Editing Mental calculation (section)

===Competitions===
====World Cup====
The [[Mental Calculation World Cup]] is an international competition that attempts to find the world's best mental calculator, and also the best at specific types of mental calculation, such as addition, multiplication, square root or calendar reckoning. The first Mental Calculation World Cup <ref name=MCWC>{{Cite web|url=http://www.recordholders.org/en/events/worldcup/|title=Mental Calculation World Cup - the World Championship for Mental Calculators|website=www.recordholders.org}}</ref> took place in 2004. It is an in-person competition that occurs every other year in Germany. It consists of four different standard tasks --- addition of ten ten-digit numbers, multiplication of two eight-digit numbers, calculation of square roots, and calculation of weekdays for given dates --- in addition to a variety of "surprise" tasks.<ref name=MCWC/> The last edition was organized in September 2024 and won by [[Aaryan Nitin Shukla]], who successfully defended his title to become two time World Champion.

====Mental Calculation & Speed Reading Olympiad====
The [[Mind Sports Olympiad]] has staged annual world championships since 1998.

==== Memoriad – World Memory  ====
The first international Memoriad <ref>[http://www.memoriad.com/ Memoriad - World Mental Olympics]</ref> was held in [[Istanbul]], Turkey, in 2008.
The second Memoriad took place in [[Antalya]], Turkey, on 24–25 November 2012. 89 competitors from 20 countries participated. Awards and money prizes were given for 10 categories in total; of which 5 categories had to do about ''Mental Calculation'' (Mental addition, Mental Multiplication, Mental Square Roots (non-integer), Mental Calendar Dates calculation and Flash Anzan). The third Memoriad was held in Las Vegas, USA, from November 8, 2016 through November 10, 2016.

====Mind Sports Organisation====
The [[Mind Sports Organisation]] recognizes six grandmasters of mental calculation: [[Robert Fountain (mental calculator)|Robert Fountain]] (1999), [[George Lane (mental calculator)|George Lane]] (2001), [[Gert Mittring]] (2005), Chris Bryant (2017), [[Wenzel Grüß]]  (2019), and Kaloyan Geshev (2022), and one international master, [[Andy Robertshaw]] (2008). In 2021, [[Aaryan Nitin Shukla]] became the youngest champion ever at an age of just 11 years.

====World records====
[[Shakuntala Devi]] from [[India]] has been often mentioned on the [[Guinness World Records]]. [[Neelakantha Bhanu Prakash]] from [[India]] has been often mentioned on the [[Limca Book of Records]] for racing past the speed of a calculator in addition.<ref>{{cite web|url=https://www.thehansindia.com/hans/young-hans/i-love-to-be-quicker-than-anyone-else-bhanu-prakash-526944|title=I love to be quicker than anyone else, Hans India, May 2019|first=Arti|last=Adke|date=6 May 2019 |access-date=2020-08-17|archive-date=2020-12-09|archive-url=https://web.archive.org/web/20201209095613/https://www.thehansindia.com/hans/young-hans/i-love-to-be-quicker-than-anyone-else-bhanu-prakash-526944|url-status=live}}</ref> Sri Lankan-[[Malaysian people|Malaysian]] performer Yaashwin Sarawanan was the runner-up in 2019 ''[[Asia's Got Talent]]''.