“I noticed this Numberphile video about the game ‘Amazons’ (and featuring the legendary Elwyn Berlekamp) uses Go stones to mark off borders during game play and makes a reference to Jujo Jiang 9p,” writes Daniel Gentry. “I have also had some success in using this game as a tool for teaching new players the value of controlling territory as a separate concept from attacking the opponent's pieces.”
https://www.youtube.com/watch?v=kjSOSeRZVNg&t=