Sudoku Generator
Generate Sudoku puzzles in 4×4, 6×6, or classic 9×9 sizes. Kid-friendly beginner puzzles to challenging classics with solutions included.
How to Play Sudoku:
Fill in the grid so that every row, column, and box contains the numbers 1 to 4. Each number can only appear once in each row, column, and box.
Select your options and click
"Generate Sudoku" to create a puzzle
About This Tool
The Sudoku Generator creates logic puzzles at multiple difficulty levels and grid sizes. Start with 4×4 puzzles for young learners (using numbers 1-4), progress to 6×6 for intermediate challenge, or tackle the classic 9×9 grid. Sudoku develops logical thinking, pattern recognition, and problem-solving skills without requiring any math calculation—just logic! Each puzzle includes a solution key for checking work.
Frequently Asked Questions
Fill in the grid so that every row, column, and box contains each number exactly once. For a 9×9 puzzle, use numbers 1-9. For 6×6, use 1-6. For 4×4, use 1-4. No math is required—it's pure logic! Start with cells that have few possibilities and work from there.
4×4 grids use numbers 1-4 with 2×2 boxes—perfect for young children or Sudoku beginners. 6×6 grids use 1-6 with 2×3 boxes—a good intermediate step. 9×9 is the classic Sudoku with numbers 1-9 and 3×3 boxes, suitable for older students and adults.
Difficulty is determined by how many numbers are given at the start. Easy puzzles show more numbers, requiring less deduction. Hard puzzles show fewer numbers, requiring more advanced solving techniques. All puzzles have exactly one valid solution.
Sudoku builds logical reasoning, pattern recognition, concentration, and persistence. It teaches process of elimination and systematic problem-solving. These skills transfer to math, science, and everyday decision-making—all while being genuinely fun!