optimal is (u F2 u') b' (u F2 u') bWhat is the best possible commutator for this,
http://i.imgur.com/1a5odl.jpg" title="Hosted by imgur.com
I'm doing U R2 (Li' U2 Li E' Li' U2 Li E) R2 U'
[Where 'i' With the L means inner layer L (sorry I'm not so familiar with the notation)]
So I know this is quite bad and there is surely a better commutator with less moves to solve that.Thanks
or in comm notation [u F2 u', b']
or in your notation (Ui F2 Ui') Bi' (Ui F2 Ui') Bi
or in your notation and comm notation [Ui F2 Ui', Bi']