Sudoku Rules

A Sudoku puzzle has one completed solution.

Givens cannot be changed.

Guessing is unnecessary for well-made beginner puzzles, but harder puzzles may require deeper candidate tracking.

Browse All Sudoku Printables

Sudoku is a logic-based number placement puzzle. Fill the 9x9 grid so each row, column, and 3x3 box contains digits 1 to 9 exactly once.

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Pick a level that suits you it can be something really tough.
Download the PDF file. Make sure to print it at the right size so the lines are clear.
Use a pencil to fill in the answers and also write down the possibilities in the corners.
If you are stuck and cannot figure it out look at the answers, on the page to help you out.

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