Life In 19x19

I guess black might play the marked intersection next... Maybe this isn't as good for white because it's "pushing from behind"?

It just seems that black's shape is so nice with in the first diagram.

Anyone have ideas on this?

I wonder if this is one of those positions where, once black's ...

At move 238 in post#57 game, you played C2. Why did you not play D1? Seems he snaked into your corner taking real estate. This looks like the difference in the game, which you lost by 3.5. There must be a trap I do not see, or some other way Black would take more of a share of that lower left corner ...