Sudoku Tips and Articles
Guides to solving Sudoku and Killer Sudoku, plus ways to remember the world's flags. Pick an article, then try it on a live puzzle.
3 Mistakes Almost Every Sudoku Beginner Makes
Guessing, overusing notes and scanning cell by cell: the three habits that keep beginners stuck, and what to do instead.
Read more →Paper or Screen: Which Sudoku Format Suits You
Pencil and paper or a phone and a screen: what each one does better, and how to combine them without losing either.
Read more →How to Remember World Flags While You Play
Sort flags into families, study the look-alike pairs together and use the game's own tools to learn all 194 flags without flashcards.
Read more →Why Play Sudoku Every Day, and How Long Is Enough
A short daily puzzle is easier to keep than a long weekend session. How to build the habit, what to do on busy days and when to stop.
Read more →Killer Sudoku for Beginners: Cages, Sums and the 45 Rule
How cages work, which sums have only one possible set of digits, and how the 45 rule opens up the grid.
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