I'd elaborate on the source, but I can't read Chinese. I actually got this one wrong when I did it. Comment if there's more to say, or if you disagree with my reasons, because I'm not too certain about it (I'm sure about the answer though).
Author dischord Created 2009-03-30
Difficulty 29 kyu (history) Source Chinese problem book
AVG solve time 17 sec Stars 3.17  (23 votes)
User attempts 10689 / 13195 Collections Side based, Multiple Choice
Genre fuseki Your attempts N/A
Similar problems
Created 2009-03-30
Source Chinese problem book
Stars 3.17  (23 votes)
Collections Side based, Multiple Choice
Your attempts N/A