sudoku-puzzle-generator

Generate printable Sudoku puzzles with multiple difficulty levels in JavaScript.

Live Demo → Sudoku Printable

Features

• Generate valid Sudoku puzzles (9x9)
• Multiple difficulty levels: Easy, Medium, Hard, Expert
• Puzzle validation and solving
• SVG/HTML output for printing
• Unique solutions guaranteed
• Batch puzzle generation

Installation

npm install sudoku-puzzle-generator

Usage

const { generatePuzzle, solvePuzzle, validatePuzzle } = require('sudoku-puzzle-generator');

// Generate an easy puzzle
const puzzle = generatePuzzle('easy');
console.log(puzzle.grid); // 9x9 array (0 = empty)

// Solve a puzzle
const solution = solvePuzzle(puzzle.grid);
console.log(solution); // Solved 9x9 array

// Validate a completed puzzle
const isValid = validatePuzzle(solution);
console.log(isValid); // true

Live Demo

Try the full-featured Sudoku Printable generator online.

License

MIT