Hi everyone.
I thought it would be worth letting people know that I've completed the What Is a Sudoku report, and handed it over to the WPF board to do whatever they want with it.
The original report can be found here:
https://docs.google.com/document/d/1gl2 ... xzxxq2id3f
The WPF also have their version here:
http://www.worldpuzzle.org/archive/repo ... orts/2020/
This handover and publication actually happened quite a while ago. In the meantime I have written up some concluding thoughts in the following blog post, which I will link to rather than repost:
https://tcollyer.blogspot.com/2020/05/t ... udoku.html