GokyoShumyoSection4Problem11/Solution
![[Diagram]](../../diagrams/4/a69c11e1bc13fc6f589708545ffac116.png)
Exploiting the corner
White can't approach at a.
![[Diagram]](../../diagrams/44/927be87f21111952be7018457bbcd7e8.png)
White's try fails
Note that
at a allows white to make ko by playing at b; and
at b loses to White c.
For the Addendum:
![[Diagram]](../../diagrams/13/2cabaee7f2a132d0a65e51971d0758f7.png)
Not a clean problem
The earlier problem lacked one stone each and White gets a desperate approach ko (probably unintended by the composer).