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Wed, Sep 9, 2020 6:45 AM

Things You Probably Don't Know About Sudoku

Things You Probably Don't Know About Sudoku

Have you been playing the game of Sudoku for quite some time, or perhaps it recently caught your eye? While you probably know that Sudoku is a logic-based numbers game, you might not be aware that today is International Sudoku Day. Perhaps you also don’t know some interesting facts about the game. And since today is 9/9 we’re going to share with you nine facts you probably didn’t know about Sudoku. 


  • The term “sudoku” originated from Japan. In Japan, “Su” means a number, while “Doku” means only/single. And if you combine the two Japanese characters it means “only single digits.”


  • However, Sudoku did not originate in Japan. Swiss mathematician Leonhard Euler invented it which called the game “Latin Squares.” The original idea of the game is to arrange numbers in such a way that any number or symbol must occur only once in each row or column. In 1979, American architect Howard Garns called it as “Number Place” and added a rule that each region, also known as sub-grid, may only have the numbers (or symbols) occurring once. 


  • So, who introduced Sudoku in Japan? It was the Japanese puzzle manufacturing company Nikoli that was responsible for the further development and promotion of Sudoku in Japan. But the Japanese actually call it by its original name, which is “Number Place.”


  • The game became popular in the rest of the world in 2004 when Wayne Gould convinced The Times magazine in London to publish it. This was after he became a devoted enthusiast of Sudoku and spent the next six years developing a computer program that could generate Sudoku puzzles.


  • Many people mistakenly believe that Sudoku is a mathematical game, whereas it is a pure logic game which doesn’t require any mathematical skills. In fact, it can be played with symbols, letters, or pictures aside from numbers. 


  • Sudoku has interfered with a court case in Australia in 2008. Yes, you read that right! A three-month drugs trial has been aborted after the jury's forewoman admitted playing Sudoku for at least half of the trial. Read more about the story here. 


  • Regularly playing Sudoku can have health benefits from boosting your concentration and focus, preventing or easing depression, and possibly even dementia and Alzheimer's disease. Moreover, it’s good for any ages for the development of mental abilities and to keep them in good condition. 


  • There is an annual worldwide Sudoku championship which was first held in March 2006 in Lucca, Italy. The World Sudoku Championship typically consists of 100 or more puzzles solved by all competitors over multiple timed rounds.


  • In May 2015, Prime Minister Lee Hsien Loong has posted on Facebook the source code to solve Sudoku that he wrote several years ago in C++ program, urging the local tech community to review his work.


Did those facts have sparked your interest to solve a Sudoku game? 





~ Carla



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