Life In 19x19

You forgot one:

I did some checking but could not find any corner shapes where:

1. Black is completely surrounding an area in the corner. (closed formation)
2. The black formation has no cutting points
4. The area that black surrounds does not contain white stones
5. The area contains 11 or more empty points.
6. White can make the shape dead or force black into a seki.

so I wrote something for this on the Corner shapes page.

There is now also a Common Corner shapes page that only contains the more commen one . (although i a wondering should the rectangual six and eight shapes be on this page.)

And as with knots you sometimes need a lasso. (that knot was not on your list)