[nightnight]

The chess pieces don't have to be recognized via a neural network. You just need to track the delta of fields with chess pieces between moves and then you know which piece moved to which field.

So, just an optical recognition of empty field vs used field is required. This works since the starting position of chess pieces is always the same.

This way old inductive chess computer from Mephisto worked (the high-end models had inductive fields).

[cyborgx7]

I don't think this is being built to follow along a game in progress (though that would be an interesting application) but rather capture a current position and transfer it to a digital representation, for example for computer analysis. So there is no delta to track.