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Seeded Sudoku Puzzle Generator

Online seeded sudoku puzzle generator. 22–81 requested clues. Search limits can leave more clues than requested; the achieved count is reported.

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  1. 01

    Add your input

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seeded sudoku puzzle online

Use seeded sudoku puzzle generator online for Requested clue count, Reproducible seed. 22–81 requested clues. Search limits can leave more clues than requested; the achieved count is reported. Bounded local puzzle processing. Search limits and supported input formats are described for each tool.

How to use it

Select Try example and follow its grid, word-list or JSON shape. Change the options if needed, select Run tool, then copy or download the JSON result.

Options and example settings

OptionChoices / valueExample default
Requested clue countMain input. Signed finite values. 36
Reproducible seedText seed; the same seed reproduces the same output.kirikuba

Calculation method

Shuffle a valid grid, then remove only clues whose removal preserves a proven unique solution.

Worked examples

Apply seeded sudoku puzzle generator to the case below, keeping the displayed units and assumptions. 22–81 requested clues. Search limits can leave more clues than requested; the achieved count is reported.

Seeded Sudoku Puzzle Generator — worked case

Settings: Reproducible seed: kirikuba

Input:

36

Calculated result for these inputs:

Output:

{
  "puzzle_rows": [
    "706500320",
    "085000100",
    "030071000",
    "000216007",
    "000409600",
    "062700034",
    "600000498",
    "070890263",
    "900060001"
  ],
  "solution_rows": [
    "716548329",
    "485923176",
    "239671845",
    "394216587",
    "857439612",
    "162785934",
    "623157498",
    "571894263",
    "948362751"
  ],
  "requested_clues": 36,
  "actual_clues": 36,
  "unique": true,
  "seed": "kirikuba"
}

Choose the right tool

Choose a checker to validate a supplied grid and a solver to search for answers. Generators use reproducible seeds. Read uniqueness, unplaced-word and truncation flags before treating an output as complete.

Limitations and common mistakes

  • 22–81 requested clues. Search limits can leave more clues than requested; the achieved count is reported. Bounded local puzzle processing. Search limits and supported input formats are described for each tool.
  • Use the exact symbols, row sizes and JSON keys shown in the worked example. Check any limit or incomplete-result flags.

Frequently asked questions

How can I use seeded sudoku puzzle online?

Select Try example and follow its grid, word-list or JSON shape. Change the options if needed, select Run tool, then copy or download the JSON result.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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