Sudoku Generator — Printable 9×9

Generate randomized Sudoku puzzles. Private by design—everything runs locally in your browser.

Puzzle Settings & Actions

Difficulty

Include solution in PDF

Tip: Keys — N = New, P = Print, S = Save PNG, D = Save PDF.

Puzzle

Sudoku — Medium

Solution (Preview)

Note: The PDF can include the solution even if the preview is hidden.

About this generator

Each puzzle is created by generating a full valid Sudoku and then removing numbers while ensuring there’s a unique solution. Easy puzzles keep more “givens”; hard puzzles remove more.

Easy: ~43 givens
Medium: ~33 givens
Hard: ~25 givens

Everything runs locally in your browser. No uploads, no tracking.