Learning how to play Sudoku starts with the classic 9x9 grid. The goal is to place the digits 1–9 so each row, column, and 3x3 box contains every number exactly once. With a few core rules and a little practice, anyone can start solving quickly.
Use the practice board below to try the rules in real time. Notes help you track candidates, and hints can guide you if you get stuck. After mastering the basics, explore Easy and Medium puzzles to build speed and confidence.