Ever heard of Sudoku? Want to improve your child's concentration, thinking? Want to make your child smarter? Then learn about Sudoku!
Sudoku, formerly known as the "Nine Palace Grid", originated in China. Thousands of years ago, our ancestors invented the Book of Luo, which is more complex than today's Sudoku, requiring that the sum of the three numbers vertically, horizontally, and obliquely equal to 15, rather than the simple nine numbers cannot be repeated. The "Nine Palace Diagram" in the ancient Chinese book "I Ching" also originated from this, so it is called "Luoshu Nine Palace Diagram". The name "Nine Palaces" has also been preserved and used to this day because of the important position of the I Ching in the history of Chinese cultural development. In 1783, the Swiss mathematician Leonhard Euler invented a game then known as "Latin Square", which was a phalanx of numbers n×n, with each row and column consisting of n numbers or letters that did not repeat. In the 1870s, Dell Puzzle Mαgαzines, an American mathematical logic game magazine, began publishing what is now known as "Sudoku", which was then called "Number Place", at which time the 9×9 81-grid number game began to take shape. In April 1984, the game "Sudoku" appeared in the Japanese game magazine Anagram Communication Nikoil (パズル通信ニコリ), proposing the concept of "independent numbers", meaning "this number can only appear once" or "this number must be unique", and naming the game "Sudoku". A former New Zealand judge of Hong Kong's High Court, Wayne Gould, stumbled upon it while traveling to Tokyo, Japan, in March 1997. He first published it in the British newspaper The Times, and soon other newspapers, and soon became popular all over the United Kingdom, after which he spent 6 years writing computer programs and putting it on the website, making the game quickly popular all over the world. Since then, this game has become popular all over the world. Later, due to the popularity of Sudoku, many similar mathematical puzzle games were derived, such as: number and killer Sudoku. China was officially introduced to Sudoku on February 28, 2007. On February 28, 2007, the Beijing Evening News Intellectual Leisure Sudoku Club (the predecessor of the Sudoku Federation sudokufederation) held a ceremony to join the World Puzzle Federation at the News Building, at which The Secretary General of the Puzzle Federation, Pete Leamister, signed the certificate, which marked that the Beijing Evening News Intellectual Leisure Club became one of the 39 members of the World Puzzle Federation, which also marked the club's entry into the international stage. It will bring more opportunities for Sudoku lovers to communicate with Sudoku lovers around the world!
Later here will be more specific introduction to Sudoku knowledge, so stay tuned! [Shy]