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Shigatse challenges the Nine Square Grid 2019

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Guide:In today's digital age, the Nine-Square Grid Challenge has become a popular puzzle game. This kind of game will not only improve your intelligence, but also exercise your problem-solving skills. In this article, we'll walk you through how to complete the Nine-Square Grid Challenge step-by-step and share some helpful tips and advice. Before we begin: First of all, we need to clarify the basic rules of the 9x...

  In today's digital age, the Nine-Square Grid Challenge has become a popular puzzle game. This kind of game will not only improve your intelligence, but also exercise your problem-solving skills. In this article, we'll walk you through how to complete the Nine-Square Grid Challenge step-by-step and share some helpful tips and advice.

Before you begin:

  First of all, we need to clarify the basic rules of the 9-square grid challenge: fill in the numbers 1-9 in a 3x3 grid, and make sure that the numbers in each row, column, and two diagonal lines are not repeated. This may sound a bit complicated, but don't worry, let's take it step by step.

日喀则挑战九宫格2019

Step 1: Fill in the edges

  It's not very difficult, just a two-step operation is fine, because it requires no repeating numbers in rows, columns, and diagonals. Here's how to do it: fill in the numbers 3,5 in the first line and the numbers 7,9 in the last line. This step takes advantage of the simple fact that there is only one 3 and one 5 in any grid of 9s, lining up the two numbers that are least likely to appear in the center row or column.

Step 2: Determine the central number

  Now, fill in the number 4 inside the middle square, as it is the most common and usually in the center. In the process, you may have noticed that other numbers are also constrained in position.

Step 3: Fill in the remaining numbers step by step

  This is followed by a more cumbersome process, where logical inference can be applied. If you look at the sidelines you fill in in more detail, you will conclude that these positions are possible positions for other numbers. For example, if a vacancy is in column 1 of the second row, the more likely number may be 2 or 6 (assuming there are other numerical limitations).

Tips:

  1. Think step-by-step: Divide the board into small sections to consider, focusing on one corner or one edge at a time.
  2. Take advantage of double-sided squares: If the two rows and other cells on the two columns of a certain grid are filled with numbers, then the number of the square is determined. For example, if column 1 has only 3 and 7 left, and it is possible to fill in the middle number 3 when neither row 1 nor row 2 is possible, then column 1 of row 1 will be filled with 3.

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Shigatse Fire Vocational Skills Appraisal Examination official website The official website of the China Fire Application Center in Shigatse