# Sudoku generator & checker

Canonical page: https://nepocore.com/tools/sudoku/

Generate a nine-by-nine Sudoku with a unique solution, enter your answers, check conflicts and print a puzzle or solution.

## How to use it

1. Enter your own values or choose a supported file.
2. Adjust the options and run the tool.
3. Review the result, then copy, export or save it when available.

## Example

Generate a medium puzzle, fill a few cells and use Check to identify row, column or box conflicts.

## Limits and checks

Difficulty reflects the number of removed clues, not a certified human-solving rating. The generator checks uniqueness before removing each clue.

## Access and processing

Free to use without an account. Interactive processing requires JavaScript in a modern browser. Input is processed in the browser rather than sent to a processing server. Optional browser storage is not a synchronized account.


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