Sudoku Solver

Sudoku solver that can help solve puzzles from other sources. Solving can take place automatically, step by step or checking the candidates for each square.

To solver Sudoku:

1Enter known numbers/digits in the empty Sudoku board below.

2Check if Sudoku can be solved using the Check Sudoku button.
Difficulty and solving strategies of a particular puzzle will be shown.

3Solve Sudoku yourself or use the Show next step & Show solutions buttons.
At any time you can check which digits can still be put into each square corresponding candidates.

Sudoku solver

Enter known numbers/digits on the Sudoku board below.

To see the solutions, please click on the button below.

To check the difficulty, possibility to solve and solving strategies press the Check Sudoku button. To clear the board press the Clear board button.