Originally known as Number Place puzzles in books published by Dell Magazines in 1979, the modern Sudoku first started appearing in newspapers in 2004. Today there are many variations of this popular puzzle, including Sudoku puzzles of different grid sizes and containing characters instead of numbers, but for those who prefer standard Sudoku puzzles, we’ve got you covered. Our Sudoku puzzles are free to download for personal use, so print as many copies as you need for your noncommercial purposes, and enjoy!