9th Mental Calculation World Cup 2020

This is a post regarding the forthcoming Mental Calculation World Cup in 2020

Also a few more links about this competition:

Its wiki : https://en.wikipedia.org/wiki/Mental_Calculation_World_Cup
For anyone with a FB page, a fanpage of the competition can be found here: https://www.facebook.com/mentalcalculationworldcup
An intro article on the purpose of this competition, in UK’s Guardian here:https://www.theguardian.com/science/alexs-adventures-in-numberland/2012/oct/10/mental-calculation-world-cup
And some videos with highlights from previous competitions:
https://www.youtube.com/watch?v=LzgaRkBjWMQ (MCWC 2014)
https://www.youtube.com/watch?v=3pJXfQCe6yM ('14 closing ceremony)
https://www.youtube.com/watch?v=3yhyw_bsDjg (MCWC 2012)
https://www.youtube.com/watch?v=rPTKZ4PLkMc ('12 champion doing Anzan)
https://www.youtube.com/watch?v=Mq_6b6Yo0d4 (MCWC 2010 champion)
https://www.youtube.com/watch?v=jz9--bTcGGo (MCWC 2008)
https://www.youtube.com/watch?v=o25DtVKj63U (MCWC 2006)
https://www.youtube.com/watch?v=vfCy43eDYyI (MCWC 2004)

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