Sudoku guides for every solving stage
Learn the rules, choose a suitable difficulty and build a solving routine you can repeat on a new grid. SudokuGG guides explain what a pattern means, why an elimination is valid and where to practise it. They support the playable Classic Sudoku, Daily Sudoku, Printable Sudoku and Kalkudoku modules.
New to Sudoku? Read the rules, learn singles and complete a few Easy puzzles before studying pairs or X-Wing. Advanced names are useful only after the underlying logic is clear.
Start with the fundamentals
A complete first lesson: rules, candidates, controls and a repeatable solving routine.
Understand rows, columns, 3×3 boxes and why Sudoku is logic rather than arithmetic.
Work through scanning, candidates and singles without guessing.
Learn the two essential placements that drive almost every solve.
Build an intermediate toolkit
Once direct placements become rare, candidate relationships let you remove possibilities while preserving the solution. After every elimination, return to scanning for singles.
The main reference from basic scanning through advanced patterns, with a recommended learning order.
Use repeated candidate sets to clear other cells in the same house.
Connect a box with a row or column to make safe eliminations.
Recognise a four-corner candidate pattern across two rows or columns.
Choose a level and practise
Difficulty is best understood as a solving path. The number of givens can offer a clue, but the techniques required to make progress are more important.
Practise scanning and singles with more immediately useful givens.
Add candidate notation and short elimination sequences.
Expect fewer obvious moves and more interactions between houses.
Use a careful candidate grid and advanced patterns without guessing.
Compare the four levels and decide when to move up or step back.
Develop a consistent scan and reduce avoidable mistakes.
Diagnose guesses, missed candidates and contradictions before restarting.
Understand the account-free browser experience and available controls.
Print and explore variants
Create clean A4 practice sets, choose a layout and include solutions.
Combine Latin-square logic with addition, subtraction, multiplication and division cages.
How these guides are maintained
Rules and technique descriptions are checked against standard Sudoku constraints. Claims about notes, hints, printing and saved progress are compared with the working modules. We update a review date only after a meaningful content or product check. See the editorial policy for puzzle validation, authorship and corrections.
If an example is unclear or a feature description no longer matches the game, send the page address and the specific issue through the contact page. A precise correction is more useful than adding another near-duplicate article.
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