This kind of games makes the mind more agile and alert.

Game rule:
The common type of sudoku is a table 9 in 9, the whole table is divided into 9 smaller tables 3 in 3. In this table, there are several default numbers that should be found in the following three rules:
Rule 1: In each row, the numbers from 1 to 9 will not be repeated.
Second rule: In each column, the numbers from 1 to 9 are not repeatable.
Third rule: In each 3 × 3 area, the numbers from 1 to 9 are not repeatable.