Easy SudokuOnline

Beginner guide

How to Play Sudoku

Sudoku is a logic puzzle, not a math test. You only need the numbers 1 through 9 and a careful eye for rows, columns, and boxes.

Sudoku rules

  1. Each row must contain 1-9 once.
  2. Each column must contain 1-9 once.
  3. Each 3x3 box must contain 1-9 once.
  4. Use the given numbers as fixed clues.

Beginner tips

Start by scanning rows and boxes with many filled cells. If a number can only fit in one place, enter it. If you are unsure, add pencil notes and return later.

Start with an easy Sudoku puzzle when you are ready to practice.

Questions players ask

Sudoku FAQ

What is the goal of Sudoku?

Fill every row, column, and 3x3 box with the numbers 1 through 9 exactly once.

Can a Sudoku puzzle have more than one answer?

Quality Sudoku puzzles should have one unique solution. The puzzles on this site are checked before use.

Should beginners use notes?

Yes. Pencil notes help you track candidates without committing to a final answer.