Beginner Exercise 221 / Attempts

Failure  

This is a ko and Black has two eyes in the corner. White can do better.

White cuts.  

(6 at ) can't be at because then at would cut. This is very bad for black because white makes a B2 Bomber. (BTW in case you couldn't tell: that's a joke; it's a hideous shape)

unkx80: Haha... Although I have set two problems with B2 Bomber in mind, I did not have the B2 Bomber in mind for this problem.

Black lives in the corner  

I think that at a gives white more options, because then b would threaten to kill.

Success?  

What about this? There are many variations, but it seems that White can restrict Black to one eye on the right and prevent Black from connecting out. For example, if at a, then at b; if at c, then at d; and so on.