This problem is from the Japanese tsumego collection, 秀行創作詰碁傑作集 or ‘Collection of Shūkō’s tsumego masterpieces’ by Fujisawa Hideyuki (whose first name can also be read as ‘Shūkō’).
I have received some feedback that the Sunday problems have been too difficult, so this week I tried to pick a slightly easier problem. Still, in my opinion it is not fun if the problem can be solved at a glance, so I tried to pick a problem that has many branching variations but does not involve very complicated techniques.
Black to play.
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