The math board.
That's an example of one that's been renamed.
Yep, we renamed 'riddles' to 'math'.
Hooray for cheating!
But yeah, the Math board is the only board that is technically "new". But we eliminated at least 3 other boards from the main page, so we still ended up better off. And it won't be around forever, unless it stays good and active, Ender wanted a project-board, so ender's getting a project-board