Traditional Sudoku
Every row, every column and every 3x3 box holds the digits 1 to 9 exactly once.
Play Sudoku online — free, a new puzzle every dayFree Sudoku to print and play online
Since 2005 the best daily sudokus to print, download and play online.
Do you know sudokus? They are very popular logic games in which you will have to fill a 9x9 grid with numbers without repetition. If you don't know how to play or want to know some techniques and tricks to complete them, here are the rules and some tips.
At PrintSudoku.com every day we publish a completely new sudoku in 10 difficulty levels, including the magic, X, killer and samurai variants to play online and also high quality sudokus to print completely free.
We also have a huge archive of original sudokus since 2005 (more than 8,000 original sudokus) to print or play online.
Give them a try! And if you like the site, share it with your friends.
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How to play Sudoku?
Instructions
- Choose the sudoku difficulty level you want from the dropdown menu at the top. You have 10 levels to choose from, from very easy to evil, plus the magic, X, killer and samurai variants.
- Fill in the cells. You can do this by clicking on the cell directly or by selecting the cell you want and clicking on the numeric keypad on the right.
- When you fill everything in correctly, a congratulations message appears. If you're unsure while playing, turn on auto-check: it will flag any possible mistakes right away.
If at any time you want to check your numbers you can do so by pressing the check button. You can also show the sudoku solution or start over. Good luck!
What is Sudoku?
History
Sudoku (also written su-doku or su doku) is the Japanese logic puzzle that took over the world. Its history is fairly recent: as early as the 19th century some French newspapers printed similar number puzzles, but the sudoku we know today was developed in Japan in the 1970s. From 2005 (the year printsudoku.com launched) the game spread internationally. In Japanese, sudoku means “single number” (sū = number, doku = alone).
Sudoku rules and difficulty
The rules are simple: a grid of 9x9 cells, divided into nine 3x3 boxes, must be filled so that every row, column and box (each a set of 3x3 cells) contains the numbers 1 to 9 without repetition. You start, of course, from a grid with some positions already given. In general, the fewer starting numbers a sudoku has, the harder it is — but don't be fooled: difficulty doesn't depend on that variable alone. At PrintSudoku.com we always make sure the sudokus we generate are fun and precisely tuned in difficulty.
Sudokus must have a unique solution to be correct.
Sudoku variants
Besides the classic grid we publish four variants every day. Each one keeps the rules above and adds a twist of its own, and each has its own free book of printable PDFs.
Magic Sudoku
Both main diagonals also hold the digits 1 to 9. And in every box, if N cells are coloured, those cells hold exactly the digits 1 to N.
Magic Sudoku to print (free PDF)Sudoku X
Each of the two main diagonals also holds the digits 1 to 9 without repeating.
Sudoku X to print (free PDF)Killer Sudoku
No digits are given: every dashed cage shows the total its digits must add up to, and no digit repeats inside a cage.
Killer sudoku to print (free PDF)Samurai Sudoku
Five overlapping grids: the corner boxes are shared, so every grid constrains the others.
Samurai Sudoku to print (free PDF)