Learn Sudoku Step by Step

Updated 15 October 2026

Sudoku is learned by reasoning, not by guessing, and the fastest way to improve is a short loop: attempt a puzzle, get a hint that explains the move, then review what you did. This path puts the pieces of that loop in order, and every step is backed by the same technique engine that powers Suuudokuuu.

Step 1: Learn the rules

Fill every row, column and 3×3 box with the digits 1 to 9, each exactly once. The how to play guide covers the rules and the first two deductions in plain language, and the glossary explains the terms you will meet next.

Step 2: Build the first habits

Ten habits, from scanning for singles to your first pair patterns, each with a solver-checked mini board, are on the sudoku tips page. Practice them on a Newbie puzzle, then an Easy one.

Step 3: Add one technique at a time

The technique library has a page for every pattern the game detects, with a worked example you can replay on a live board. To see which techniques each tier asks for before you climb, read the technique frequency by difficulty data.

Step 4: Let hints teach you

When you are stuck, a hint should explain, not just fill a cell. The interactive hint demo lets you try the hint stepper on a live board: it names the technique first, then shows the pattern, then walks through the move. Got a puzzle from a book? Paste it into the step-by-step solver.

Step 5: Review your solve

The app keeps your last 20 finished games per difficulty and replays them move by move, labelling each placement with the technique behind it. Read how on the review your solve page, and see the rest of your stats on track your progress.