XuanXuanGo

XuanXuanGo is a multi-featured Go program that is capable of game editing and reading, life-and-death problem practice, joseki, computer Go and network Go. From version 5.0, XuanXuanGo boasts its own artificial intelligence and can solve life-and-death problems (72% of all Go problems!)
Interview with the author by Alexandr Dinerchtein: http://rusgo.org/XuanXuanGo/