Welcome to Sudoku-Online.nu!
Here you can play sudoku onlin for free. Sudoku-Online.nu is for everyone! From the sudoku lover with years of experience, to the complete beginner. We've got everything, and thanks to our database of several hundred thousand sudokus, the variations are almost limitless!
Play Sudoku!
Choose your difficulty, or play a random round. Whatever your preference, you'll get to play a fun and challenging sudoku!
How Sudoku works
A sudoku consists of nine times nine squares which in turn are divided into nine bigger squares. To solve a sudoku, you need to position the numbers 1-9 in such a way that no number appears more than once on the same row, column or big square.
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