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Sudoku 9×9

Number Puzzle

Hard

Your progress is saved automatically on this device.

Grid Size

9×9

Filled Cells

29/81

Audience

Seniors

About this difficulty: For experienced players. Fewer clues require advanced techniques.

Print or save as PDF

Print opens a preview first. You can switch the answer key on or off there, too.

Answer key shows the complete solution on a second page

PDF includes: Puzzle grid (page 1), Answer key (page 2)

Puzzle Preview

9
1
7
3
6
9
3
6
9
2
4
7
8
3
8
8
4
9
2
3
2
8
1
4
2
7
5
6
1

How to Play

The Rules:

  • • Fill in the missing numbers from 1 to 9
  • • Each row must contain the numbers 1-9 without repeating
  • • Each column must contain the numbers 1-9 without repeating
  • • Each 3×3 box must contain the numbers 1-9 without repeating

Tips for solving

  • • Start with rows, columns, or boxes that have the most numbers filled
  • • Look for cells where only one number is possible
  • • Use the process of elimination to narrow down possibilities
  • • In online mode, hints are available if you get stuck

Explore more puzzle pages

Sudoku GalleryDaily ChallengeWord Puzzles

How to play Sudoku

  1. Fill every empty cell with the numbers 1 to 9.
  2. Each number appears exactly once in every row and column.
  3. Every 3×3 box also contains each number exactly once.

Help

  • Note mode lets you pencil in possible candidates.
  • “Explain a hint” shows the next logical step and why it works.
  • Duplicate numbers turn red. Your progress is saved automatically.

On paper

Print opens a preview first; from there you can print or save the PDF, with the answer key if you like.