Type a sudoku into the grid below and we'll fill in the rest. The solver runs on your device and works for any standard 9×9 puzzle.
The solver is for two things: confirming a tricky puzzle has an answer at all, and checking your work after you're done. It's not a way to "skip" hard sudokus. that takes the fun out of it.
If you want help while you're still playing, try the step-by-step solver instead. It shows one move at a time and tells you why it works, so you actually learn something.
Yes, for standard 9×9 puzzles with one solution. If your grid has two valid answers or none at all, the solver will say so.
No. The solver runs entirely in your browser. Nothing leaves your device.
Most puzzles solve in a few hundred microseconds. Even the hardest evil-level grids finish in under a second.
Yes. After typing it in, click Copy share link. The URL includes the puzzle, so whoever opens it will see the same grid.