Fill in the blanks with the number from 1 to 9, while filling in the numbers, the following 2 should be followed.. 1. The numbers in row or column cannot repeat.
2. The numbers in each 3x3 block cannot repeat.
How to play sudoku games:
There is really only one rule to Sudoku: Fill in the game board so that the numbers 1 through 9 occur exactly once in each row, column, and 3x3 box. The numbers can appear in any order and diagonals are not considered. Your initial game board will consist of several numbers that are already placed. Those numbers cannot be changed. Your goal is to fill in the empty squares following the simple rule above.