GoGameGuru released its problem collection under CC-BY-NC-SA
Posted: Thu Jun 04, 2015 7:03 am
Available on GitHub
https://github.com/gogameguru/go-problems
https://github.com/gogameguru/go-problems
It looks like they are also planning to release commented games under CC-BY-NC-SA as well.
See this repository on GitHub:
https://github.com/gogameguru/commented-go-games
Currently, only one game has been added to the repository, but since that happened only about 5 hours ago, it seems that preparing and uploading them is still a work in progress.