This problem is taken from the Nihon Ki-in web site (http://www.nihonkiin.or.jp/news/2012/12/15_1.html). The solution is also found on the web site, but I chose not to give the link here. Please note: ko is not a solution, even though one side may lack ko threats.
Author unkx80 Created 2013-01-07
Difficulty 6 dan (history) Source Nihon Ki-in web site (http://www.nihonkiin.or.jp/news/2012/12/15_1.html)
AVG solve time 85 sec Stars 3  (2 votes)
User attempts 135 / 467 Collections N/A
Genre life and death Your attempts N/A
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Created 2013-01-07
Source Nihon Ki-in web site (http://www.nihonkiin.or.jp/news/2012/12/15_1.html)
Stars 3  (2 votes)
Collections N/A
Your attempts N/A