Learn Sudoku — The Complete Guide

Whether you're a complete beginner or an experienced solver looking to master advanced techniques, our Sudoku learning center has everything you need. Learn the rules, discover solving strategies, and practice with technique-specific puzzles.

Getting Started

Sudoku Rules

Learn the basic rules of Sudoku — how to fill the 9×9 grid so every row, column, and 3×3 box contains 1-9.

Beginner's Guide

A step-by-step walkthrough for first-time players. From understanding the grid to completing your first puzzle.

Benefits of Sudoku

Discover the brain-training benefits — improved memory, concentration, logical thinking, and more.

Basic Techniques

Master these fundamental strategies used in Easy and Medium puzzles:

Last Free Cell

The simplest technique — when a row, column, or box has only one empty cell remaining.

Last Remaining Cell

Find where a specific number must go within a row, column, or box.

Last Possible Number

When a cell can only contain one number after checking its row, column, and box.

Intermediate Techniques

Techniques for Hard and Expert level puzzles:

Obvious Singles (Naked Singles)

When notes leave only one candidate in a cell.

Obvious Pairs (Naked Pairs)

Two cells in a unit share exactly the same two candidates.

Hidden Singles

A number appears as a candidate in only one cell within a unit.

Advanced Techniques

For Evil and Extreme level puzzles:

Hidden Pairs

Two numbers only appear in the same two cells within a unit.

Pointing Pairs

In a box, all candidates for a number align in one row or column.

Obvious Triples (Naked Triples)

Three cells share exactly three candidates.

Ready to Practice?

Apply these techniques on real puzzles: