interesting: a dynamic view of the top-10 champions since 1974 (you tube)

So as to think about something else in this dark day...
This dynamic video shows the day-to-day evolution of the top 10 go players since 1974...

Interesting to see the emergence of China and Korea since 1990...(and sudden AlphaGo's appearance at 2nd place a few days ago)...

https://www.youtube.com/watch?v=oRvlyEpOQ-8