Get hundreds of free printable Sudoku puzzles Here’s an example of a traditional Sudoku puzzle: In fact, it’s possible to make and solve a Sudoku puzzle with letters, colors, or other symbols.
Numbers are only used because they’re well-recognized symbols.
It’s logic-based and doesn’t require any math. Sudoku is a number puzzle – you can think of it a little like a crossword puzzle, except that it uses numbers.
