Number Puzzle

[Game Features]
1.You can choose 3 types of difficulty modes;
2.The big test of digital games,you need to choose the right number to fill.
[Skills]
Priority is given to the row or column with the least space to fill in the number.
Observe the form and study its rules. Fill in the assured rows or columns first.
* Remember not to fill in numbers at will, you need to master the rules and try again!