Algorithm Ronald F. Turner-Smith 1981
TB TU TR' TL' TU TB TL' TR' TB TU TR' TL'
(rfl,ldr) (rdf,lfd) (12 ltm, 12 ftm)
Algorithm Walter Randelshofer 2015
TL TU TL TB' TR TU' TL TB TR'
(rfl,ldr) (rdf,lfd) (9 ltm, 9* ftm)
Note
Impossible Pattern.