What is something interesting about chess that I could open and close a speech with?

I'm doing a demonstrative speech on how to play chess this morning. I need to open my speech with something captivating (the "grabber") and close with something--the same thing, something else--suggesting unambiguously the closing of the speech (the "leaver").





I plan on opening the speech with Iran's relationship with chess. I can't think of a more clever idea. I don't yet have a "leaver."





Any thoughts would be really appreciated.|||That crazy chess genius who just died and the chess playing computers both come to mind. They had one on Sarah Connor Chronicles, too. It destroys the world or something.