Confused: This problem is number 178 (level 2) of the Baduk Academy problems on
http://gobase.org.
The proposed solution is . However, I'm at loss finding the proper sequence to kill the group when White replies at
.
I'd be very grateful, if someone could give me a hint.
Dieter: The only thing I can think of is that there is a black stone intended at a. It could be a genuine mistake, because this position here is already enough to create damezumari for at b.
Confused: Thank you, Dieter.
Bill: Most puzzling. Dieter's suggestion makes sense, but....
In this position the straightforward kills. No need to get fancy.
Anyway, there seems to be a mistake somewhere.