This is neat! I was working on something similar recently: https://github.com/blevinstein/chess_assistant/blob/master/screenshot-2015-02-04.png https://github.

This is neat! I was working on something similar recently: https://github.com/blevinstein/chess_assistant/blob/master/screenshot-2015-02-04.png https://github.com/blevinstein/chess_assistant/blob/master/s... I had been thinking about ways to analyze the graph of "threats", so I focused on which pieces were threatening which. I wanted to eventually extend this to also include which pieces were threatening which squares, but never got that far.