The chess mechanics are implemented. Except from the two type of draws. They are very rare so I consider them low priority at this point. Instead I'm now cleaning up the code and improving the rudimentary AI I had in place.
I generally prefer spending the tokens on features that make the game feel more friendly and responsive because the AI probably will never win any tournaments. So for example, while the AI is calculating the best move, it will move the cursor to the most promising piece it currently considers. It makes the waiting time seem shorter but also provides some insight into the AIs "thinking" process.
