Printable sudoku

Number puzzles with exactly one solution. Easy grids are 4 by 4, medium grids are 6 by 6 and hard grids are the full 9 by 9.

Easy

Ages 4 to 6

Medium

Ages 7 to 9

Hard

Ages 10 and up

How to play

  1. Every row, every column and every box (the areas marked with thick lines) must hold each number once.
  2. Start with a row, column or box that is almost full and work out the missing number.
  3. If a number can only fit in one place, write it in. Check the answer key if you get stuck.