Sudoku Generator
Creates proper sudoku puzzles — every puzzle is checked to have exactly one solution — from easy to very hard. Solve on the page with pencil-mark-free checking and hints, print a clean sheet with or without the solution, export PNG/SVG or publish an interactive embed.
Runs 100% in your browser — your puzzles never leave your device.
Read the full guide to this tool
Notes
- Difficulty is controlled by how many givens remain and is verified with a solver, so "hard" puzzles are hard because of logic, not because of guesswork.
- The generator runs entirely in your browser and produces a fresh puzzle every time.
- Runs 100% in your browser — your words and puzzles never leave your device unless you publish an embed.
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