What does Matsudoku mean What does Sudoku mean

In addition to the rules of ordinary Sudoku, horse steps are also required.

The values are different! Fill in the blank space from 1 to 9, except that each row, column, and the number in the palace are not repeated, and the value of each grid is not the same as the value of the 2 and 1 squares in advance, that is, Chinese chess.

The value of the horse step in is different.

The so-called horseless is to take a grid as the center, go east for two squares, turn left or right for a grid, neither of these two grids can be filled with the same number as the first grid, and the other three directions are the same, then there are a total of 8 grids that must not be the same as the first grid.

Fill in the blanks from 1 to 9, except that each row, column, and the number in the palace are not repeated, and the value of each grid is not the same as the value of the 2 turns and 1 square forward, that is, the value of the horse step in Chinese chess is different.

It's impossible for us to do 4 or 5 questions in 20 minutes, but we can't solve them at present. There are many aspects related to difficulty, such as the number, how many * few, and the rules (more than 1,000 kinds of killer Sudoku, horseless Sudoku, etc.).

Do you know how to play chess? Horseless Sudoku is that you fill in a number, then there can be no same number on the number of steps on the vault.

Sudoku (shù dú) 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 numbers of all the remaining spaces according to the known numbers on the 9 9 board, and meet the requirements of each row, each column, and the numbers in each thick line palace (3*3) contain 1-9 and are not repeated.

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, each column and each house, so it is also called "nine-square grid".

There are many factors that affect the difficulty of Sudoku, including the most difficult technique, the number of times each technique is used, whether there is a combination of hidden and hidden depth and breadth of skills, and the number of logical deductions on the current board. For players, the number of skills they know, their proficiency, and their ability to observe naturally also affect the difficulty of a question.

There are many Sudoku publications on the market, and the difficulty listed in books, newspapers, and magazines or the time for solving problems for the public is purely for reference, and there are often misplaced difficulties, so there is no need to pay special attention. There are a lot of Sudoku analysis software on the Internet, the more famous ones are Sudoku Explainer by Nicolas Juillerat and Hodoku by Bernhard Hobiger, both of which are free software.

Sudoku (shù dú) is a mathematical game that originated in 18th-century Switzerland.

Sudoku, formerly known as "Nine Square Grid", first originated in China. Thousands of years ago, our ancestors invented Vena, which is more complex than Sudoku today, requiring that the sum of the three numbers vertically, horizontally and diagonally is equal to 15, rather than a simple nine numbers that cannot be repeated.

The "Nine Palaces" in the Confucian classic "Book of Changes" also originates from this, so it is called "Luoshu Nine Palaces". The name of "Nine Palaces" has also been preserved and used to this day because of the important position of the Book of Changes in the history of Chinese cultural development.

Circulation of Sudoku:

It is the most popular guessing game in all of Japan, with more than a million people becoming Sudoku players; The sales of the British "Times" even broke the sales record by publishing Sudoku; Recently, the "Teacher" magazine, funded by the UK, even suggested that "Sudoku" should be introduced into the classroom as a teaching material for students to exercise their brain power. Sudoku is not only fun and fun, but it also improves your reasoning and logic skills.

It's always good to use your brain. The way of thinking in the game of "Sudoku" is different from the learning of Chinese and mathematics in the classroom, and it is also different from the guessing and chess practice in life. "Sudoku" needs to use a new way of thinking to complete the game, the whole process of completing the game is so simple that there is almost no need to make drafts, but the human brain needs to use a very complex way to calculate numbers, and it takes dozens of minutes to complete.

Therefore, playing the game of "Sudoku" can develop brain cells and promote brain development; Improve logical thinking and logical judgment ability.

Sudoku is a mathematical game that originated in 18th-century Switzerland. It is a logic game that uses paper and pen to calculate the dust. Players need to deduce the numbers of all the remaining spaces according to the known numbers on the 9 9 board, and meet the requirements of each row, each column, and each thick line of the numbers in the palace contain 1 to 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 every row, column and house of the banquet, so it is also called "nine square grids".

Sudoku originated from the Lahan Ding Phalanx studied by the Swiss mathematician Euler and others in the early 18th century. In the 80s of the 19th century, a retired American architect Gyans invented a puzzle game based on this Latin square, which was the prototype of Sudoku. In the 70s of the 20th century, people discovered this game in a puzzle magazine in New York, USA, and it was called filling in numbers at that time, which is also recognized as the earliest newspaper version of Sudoku.

The singular number is also called "the only number", that is, the number of loneliness, the number of loneliness, the number of loneliness, and the number of solitude. An singular number is one of the "odd" or "odd" numbers. According to the principle of Hong Shenyu's "Yi Xueben Yuan Dao Theory", numbers are composed of or derived from the number of "1", so the number other than 1 is called the fusion number, the number composed of 1 is called the number of the number, and the number derived from the number of 1 and its number is the derivative number.

Derivatives or numbers, 1 is the number of primitives that exist, so it is the mode of the number, which means that there is or is a deposit. Nothing is "0", which is a derivative of 1 and belongs to a derivative number. Negative numbers, decimals or fractions, irrational numbers, imaginary numbers, complex numbers, etc., are also derived from 1 and the number of numbers, all of which are derivatives.

In the number of 冓, 2 is first formed by the homogenization and repetition of 1, so 2 is the first number and the first even number and the first negative number. Among the numbers above 2, the number that can be synthesized from both 1 and 2 is an even number, a double number and a yin number, and it is also a homozygous number. Numbers that can only be synthesized from 1 but cannot be combined by 2 are odd numbers, and they are also singular and yang numbers.

In odd numbers, in addition to being composed of 1, the number that can also be composed of other non-even numbers is called Zhuo number, also called composite odd number or complex odd number, such as 9, difference and so on, which belongs to one of the generalized composite numbers. And those odd numbers that can only be composed of 1 are the so-called singular numbers or only numbers, which are mathematically called prime numbers or prime numbers (in easy learning, prime numbers can only be unit numbers of any carry system, also called 丌数), such as and so on. 2 is a special number, the first number of the first number or the number of the number, the composite number, but it is also the number of even or the number of the female number, it is the basis of the composite number, but it also has the characteristics of a prime number (it can only be divisible by 1 and itself).

Mathematically, 2 is listed as the first prime number, but it is actually a division that is not strictly prohibited.

In addition, some people confuse "singular" and "Sudoku" as the same concept, and it is not strictly forbidden. The Chinese language emphasizes the structure of the number of Qingfu, and most words cannot be transposed and regarded as the same expression (unless it is a juxtaposed structure).