On Tue, Jun 19, 2018 at 3:52 AM, Marcel Crasmaru <crasma...@gmail.com> wrote: > I've eventually managed to create a problem that should show a full > reduction from a Robson problem to Go - I hope is correct. > > The Problem: > https://drive.google.com/file/d/1tmClDIs-baXUqRC7fQ2iKzMRXoQuGmz2/view?usp=sharing > Black just captured in the marked ko. How should White play to save > the lower group?
It looks like White needs to hold the middle ko and either top or bottom ko to make the ladders work. White can start one ladder as a ko threat to take back the middle ko, and black will then take the top ko. Now if white (possibly using another ladder ko threat) takes back either top or bottom ko, Black can retake the middle one and White has made no progress. So it looks like White is doomed?! regards, -John _______________________________________________ Computer-go mailing list Computer-go@computer-go.org http://computer-go.org/mailman/listinfo/computer-go
