The song from the musical “Chess”?
I'm afraid that is out of my ken, goodman.
I'm not a hundred percent sure on the chess thingy. I think it's an allusion somehow to the overall war between good and evil, nationalist vs socialist, spy vs spy, Control vs. Kaos, white hat vs black hats, eloi vs morlock, etc. Other people know more than me on that one. Many good theories out there.