Free sudoku online. Five levels, one click.
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Everything sudoku, in one place
Daily puzzles, variants, free printables, strategy guides and tools. Pick whichever you need.
Daily sudoku
A fresh hard or expert puzzle every day with a live solve counter.
Sudoku variants
Killer, jigsaw, samurai, X-sudoku, mini 6×6, 12×12 and 16×16.
Printable PDFs
Free puzzle packs for classrooms, travel and screen-free time.
Sudoku strategies
Eighteen techniques explained in plain English with visual examples.
Solver and tools
Finish a tough puzzle, generate a new one, or check if it is valid.
How to play sudoku
Learn the rules in two minutes if you are completely new.
Read more, solve smarter
Practical writing on sudoku habits, technique and getting unstuck.