Difficulty: 00:00
About sudoku?

Sudoku is a logic based number placement puzzle game. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 blocks contain all of the digits from 1 to 9. To start, the puzzle is partially filled according to the difficulty level selected.

Sudoku Rules
  1. You cannot change the pre-filled numbers in the course of the game.
  2. Each column must contain all of the numbers 1 through 9 and no two numbers in the same column of a Sudoku puzzle can be the same.
  3. Each row must contain all of the numbers 1 through 9 and no two numbers in the same row of a Sudoku puzzle can be the same.
  4. Each block must contain all of the numbers 1 through 9 and no two numbers in the same block of a Sudoku puzzle can be the same.
  5. The only way the puzzle can be considered solved correctly is when all 81 boxes contain numbers and the other Sudoku rules have been followed.