What is the worldwide popular Sudoku game?

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    David Johnson 5 months ago

    Sudoku is a popular leisure activity that is a number puzzle, also called a magic square. Its solution allows you to develop logical thinking, attention, analytical approach. The advantages of Sudoku lie not only in the benefits for the brain, but also in the ability to distract from problems, to fully concentrate on the task.

    Sudoku rules

    This free Sudoku puzzle takes up little space, unlike scanwords, crosswords and so on. The playing field, consisting of 81 squares, cells are divided into small blocks, 3 * 3 in size. It can easily fit on a piece of paper. The task looks like selectively filled cells, which must be supplemented with values and fill in the entire plate. In Sudoku, the rules of the game are very simple and allow you to exclude multiple solutions. Each row or column contains numbers from 1 to 9. Also, the values are not repeated within one small block.

    Sudoku differ in the level of difficulty, which depends on the number of cells filled with numbers and the methods of solving. Usually there are about 5 levels, where the most difficult can be solved only by real masters.

    Sudoku has its own rules and secrets. The most simple puzzles can be solved in a few minutes using deduction, as there is always at least one cell for which only one number is suitable. Complex Sudoku can be played for hours. A correctly formed puzzle has only one solution.

    Rules on how to solve Sudoku

    To get the right solution, you need to consider a few simple rules:

    • A digit can be written in a cell only if it is not in the horizontal and vertical lines, as well as in the small square 3 * 3.
    • If it can be written exclusively in one cell.

    If both points are taken into account, then you can be sure that the cell is filled in correctly.

    How to solve simple sudoku?

    Let's look at a specific example of how to solve Sudoku online. The playing field in the picture is a relatively simple version of the game. The rules of the Sudoku game for simple ones are reduced to identifying dependencies in the horizontal and vertical planes and in separate squares.

    For example, the central vertical lacks the numbers 3, 4, 5. The four cannot be in the bottom square, since it is already present in it. It is also possible to exclude the empty center square, since we see 4 in the horizontal line. From this we conclude that it is located in the upper square.

    Similarly, we can put down 3 and 5 and get the following result.

    By drawing lines in the upper middle small square 3 * 3, you can exclude cells in which the number 3 cannot be located.

    This method is called "The Last Hero" or "Loner" by some. It is also used as one of several master levels. The average time spent on a simple difficulty level hovers around 20 minutes.

     

    More Resources:

    Tips to help you learn how to successfully solve Sudoku

    9 facts and misconceptions about

    Sudoku Online game

     
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