A sudoku puzzle is a grid of 9x9 cells, that has been subdivided into nine grids or "regions" of 3x3 cells.
The objective is to fill in the 9x9 grid with digits so that each column, each row and each of the nine 3×3 sub-grids that compose the grid contains all of the digits from 1 to 9.
To start a new game you must generate a new puzzle by selecting from the New puzzle drop-down list the desired difficulty level.
Some cells are empty!
You did something wrong! Try again!
Congratulations! You found the solution!
You may submit your score.