Curling is our strange quadrennial winter sports obsession. Depending on one’s taste, it’s either a compelling chess match on ice, or glorified shuffleboard with no proper place in a global sporting spectacle. But once the opening ceremonies of the PyeongChang 2018 Winter Olympics begin on Feb. 9, you — or someone you encounter regularly — will suddenly start caring about curling. You know, that winter Olympic sport with the stones and the brooms and that dartboard-looking-thing on the TV.