Sudoku is a great activity to sharpen the mind. The object of Sudoku is to fill in the empty spaces of a 9x9 grid with numbers 1-9 in such a manner that every row, every column and every 3x3 box contains all numbers 1 through 9. It's fun and challenging for all ages. We also have 4x4 Sudoku for younger kids and 16x16 Sudoku (Hexadoku) for the enthusiast who wants a real challenge!

Below you can choose to play 4x4, 9x9 or 16x16 puzzles. Difficulty levels are: Easy, Medium, Hard, Very Hard and EXTREME!

Deluxe Sudoku

PRINT Sudoku puzzles! You have the choice of 4x4, 9x9 & 16x16 "Genuine" Sudoku with many customization options. Deluxe Sudoku is slightly SLOWER to generate due to all of the analytics we do on each puzzle. Difficulty is determined by the number of strategies used to solve the puzzle.

Legacy Sudoku

Our popular 9x9 Sudoku. Generate and print very quickly. Difficulty is determined by removing numbers from a completed puzzle, the more you remove, the higher difficulty given to the puzzle. We highly recommend our 'Deluxe Sudoku', but this 'Legacy' option is more popular with some users. Print up to 4 puzzles per page.

Play Sudoku Online (Selected)

Play Sudoku online for free. Unlimited puzzles in 4x4, 9x9 or 16x16. Easy, Medium, Hard, Very Hard and Extreme Sudoku Puzzles can be played online

If you have comments or suggestions, please use the comments at the bottom of this page. We evaluate all comments to help make our puzzle makers better so you will keep coming back for more!

Ad Blocking: Advertising provides the crucial revenue necessary to provide free content and applications on this website. We need this revenue to continue offering our free services. We currently have 3 options for our users:

Ad blocking users:PRINT: Free, 1 printable puzzle per page (9x9 only, medium difficulty). PLAY: Play 9x9 Medium difficulty
Non-ad blocking users:PRINT: Free, up to four (9x9) printable puzzles per page or one (16x16). PLAY: Play 4x4 (any difficulty), 9x9 (any difficulty except extreme), 16x16 (easy difficulty only)
Premium Subscription: PRINT: Up to nine puzzles (9x9 and 4x4) or up to four 16x16 - any difficulty. PLAY: Any size and any difficulty. Over 100 fonts, and more options!

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Sudoku	4x4	9x9	16x16
Easy	Free	Free	Free
Medium	Free	Free	Members
Hard	Free	Free	Members
V. Hard	Free	Free	Members
EXTREME	Free	Members	Members

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Play Sudoku Online

Play unlimited free Sudoku puzzles with varying degrees of difficulty!

Deluxe Sudoku

Legacy Sudoku

Play Sudoku Online (Selected)