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.
A fresh puzzle every day — same puzzle for every player. Can you solve it?
Enter any Sudoku puzzle and get the solution instantly, or watch it solved step by step with technique explanations.
Sudoku is the world's most popular number puzzle. The goal is simple: fill a 9×9 grid so that every row, column, and 3×3 box contains the digits 1 through 9 exactly once. No math is required — just logic, patience, and pattern recognition. Whether you are a complete beginner or an experienced solver, Sudoku offers a satisfying mental challenge that sharpens your concentration and problem-solving skills.
Sudoku247 is a modern, ad-free Sudoku platform built for players who want a clean, distraction-free experience. Unlike other Sudoku sites cluttered with ads and pop-ups, every feature here is completely free with no registration required. Our puzzles are generated instantly on your device, so you never run out of fresh challenges.
New to Sudoku? Start with an easy puzzle and use the hint button whenever you get stuck. The hint system will teach you fundamental techniques like Last Free Cell and Naked Singles. As you build confidence, move up to medium and hard puzzles that require more advanced strategies. For a complete overview of the rules, visit our how to play Sudoku guide. Check out our Sudoku tips for strategies at every level. For a fresh challenge every day, try the daily sudoku puzzle — the same puzzle for every player worldwide.