To play a good Sudoku game, you must first understand its characteristics and requirements, and then apply some principles and skills, and the benefits will be given:
1. Use the exclusion method to fill in the rows or columns that can determine the numbers first.
Two. Give priority to the rows or columns with the fewest spaces
3. When the above two principles are applied to fill in the rows and columns that can be determined and have the least spaces, other rows or columns have numbers that can be determined, and the first two principles are used to fill in the blanks in a cycle.
Using this technique is basically to fill in the certain numbers one by one, and there is no need to try the possibility. There is only one answer. The key is to find a breakthrough. I wish everyone good luck here.