FYI, this problem was originally called 'What Sheep?' by the FA but later renamed 'Abracadabra' by a subsequent ascentionist. ;)
[the reason for the original name was that on the day my friend Mark - the FA - joined us to try the problem, there was a dead sheep carcass right on the approach path, which he didn't notice. When we called out to him to mind the sheep, he replied 'what sheep?' Abracadabra might be a better name to some, but it's not the correct one.]

Aha, I wondered why the pdf and ukc had different names. We found a lamb carcass on the approach yesterday - much to Heather's disgust!
Great problem nevertheless.
I liked the up and right pocket version but could get no friction off that left hand sloper yesterday.

Abracadabra was done before What Sheep, and Aberacadabra went from the back of the cave, What sheep started from the lip as I understand

Hi C, I thought this was all resolved in discussion with Mr Watson a while back, but clearly not! 'What Sheep' certainly started at the back of the recess / cave. Either way it's a very good problem - I really must get back and finish the damned thing!