I'm not a fan of the BBC's the Changing World. The show has interesting topics but the episodes I've caught have an annoying habit of almost saying something profound and insightful then veering off at the last minute. This tendency to be profundity adjacent is particularly notable because, on KPCC, Changing World airs a couple of hours after This American Life, a show with an extraordinary ability to uncover the genuinely important aspects of a complicated story.
The criticism certainly holds for this episode on chess. Repeatedly, I found myself caught up in an interesting thread only to have it end right before it got to the good part. Still, they were interesting threads and if your interests include abstract strategy games and their role in fields like education, you should probably check this out.
http://www.thechangingworld.org/archives/2010/44.php