Sudoku Help

Need a hand with Sudoku? You’re in the right place! Here you’ll find step-by-step guides, quick tips, and visual technique explainers to help you become a puzzle pro.

How to Play is the quick-start. Rules is the reference. Walkthrough is a visual tour. Techniques is the strategy library. FAQ is for quick questions.

FFG difficulty levels: Easy, Medium, Hard, Expert, and Legendary.

Quick Start Instructions

  • Fill every row, column, and 3×3 box with numbers 1–9 (no repeats).
  • Given numbers are fixed and never change.
  • Start with areas that are almost complete to find the next sure number.
  • Pencil Mode lets you jot notes before committing.