Algorithm Walter Randelshofer 2008
F' NL2 F R2 NB U' NB' TD' NB U NB' TD R2 F' NL2 F2
R U' MR2 U R' U' MR2 U F'
(+ufr) (25 btm, 33 ftm, 44 qtm)
Algorithm Per Kristen Fredlund 2015
R NB U2 NB' NU' NB U2 NB' TU
F' VU2 F U' F' VU2 F R'
(+urf) (17 btm, 24 ftm, 30 qtm)
Note
Impossible pattern.