freesabaiPrintable sudoku
A fresh 9×9 sudoku every time you press the button, easy, medium or hard, each checked to have exactly one solution. Print one or two to a page, with the answer key on its own page.
Getting the tool ready…This tool needs JavaScript. If this message stays for more than a few seconds, JavaScript is turned off or the page did not load completely: turn JavaScript on or reload the page.
The sheet you make is yours: use it in class, print and sell it or sell the file, no credit needed. Everything is made in your browser; nothing is sent anywhere or kept.
How to use it
- Pick the level and how many puzzles per page. The sudoku appears on the right at once; "New random sheet" gives another.
- Press "Print / Save as PDF". The answer key is the last page: the given digits in bold, the filled-in ones lighter.
Good to know
- The rules: fill in 1 to 9 so that every row, every column and every 3×3 box holds each digit exactly once.
- Every puzzle starts from a complete solution; digits are then taken out one at a time, and a digit stays out only while the puzzle still has a single solution (the solver in the page counts up to two). So every puzzle can be solved by reasoning, without guessing.
- The level is the number of empty cells (30 / 45 / 55). At the hard level it is sometimes impossible to take out 55 digits while keeping one solution; the page then gives as many as it can (about 50 or more). Two puzzles with the same number of blanks can still differ in how hard they feel.
- Nothing is saved: a puzzle is gone when you close the page, so print it or save the PDF first. For another brain game, try the maze maker.
Report a problem or suggest an idea
Would you like 4×4 or 6×6 sudoku for small children, or other levels? Tell us on the feedback page.
More worksheet makers
Language and words
- Handwriting practiceThai consonants, vowels, digits, A-Z or your own words, as dashed letters to trace on three-line rows
- Word search maker3-20 words, Thai or English, hidden in a grid of letters with diagonals and backwards as options; the key rings them
- Word scrambleEach word with its letters mixed up (Thai by consonant with its marks) and a line to write the answer, with a key
- Matching worksheetword = meaning lines, 3-15 pairs, in two columns with the right side shuffled; for vocabulary, translations, numbers and words
Maths
Puzzles
Questions and answers
Does every sudoku really have one solution?
Yes. Each puzzle starts from a complete grid, and digits are taken out one at a time only while the puzzle keeps a single solution, so it can be solved by reasoning alone.
What is the difference between easy, medium and hard?
The number of empty cells: 30, 45 and 55. At the hard level it is not always possible to empty 55 cells and keep one solution; the page then empties as many as it can.
How many puzzles fit on a page?
One or two. The answer key is the last page, with the given digits in bold and the filled-in ones lighter.
Rate this tool
Tap the stars, then add a word if you like
Thank you! Your rating helps make the tool better
No sign-up. No name or e-mail is kept; a comment is kept for 3 months · Details