Sudoku

Free online Sudoku puzzle solver and generator. Play classic 9x9 Sudoku with multiple difficulty levels, auto-check, hints, and solve any puzzle instantly. No signup needed.

Difficulty:
Time 00:00
Best -
Pencil Marks:

How to Play

  1. Fill the 9×9 grid with digits 1 through 9
  2. Each row must contain all digits 1-9 exactly once
  3. Each column must contain all digits 1-9 exactly once
  4. Each 3×3 box must contain all digits 1-9 exactly once