How to play sudoku

Как играть в Судоку. Правила и методы решения

Судоку — логическая игра-головоломка с числами. Для ее решения потребуется сконцентрировать внимание, а также задействовать логическое мышление. Сложность судоку зависит от количества изначально заполненных клеток и от методов, которые нужно применять для её решения. Регулярные игры в Судоку улучшают память, ясность ума и замедляют старение клеток мозга.

Правила игры

В начале игры часть ячеек уже заполнены

Перед тем, как вписать цифру в ячейку проверьте ее по следующим правилам:

Метод решения

Выберите малый квадрат, в котором изначально открыто как можно больше цифр. С помощью режима заметок впишите в каждую пустую ячейку цифры-кандидаты. При этом вы должны анализировать, какие цифры там могут находиться учитывая правила, которые мы рассмотрели выше. В итоге у вас должен получиться такой вариант:

Мы видим, что в одной ячейке есть единственная цифра-кандидат. Её можно вписать как вариант решения:

После того, как мы вписали цифру 7, она пропадает из заметок в других ячейках. Теперь в них могут появиться новые варианты с единственной цифрой-кандидатом. В данном случае мы вписываем цифру 4:

У нас снова появилась единственная цифра-кандидат. Вписываем цифру 2:

Вписываем цифру 3:

И получаем полностью заполненный малый квадрат.

Выше мы рассмотрели идеальный случай, когда при каждом заполнении ячейки появлялась единственная цифра-кандидат. В более сложных раскладках могут быть случаи, когда ни в одной ячейке не будет единственного кандидата. В такой ситуации переходите к другим малым квадратам, пока не впишите все цифры-кандидаты в каждом из них. Затем действуйте методом исключения, обращая внимание на то, как стоят цифры-кандидаты в соседних малых квадратах

Заполняем все ячейки цифрами-кандидатами. Затем для каждой ячейки с единственным кандидатом вписываем цифры

Поздравляем, вы решили Судоку! Теперь попробуйте потренировать память и не используйте режим заметок. Держите все цифры-кандидаты в уме, пользуйтесь только вашей памятью и логикой!

How to play sudoku

Sudoku is played on a grid of 9 x 9 spaces. Within the rows and columns are 9 “squares” (made up of 3 x 3 spaces). Each row, column and square (9 spaces each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or square. Does it sound complicated? As you can see from the image below of an actual Sudoku grid, each Sudoku grid comes with a few spaces already filled in; the more spaces filled in, the easier the game – the more difficult Sudoku puzzles have very few spaces that are already filled in.

As you can see, in the upper left square (circled in blue), this square already has 7 out of the 9 spaces filled in. The only numbers missing from the square are 5 and 6. By seeing which numbers are missing from each square, row, or column, we can use process of elimination and deductive reasoning to decide which numbers need to go in each blank space.

For example, in the upper left square, we know we need to add a 5 and a 6 to be able to complete the square, but based on the neighboring rows and squares we cannot clearly deduce which number to add in which space. This means that we should ignore the upper left square for now, and try to fill in spaces in some other areas of the grid instead.

Sudoku is a game of logic and reasoning, so you shouldn’t have to guess. If you don’t know what number to put in a certain space, keep scanning the other areas of the grid until you seen an opportunity to place a number. But don’t try to “force” anything – Sudoku rewards patience, insights, and recognition of patterns, not blind luck or guessing.

What do we mean by using “process of elimination” to play Sudoku? Here is an example. In this Sudoku grid (shown below), the far left-hand vertical column (circled in Blue) is missing only a few numbers: 1, 5 and 6.

One way to figure out which numbers can go in each space is to use “process of elimination” by checking to see which other numbers are already included within each square – since there can be no duplication of numbers 1-9 within each square (or row or column).

In this case, we can quickly notice that there are already number 1s in the top left and center left squares of the grid (with number 1s circled in red). This means that there is only one space remaining in the far left column where a 1 could possibly go – circled in green. This is how the process of elimination works in Sudoku – you find out which spaces are available, which numbers are missing – and then deduce, based on the position of those numbers within the grid, which numbers fit into each space.

Sudoku rules are relatively uncomplicated – but the game is infinitely varied, with millions of possible number combinations and a wide range of levels of difficulty. But it’s all based on the simple principles of using numbers 1-9, filling in the blank spaces based on deductive reasoning, and never repeating any numbers within each square, row or column.

Useful Sudoku Tips and Articles

In the early days of the Sudoku craze, Sudoku used to be played with pen and paper. Commuters played Sudoku on newspapers on their laps, or in paper Sudoku books with dozens or hundreds of pages of puzzles. The reason for this legacy of pen and paper is because Sudoku used to be published in newspapers – in fact, the first number puzzles similar to modern Sudoku puzzles appeared in a French newspaper in 1895.

Playing Sudoku for the first time can be an intimidating experience. It might seem overwhelming if you’re a beginner Sudoku player who’s trying to figure out the right way to place numbers on the grid and solve the puzzle. Learning how to play Sudoku presents a lot of unique challenges, but you will learn faster if you can avoid some of these common things that beginner Sudoku players get wrong.

Here are some of the common mistakes of beginner Sudoku players:

Sudoku is a fun, challenging, mentally stimulating game. Lots of people find that Sudoku can feel almost addictive – you want to keep playing it as much as possible, and the better you get, the more you enjoy the game.

Sudoku is such a popular game in part because it’s so versatile. Anyone can play Sudoku, in any location, at almost any time. And if you make Sudoku a regular part of your routine, you will find that your life is a lot more fun.

Here are a few reasons why you should play Sudoku daily:

If you’re trying to get better at playing Sudoku, one of the best ways to improve your skills is to read Sudoku books. There are a wide variety of Sudoku books on the market that offer all kinds of help to improve your Sudoku skills, such as Sudoku books with a range of very easy to very difficult puzzles, or Sudoku books with advanced problem solving techniques that teach you how to apply a consistent method for solving Sudoku puzzles.

When you first get started playing Sudoku, it’s easy to get stuck. If you sometimes feel like you don’t know where to begin to solve a Sudoku puzzle, or if the grid starts to run together and you don’t know what to do next, or you don’t know how to approach a new Sudoku puzzle with a fresh, momentum-building perspective, then you might want to take a step back and try to look at the Sudoku grid in a new light.

How to play sudoku

This video is intended for beginners who are still learning more about the game of Sudoku and would like to see a visual discussion of the rules of the game.

If you already know how to play Sudoku, don’t worry. We’re working on some more advanced materials, which we plan on releasing in the coming weeks.

We hope that you enjoy this video. If you do, please “like”, Google+ and share it.

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Useful Sudoku Tips and Articles

Lots of people love to play Sudoku – people of all ages, all nationalities, and all walks of life. In any big city, you can see people playing Sudoku on their mobile phones while riding the train to work. Sudoku is played in schools, in parks, at senior centers, and in private homes. Sudoku is one of the most popular puzzle games and one of the most prevalent daily activities all over the world.

Sudoku is one of the world’s most popular puzzle games, but even though it’s a game played by millions of people all over the world, there is a big difference in skill level between the most successful Sudoku players and average Sudoku players who enjoy the game just as a casual hobby.

The word “Sudoku” is a Japanese word that means “single number” – so many people assume that Sudoku was invented in Japan. However, the truth about the invention of Sudoku is more complicated and more interesting.

Do you think you’re good at solving Sudoku puzzles quickly? Even if you’re a Sudoku whiz, chances are you still aren’t quite as fast at solving Sudoku puzzles as the Guinness World Record holder. The best Sudoku players in the world are amazingly fast at working through the grid.

Sudoku is a unique puzzle game that offers a variety of cognitive challenges – logic, deductive reasoning, memory, pattern seeking, and problem solving. Sudoku has become so popular because it appeals to a wide range of people across cultures, because it’s easy to play anywhere, because it has a simple premise with a rich array of complex outcomes.

Sudoku is fun, fulfilling, and sometimes devilishly challenging – it has something to offer everyone on the spectrum from casual fans to hardcore enthusiasts and world-class competitors.

There are many reasons why Sudoku has captured the imagination of so many people – here are a few reasons why Sudoku is, perhaps, the perfect puzzle game: