Algorithm
(MB2 MR2)2
U' (MB2 MR2)2 U (10 btm, 18 ftm, 34 qtm)
Algorithm Walter Randelshofer 2013
U2 WR MD2 WR' U' WR MD2 WR' U' (9 btm, 15 ftm, 20 qtm)
Algorithm Walter Randelshofer 2011
MR' F' MR MB2 MR' F MR MB2 (8 btm, 14 ftm, 18 qtm)
Algorithm Per Kristen Fredlund 2014
ML2 D' MR2 D ML2 D' MR2 D (8 btm, 12 ftm, 20 qtm)