The Sudoku puzzle became widely popular in Japan after less than a decade from when it was introduced. The name Sudoku implies that "the digits can only occur once on the row or column". Records state that the Sudoku puzzle was introduced to Japan in 1984. The name Sudoku was given to the game in Japan. Howard Garns published a 9x9 version of the puzzle in Dell newspaper column for games, the puzzle was tagged “Number Place." This was because the earliest versions of the puzzle came in numbers. This led to the development of the Sudoku puzzle as we see it today. Later, an architect from Indianapolis named Howard Garns added a rule of restraint to the Latin Squares, the rule emphasizes that each number or symbol can only appear once in the given space. These squares were used to solve statistical problems. The Latin Square ensures only one number or symbol can appear once in each column or row. History has it that a Swiss Mathematician, Leonhard Euler, in the 18th century developed what he called "Latin Squares". Jana Tylova, a 31-year-old accountant from the Czech Republic, defeated 84 other puzzle solvers from 22 countries in the two-day competition.Many people would think the Sudoku game originated from an Asian country, Who will not think so when you go by its name? Sudoku is pronounced soo-doe-Koo. The first sudoku world championship was held in March 2006 in Lucca, Italy. In May 2006 Time magazine listed Gould as one of the world’s 100 most influential people. By 2006 hundreds of sudoku books had been published, and addicts could be seen everywhere-in offices, on buses and trains, and on the beach-working with paper and pencil or puzzling over interactive sudoku that had been adapted to mobile phones, video games, and the Internet. Other British newspapers followed suit, and within a few months sudoku had become a worldwide phenomenon, with the puzzles appearing in newspapers from the United States to Finland, South Africa to Costa Rica, and Israel to Singapore. Seven years later he sent some of his puzzles to The Times of London, which printed its first one on Nov. In 1997 New Zealander Wayne Gould, a retired judge from Hong Kong, came across a book of sudoku puzzles in Tokyo and decided to develop computer programs for generating them. In spite of the puzzle’s popularity in Japan, the worldwide sudoku explosion had to wait another 20 years. They next appeared in 1984 in a magazine in Japan, where they acquired the name sudoku (abbreviated from suuji wa dokushin ni kagiru, meaning “the numbers must remain single”). The puzzle, however, raised interesting combinatorial problems for mathematicians, two of whom proved in 2005 that there are 6,670,903,752,021,072,936,960 possible sudoku grids.Īlthough sudoku-type patterns had been used earlier in agricultural design, their first appearance in puzzle form was in 1979 in a New York-based puzzle magazine, which called them Number Place puzzles. Sudoku is based entirely on logic, without any arithmetic involved, and the level of difficulty is determined by the quantity and positions of the original numbers. The object of the puzzle is to fill the remaining squares, using all the numbers 1–9 exactly once in each row, column, and the nine 3 × 3 subgrids. In its simplest and most common configuration, sudoku consists of a 9 × 9 grid with numbers appearing in some of the squares. Sudoku, also known as Su Doku, popular form of number game.
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