Xuanxuan Qijing Problem 230 / Attempts

White to play  

AVAVT: I think is the solution here. The best Black can do is a seki in gote by playing a:

Seki  

Other answers will let White kill.

White to play  

Herman: My instincts are screaming at me that must be the solution :-D

What about this?  

Dave: Maybe I am blind but I do not see how White follows up here. eliminates one of the key defects in Black's position.

White to play  

unkx80: I think this should be right.

White to play  

AVAVT: Hm.. yeah that looks like the solution.

This problem is pretty cool. At the first glance, there're so many defects in Black's shape that you think these stone are so dead already no matter where you play. But when you actually try to kill, it's not that easy :D

White to play  

a and b are vital points in this kind of shape, I should've checked both >.<