Type the given numbers from any Sudoku — a newspaper, a puzzle book, or another app — into the grid below. Then solve it yourself with step-by-step hints, or view the full solution instantly.
Click a cell and type its number. Leave empty cells blank. Conflicting entries are highlighted so you can correct typos before solving.
Click cells to cycle through numbers 1-9, click again to clear
Type the starting digits from your puzzle into the matching cells. Only the clues — leave the rest blank.
Play it yourself with hints, or let the solver reveal the complete solution at once.
Step through the solution to see which technique applies at each move and why.
Found a tough Sudoku in your morning paper or a puzzle book and can't crack it? Type the given numbers into the grid above and Sudoku247 will check it for a valid unique solution. You can then work through it with step-by-step hints that teach real solving techniques, or reveal the answer instantly.
Prefer to paste a puzzle or use a full-featured board? Try the dedicated Sudoku Solver, which shows every elimination and the exact technique used at each step.
Whether you want to verify your own solution, find where you went wrong, or just need a nudge, entering the puzzle here is the fastest way to go from a printed grid to a worked solution. Completely free, no registration.