Help Sudoku is a simple tool to help you solve sudokus. You enter the numbers you know and Help Sudoku keeps track of your progress as you go.

If you get stuck, you can ask for a hint and Help Sudoku will show you whichever cell you ask for. Otherwise, you carry on solving the sudoku yourself using your own techniques, and Help Sudoku won’t say anything, unless you make a mistake.

Unlike most sudoku games available online and on mobile devices, Help Sudoku uses only traditional sudoku-solving methods, not brute-force search (i.e. trial and error), so when Help Sudoku tells you that a sudoku is ‘solvable’, that means it has a single solution that you can arrive at using traditional methods, without guessing.