I would also personally use 'Geometry' rather than 'Board'. It's a bit more general.
I think Board is a bit more general, because it can also be used for board size, board dimensions, or other board differences like having terrain.
And a game could be both 3-D and Rectangular, or both 3-D and Hexagonal ...
There is no requirement that a page should get only one child tag with a particular parent. A page could be tagged both Board:3D and Board:Hexagonal, for example. I have been tagging some of my own games with multiple Rules: children tags, which is the same principle.
I have also sped up tagging of similar games by including a copyable string of all the tags a user has added to a page. I have been able to copy and modify strings from one game to quickly tag others.
I think Board is a bit more general, because it can also be used for board size, board dimensions, or other board differences like having terrain.
There is no requirement that a page should get only one child tag with a particular parent. A page could be tagged both Board:3D and Board:Hexagonal, for example. I have been tagging some of my own games with multiple Rules: children tags, which is the same principle.
I have also sped up tagging of similar games by including a copyable string of all the tags a user has added to a page. I have been able to copy and modify strings from one game to quickly tag others.