excellent work!
It's a great goal to carry out this kind of proyects, especially with an artificial intelligence that plays tic tac toe and can learn from itself, it migth sounds ridiculous but it doesn't, it's amazing.
Imagine all the possibilities that gives you to develop your own AI
I hope you continue with your project of making a real neural network and im waiting for that article. Also thanks for let me know your post in your memo
Good luck!