Great to hear the demo is out.
How can I find the demo?

For sure, it would be Mindsports(MIND)
It is one of its kind
It is not some copycat crap ICOs

Free registration: https://mindsports.us17.list-manage.com/subscribe/post?u=e4937b43e4839f0abadd688e9&id=6020dc3059

Official Page: https://www.mindsports.io/

Announcement page: https://bitcointalk.org/index.php?topic=2275215

Telegram Group: https://t.me/mindsportsio

I met with the project leader - Island Kon just yesterday in Hong Kong.
I am registering here just to say thanks to him.
He is one of the nicest people I have ever met. He is also very knowledgeable and patient in explaining to me.
He also showed me a ready-to-play demo program where I can actually play chess against a cpu opponent.
I am invested in this project and hope all would go well and it definitely will I believe, because the project is led by all the great people.