How To Play

A classic sudoku puzzle is made up of a 9-by-9 grid with nine 3-by-3 sub-grids called boxes. There are 9 rows, 9 columns and 9 boxes in every puzzle.

The object of the game is to fill all squares in the grid with the correct number. The rules are:

  • Every row, column and box must contain all the digits 1 to 9.
  • Each number can only appear once in every row, column or box.

Every puzzle has only one correct solution!