I think it is by far the best to use it as the main diagram in the setup section. That is where you would put a static diagram, and I don't see any reason to place it elsewhere just because it is interactive. Before the availability of Interactive Diagrams the 'gold standard' for articles here was to have an image of the setup accompanied with the names and coordinates of the pieces, either in list or paragraph form.
I see no reason for showing the initial position twice; that is just presenting redundant information.
IMO using a different section for playing is a bad thing; people visiting this website would expect they can play against the main diagram, as this is how most articles have it, and might not look further down if the main diagram is static.
BTW, it is pretty annoying that tables suddenly have a different background color than the page as a whole. It seems the standard style sheets are messed up.
I think it is by far the best to use it as the main diagram in the setup section. That is where you would put a static diagram, and I don't see any reason to place it elsewhere just because it is interactive. Before the availability of Interactive Diagrams the 'gold standard' for articles here was to have an image of the setup accompanied with the names and coordinates of the pieces, either in list or paragraph form.
I see no reason for showing the initial position twice; that is just presenting redundant information.
IMO using a different section for playing is a bad thing; people visiting this website would expect they can play against the main diagram, as this is how most articles have it, and might not look further down if the main diagram is static.
BTW, it is pretty annoying that tables suddenly have a different background color than the page as a whole. It seems the standard style sheets are messed up.