Quality problem! From the sitter, do you go out with your left hand to the undercut? From the sitter, I was going up with my right and wrapping the arete, then getting the left heel on - didn't work..

Yeah used the undercut. From the sitter, right toe on quite high, rock up, lh to small undercut, slap rh to the arete, sort your feet, slap again, move lh to higher undercut under the roof, slap again, cross through with lh to top. Yeah awesome problem!

Sorry left toe on quite high.

That makes more sense, I think trying to do the moves static on a problem called 'slapper' was probably the wrong approach..
Next time!!