Machine Mini Game Bean Knowledge: Tips for Playing Sudoku Effectively

Although there are many kinds of brilliant and dazzling mobile games, there are definitely a lot of people who like "Sudoku" as a little brain-burning game like the author, although it looks like nine square grids are filled with numbers 1 to 9. , But there is a lot of knowledge here, and you can stop at any time without any time burden, so it is also the best choice for many people to pass the time when commuting or brain gymnastics.

Knowledge of mobile phone mini-games: Sudoku tips and tricks

The author is a person who likes to play Sudoku online very much. This is one of the few games that can survive on my phone for a long time (the first is Kairosoft's business game). Sometimes I see other passengers in the car for Sudoku. When racking my brains and not knowing where to start, it always makes me want to help (but I can resist it). Today, I will sort out some of the experience and tips on Sudoku over the years, hoping to be helpful to both Sudoku novices and people who often get stuck.

Speaking of the previous, Sudoku rules

Before talking about the skills, let's review the three basic rules of Sudoku:

- The numbers in the small nine squares are not repeated.
- Do not repeat the horizontal row numbers in the big nine square grid.
- Dajiugongge straight numbers do not repeat.
- The first step of the opening: first scan the numbers in the big nine square grid.

I have to say that Sudoku is a game that must take into account both the macro and the micro. In addition to the small nine square grid, you also have to consider the number distribution in the big nine square grid. Many people start to think about each small nine squares as soon as they play the game, so it is easy to get themselves into an alley. The author’s suggestion for this is to observe the existing number distribution in the big nine square grid at the beginning of the game. In the rules of Sudoku, each row, column and small nine-square grid has a number from 1 to 9 that does not overlap. The first is to scan the row and vertical row in the big nine-square grid. Let's take a look at the following Sudoku chart:

Regardless of horizontal or vertical rows, we regard the three lines as a group, that is, the thick line as the boundary. Take the following row as an example. You can see that there is no 1 in the leftmost small nine square grid, and there are already 1s in the small nine square grids in the middle and right. First, we can logically reason about the position of the 1 in the leftmost nine square grid. .

Then, according to the rules of the web sudoku game, as long as the numbers in the horizontal and vertical rows will not be repeated, we can first eliminate the horizontal and vertical rows that already have 1 (the yellow row in the figure below is Column), the remaining position is 1.

Scan all the numbers according to this logic, repeat the scan several times, first fill in all the numbers that can be filled in, to help you eliminate the extra spaces first, and then you can save a lot of trouble.

The second step is to start from the horizontal and vertical rows of the Big Jiugongge

After scanning the numbers, unless there is a small nine-square grid that you can know what to fill out at a glance, I still don’t recommend that you write directly from the small nine-square grid. Instead, we exclude the horizontal and vertical rows of the big nine-square grid.

Like the straight row framed by the red frame in the picture below, the three numbers 5, 6, and 9 are currently lacking. Let's first check the small nine-square grid where the frame is located.

First of all, there is already a 6 in the small nine-square grid where the bottom grid is located. Based on the principle that the numbers in the small nine-square grid do not appear repeatedly, we can conclude that 6 is located in the upper two grids. One of the grids already has 6 in the horizontal row. Based on the principle that a single row of numbers does not appear repeatedly, we can exclude this grid, so 6 is filled in the target space of the top red circle.

There are two other figures. Because of the lack of clues at this stage, we will ignore them first and deal with other judging vertical and horizontal figures. At this stage, the most avoiding obsessiveness is to fill the single line, it is easy to get stuck or become random guessing. After you fill in part of the horizontal and vertical numbers, you can repeat the basic scanning method in step 1 and scan the grid several times to fill in other numbers.

The third step, start Xiaojiugonggeke's missing words

In fact, doing one of the above two steps can basically reduce a lot of blanks to be filled. At this time, because there are already many reference clues available, it will be easier for you to deal with the numbers in the small nine square grid.

The missing numbers in the small nine square grid are already clear at this time, but you will always encounter the problem of which two numbers should be filled in which position. Let's take the small nine square grid in the red box below as an example. From this small nine-square grid, we can already see that the missing numbers are six and nine.

From the surrounding clues, since there are already 6 in the horizontal row, it can be concluded that the grid above is definitely not 6, so we can fill in 9, assuming that the other grid will be the location of 6.

Even at this step, there are actually many squares in the small nine square grid that people don’t know what number to fill in, but as the more numbers are filled, the more clues you get, and the positions that are excluded are also The more, you can repeat the first step and the second step to fill in at any time, and the speed will be faster.

Sudoku online is actually very simple, and it is also very suitable for small brainstorming in daily life. If you want to play Sudoku well, in fact, as long as you master the basic skills and game rules, everyone can easily learn it. However, there is one of the biggest taboos in playing Sudoku, that is, being overly obsessed with having to fill it up in one go. Many people often make this mistake when filling in numbers, but when the clues are unclear, this will happen instead. It is the main reason for people to get stuck. I hope everyone can have a good time with the tips I shared this time.