Jan van Koningsveld
Encyclopedia
Jan van Koningsveld is a mental calculator
. He is the champion of Extracting Square Roots of 2004 and 2008 as well as the champion of Calendar Calculation of 2008 at the Mental Calculation World Cup
s. In addition, he finished second in the overall rankings of 2004, 2006 and 2008.
During the first MEMORIAD 2008, the Olympiad for Mental Calculation and Memory held in Istanbul, Turkey, Jan van Koningsveld won the gold medals in the categories Multiplication as well as Calendar Calculation. After the competition he was also able to even the world record in the category Calendar Calculation by calculating 56 days of the week (range 1600–2100) in 1 minute.
Jan van Koningsveld also held the world record for multiplying two five-digit numbers. He solved ten tasks correctly in 3:06 minutes on 25 November 2005. That record was broken by Marc Jornet Sanz during world record attempts at the 2010 Mental Calculation World Cup
Mental calculator
Mental calculators are people with a prodigious ability in some area of mental calculation, such as multiplying large numbers or factoring large numbers...
. He is the champion of Extracting Square Roots of 2004 and 2008 as well as the champion of Calendar Calculation of 2008 at the Mental Calculation World Cup
Mental Calculation World Cup
-Mental Calculation World Cup 2004:The first Mental Calculation World Cup was held in Annaberg-Buchholz, Germany on 30 October 2004. There were 17 participants from 10 countries.The World Cup involved the following contests :...
s. In addition, he finished second in the overall rankings of 2004, 2006 and 2008.
During the first MEMORIAD 2008, the Olympiad for Mental Calculation and Memory held in Istanbul, Turkey, Jan van Koningsveld won the gold medals in the categories Multiplication as well as Calendar Calculation. After the competition he was also able to even the world record in the category Calendar Calculation by calculating 56 days of the week (range 1600–2100) in 1 minute.
Jan van Koningsveld also held the world record for multiplying two five-digit numbers. He solved ten tasks correctly in 3:06 minutes on 25 November 2005. That record was broken by Marc Jornet Sanz during world record attempts at the 2010 Mental Calculation World Cup
Mental Calculation World Cup
-Mental Calculation World Cup 2004:The first Mental Calculation World Cup was held in Annaberg-Buchholz, Germany on 30 October 2004. There were 17 participants from 10 countries.The World Cup involved the following contests :...
External links
- http://memoriad.com/ MEMORIAD
- http://www.recordholders.org/en/list/memory.html Memory and Mental Calculation World Records
- http://www.recordholders.org/en/events/worldcup/index.html Mental Calculation World Cup Site