Master the Art of Sudoku

From basic rules to advanced techniques, learn everything you need to know about solving Sudoku puzzles.

Sudoku Basics

What is Sudoku?

Sudoku is a logic-based number placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 boxes contains all of the digits from 1 to 9.

Example of a Sudoku grid

Basic Rules

  • Each row must contain numbers 1-9 without repetition
  • Each column must contain numbers 1-9 without repetition
  • Each 3×3 box must contain numbers 1-9 without repetition
  • Each puzzle has only one valid solution