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Sudoku

The classic number placement puzzle. Fill a 9×9 grid so that each row, column, and 3×3 box contains the digits 1-9 exactly once.

Difficulty Levels

Easy
~40 given numbers
Medium
~32 given numbers
Hard
~26 given numbers
Expert
~22 given numbers

Quick Rules

  • 1.Fill the grid with digits 1-9
  • 2.Each row must contain each digit exactly once
  • 3.Each column must contain each digit exactly once
  • 4.Each 3×3 box must contain each digit exactly once
  • 5.Use the given numbers as clues to solve the puzzle