Hard Sudoku Puzzles
Free to Print Sudoku Puzzles with Answers
To view these puzzles you will need to use Abode Reader.
How to Play Sudoku
You only need to use logic to solve sudoku puzzles and each puzzle can only be solved in one way.
Complete the grid until every row, column and 3 x 3 box contain the digits 1 to 9. Each number can only appear once in each row, column and box. There are different levels that will challenge you, a new player should start with ultra-easy just to get to grips with the game.
The Sudoku Box, Columns and Rows
Only 1 to 9 can appear in each row, column or box
