Unlike categories, which are fixed and static, tags can have parent/child relations with each other, forming a tree-like structure that visitors may browse through. If we omitted tags that match categories, this tree-like structure would have gaps in it. If we were to keep just tags or categories, I think it would be better to keep tags. Tags are more organic and fit the nature of Chess variants better than a set of fixed categories do.
Unlike categories, which are fixed and static, tags can have parent/child relations with each other, forming a tree-like structure that visitors may browse through. If we omitted tags that match categories, this tree-like structure would have gaps in it. If we were to keep just tags or categories, I think it would be better to keep tags. Tags are more organic and fit the nature of Chess variants better than a set of fixed categories do.