The origin of Sudoku, what is Sudoku?

Sudoku is a logical number puzzle puzzle game that is not only very interesting, but also very good for our brains. Adults often play Sudoku to keep their brains young. Children often play Sudoku, which can exercise their brains and improve their ability to think logically.

Elderly people often play Sudoku, which can put the brain in a state of excitement, which is beneficial to the health of the body. Sudoku (Sudoku in Japanese) was introduced to Japan by the McKee Kaji in front of you. The mustache is 52 years old and the president of Nikoli, the Japanese authority on digital-filled game publishing.

I don't know if it's to be on par with Walter Mackey, so the English name is also called McKee. Sudoku is a Japanese kanji that he coined, and the game is summed up in two kanji, and the original Japanese meaning of Sudoku is that every number is celibate (su means number, doku means celibacy). McKee majored in literature from college, and after graduating from college, he worked in a printing shop when a friend brought back a digital filling magazine from the United States, which published the year McKee and two friends co-founded Nikoli, which specializes in publishing digital filling games, when he was only 29 years old.

Nikoli is not located in a commercial center, nor in Kanda, where the publishing house is concentrated, but in Tokyo. For more than 20 years, he has been publishing digital games, including quarterly magazines and books, and has also provided hand-designed sudoku to newspapers. A simple numbers game turned into big business in McKee's hands, but his longtime friend and colleague, Mr. Jimmy Goto, said that McKee was rarely seen in the office:

He's a romantic! 」。When it comes to the secret of the company's success, he believes that the most important people are, and what other assets are not important:

We value team spirit and our colleagues are very close-knit and like family.

The special feature of Nikoli's Sudoku is that all the topics are designed by the author himself, not set by a computer, and the difficulties of the participants are already thought out in advance, so it is human to play and not too tricky and discouraging.

The Sudoku craze has swept the world, and mainstream newspapers in Australia, Belgium, France, Spain, Italy, Malaysia, India, Taiwan and other places have appeared**.

Sudoku (Japanese: Sudoku, sūdoku) is a mathematical puzzle game that originated in Switzerland at the end of the 18th century and was invented by the famous mathematician Euler, and later developed in the United States and developed in Japan. The puzzle is a square shape of a nine-square grid (i.e., 3 squares wide and 3 blocks high), and each grid is subdivided into a nine-square grid.

In each small nine-square grid, fill in the numbers from 1 to 9 respectively, so that the numbers in each column and row of the entire large nine-square grid are not repeated.

Sudoku's departure from Japan to become a popular game in Britain today originated from Wayne Gould, a former judge of the High Court of Hong Kong. In 2004, while traveling in Japan, he discovered the magazine's game and brought it back to London to pitch it to The Times and was accepted. The British "Daily Mail" also started three days later**, making Sudoku officially a craze in the UK.

Other countries and regions have also begun to ** Sudoku due to its influence. At this point, the wind of Sudoku quickly blew all over the world, and its popularity was no less than Apple's iPod

Sudoku is a mathematical game that originated in 18th-century Switzerland. It is a logic game that uses paper and pen to calculate. Players need to deduce the hidden numbers of the remaining spaces of all the stove socks according to the known numbers on the 9 9 board, and meet the requirements of each row, each column, and each thick line (3*3) The numbers in the palace contain 1-9 and do not repeat.

The Sudoku board is a nine-house board, and each house is divided into nine sub-squares. In these 81 grids, certain known numbers and solution conditions are given, and the numbers from 1 to 9 are filled in the other spaces using logic and reasoning. Each number from 1 to 9 appears only once in each row, column and house, so it is also called "nine-square grid."

This is window Sudoku, but the rules are not strictly described, so it is misleading.

Window Sudoku includes "Sudoku with a 9-square window to a shirt Sudoku" and "Sudoku without a 9-square window".

There is a nine-square window Sudoku rule: each row column is 1 9, and the 4 blue 3 3 squares are also 1 9, and they are not repeated.

There is no nine-square grid window Sudoku rule: each row column is 1 9, 4 blue chain colors 3 3 grids respectively the nuclear cavity is also 1 9, do not repeat.

The word "Sudoku" comes from Japanese and means "a single number" or "a number that appears only once". In a nutshell, it's a game of numbers. But the concept did not originally come from Japan, but from the Latin square, which was invented by the 18th-century Swiss mathematician Euler.

The rules of the game are very simple, 9x9 grids, there are already a number of numbers, the other houses are blank, players need to deduce what number is in the remaining space according to the logic, so that each row and each column has a number from 1 to 9, and each small nine square grid also has a number from 1 to 9, and a number can only appear once in each row and column and each small nine square. Resources.

1. The number of numbers used can be 4 words Sudoku, 6 words Sudoku, 9 words Sudoku, 16 words Sudoku, 25 words Sudoku, etc.;

2. The categories of restricted areas can include diagonal Sudoku, extra area Sudoku, rainbow Sudoku, etc.;

3. There is a sawtooth Sudoku when the palace shape changes; Multiple Sudoku are superimposed, such as Siamese Sudoku, Samurai Sudoku, Super Sudoku, and so on;

4. Replace known numbers with other elements, such as alphabet Sudoku, dice Sudoku, digital Sudoku, etc.;

5. Use the relationship between the sum or product of the numbers in the cell to have killer Sudoku, border Sudoku, arrow Sudoku, Rubik's Cube Sudoku, arithmetic bridge Sudoku, etc.;

6. Use the relationship between the numbers in adjacent cells to include continuous Sudoku, unequal Sudoku, fortress Sudoku, XV Sudoku, black and white dot Sudoku, etc.;

7. The number attributes of the cell limit include odd and even Sudoku, large, medium and small Sudoku, etc.;

8. Use Sudoku to suggest numbers such as edge observation Sudoku, skyscraper Sudoku, etc.;

9. It is forbidden to have Sudoku without fate and without horse in the same number position;

10. Non-square Sudoku has ring Sudoku, cube Sudoku, hexagonal Sudoku, bee stuffy tomb and fierce nest Sudoku, etc.;

11. Those who need to cooperate with multiple Sudoku conditions to solve the problem include three-in-one Sudoku, twin Sudoku, etc.