U B' Rw' B'
My choice
12 HTM · 12 STM · 12 QTM
3-gen
rotation
<U,R,B>
One hand: needs L, B, S or E
Cubemuch
y2 L B L' U L' B L B' L U' B' L'
12 HTM · 12 STM · 12 QTM
3-gen
rotation
<U,L,B>
One hand: needs L, B, S or E
Cubemuch
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: B Rw B U' Rw B' Rw' U B' U Rw' y' Rw'. Every algorithm above was run by our logic engine from that state and reaches "f2l-oll".