What's inside one of those magic chess boards?

Square Off is a crowdfunded chess board that uses a computer and magnets to move pieces physically while playing a human opponent. YouTuber What's Inside? does a teardown to see how it works.

There must be some rule that YouTubers are not allowed to exercise even the most rudimentary forms of workplace safety, particularly eye protection, even for their children.

What's inside a Magic Chess Board? (YouTube / What's Inside?)