Sudoku guides
Twelve articles for the questions that come up before any technique has a name: what the rules actually say, why a hard grid stalls, what the difficulty levels really mean, how to explain sudoku to a child, and where to get printable sheets. Each one ends where you can put it to use.
The rules of sudoku
Three sentences cover the whole game. The interesting part is what the rules do not say.
Sudoku to print as a PDF
Paper still beats a screen for some people. Here is how to get good sheets in one step.
How to solve a hard sudoku
Being stuck is not a sign of weakness — it is the puzzle telling you which tool to pick up next.
Sudoku tips for beginners
You know the rules and it still feels slow. These six habits are the difference.
How long does a sudoku take?
Typical times per difficulty — and why comparing them is less useful than it looks.
Is sudoku good for your brain?
A sober look at what a daily puzzle does for you, and what it does not.
Sudoku for Seniors: Staying Mentally Fit
Sudoku is an excellent workout for the brain and is especially popular among seniors.
Sudoku Variants: Variety for Puzzle Fans
Besides the classic 9x9 grid, there are many other exciting Sudoku variants to discover.
Sudoku Difficulty Levels Explained
Sudokus come in various difficulty levels, ensuring there is a suitable challenge for every player.
Sudoku for Kids: Learning Logic Through Play
Sudoku is not only a great pastime for adults but also promotes logical thinking in children.
Typical Sudoku Mistakes and How to Avoid Them
A small mistake in Sudoku can ruin the whole puzzle. We show you what to watch out for.
Speed Sudoku: How to Become Faster
With the right technique and a little practice, you can drastically reduce your Sudoku solving times.
Looking for a specific pattern by name? That lives in the technique library: Techniques