Published a week ago, already with 232.410 views and 855 comments, this is not your average chess video.
How many chess games are possible? (12:10) 'Dr James Grime talking about the Shannon Number and other chess stuff.'
The last minute-and-a-half is publicity for a web service. For more about chess and math, see Chess from Wolfram MathWorld
Several chess blogs have posted about the recent announcement that AP makes one million minutes of historical footage available on YouTube. For a search on the videos, see chess : AP Archive.