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Sudoku

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How to play Sudoku

  1. Fill every empty square with a digit from 1 up to the size of the grid.
  2. Each digit appears exactly once in every row, every column and every bold box.
  3. There is always exactly one solution, and you never need to guess.

Tip: Look for a row, column or box that is almost full. Which digit is missing, and where can it go?

Why Sudoku on PuzzleMixer

  • New puzzles every day, from easy to expert.
  • How-to and hints that show why a square is right.
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How to play: Sudoku

  1. Fill every empty square with a digit from 1 up to the size of the grid.
  2. Each digit appears exactly once in every row, every column and every bold box.
  3. There is always exactly one solution, and you never need to guess.
Example
4
3
2
2
1
1
3
4
Solved
4
3
1
2
2
1
4
3
3
4
2
1
1
2
3
4

Tip: Look for a row, column or box that is almost full. Which digit is missing, and where can it go?