Andy Pierce: I've been experimenting with the severe 44 point double high approach, getting this position by transposition by opening on the 6-4 point, after which my opponents invariably take the 4-4 point. Joseki after the double approach for white is any of the a points, but how to continue effectively if white plays here?
If the ladder going southeast works for black, then after white is in trouble. What if the ladder is broken?
Here's one possibility I came up with. It resembles the 5-4 point joseki shown below, except white gets more territory and looks strange, so I think black must be able to do better.
unkx80: and is common. The corner is still somewhat open.