Printable Sudoku Puzzles
From first-timer 4×4 grids to proper hard 9×9 challenges, every puzzle is generated with a guaranteed single solution. Play it online right on the page with the built-in keypad, or print the PDF with its answer page. A fresh batch is one click away.
FAQ
Are these puzzles guaranteed solvable?
Yes, and more: each puzzle is checked to have exactly one solution before it reaches the page. No guessing required, ever.
Can I play sudoku online here for free?
Yes, every sudoku page has a Play online mode with a tap keypad and a Check button that verifies your digits against the unique solution. No account, no app, no ads inside the board.
Can I print a big batch for a road trip?
Turn on 5 versions before downloading and each PDF carries five fresh puzzles plus solutions. Repeat with new clicks until the glovebox is full.
Where should a beginner start?
Kids and first-timers start at 4×4, where the rule is visible at a glance. Move to 6×6 once that feels easy, then easy 9×9. The hard 9×9 sheets assume comfortable pencil-mark habits.
Are these real sudoku or random grids?
Real ones: the generator builds a full valid solution, then removes digits symmetrically while checking after every removal that exactly one solution remains.
How many puzzles per page?
9×9 pages carry two puzzles, smaller grids carry four. Solutions for every grid arrive on the final page of the PDF, with filled digits in green.