Jon Broughton:Sit start on right hand side pull and left hand on arete. Different betas exist but one key piece for me was finding the right spot to toe hook when reaching for the sloper out left. The pocket and undercling by the first sloper can also both be helpful.
Really fun problem! Other problems on this boulder are eliminates or maybe a bit contrived, this is the pure line, if you walked up to this boulder knowing nothing about the guide this is the obvious line.