Interactive Sudoku Tutorial
A hands-on tutorial that teaches Sudoku on a real grid: it walks through the row, column, and box rules one step at a time, and you place the digits yourself as you go. Built for players who have never finished a Sudoku before.
The tutorial needs JavaScript. For the same rules as a plain page you can read without it, see How to play Sudoku — the rules, a three-rule explainer, and an FAQ.