That’s Numberwang! - 15x15

I first created the grid and fill for this puzzle way back in October, but due to its unusual theme I doubted anyone would want to publish it. Still, every time I’ve opened it up since then I’ve still liked it, and with Pi Day recently passed it seemed appropriate as a belated celebration of numbers and mathematics. What’s Numberwang you ask? Only a game show starring none other than Oscar winner Olivia Colman. If you haven’t heard of 13-Down, be sure to look it up after and give it a listen.