About Sudoku99

Sudoku99 is built for logic lovers. We offer an unmatched collection of handcrafted puzzles, structured by difficulty and curated for a pure solving experience.

Our Mission

Deliver logic-only puzzles – no guessing, no randomness.

Provide 20 structured levels from beginner (36 clues) to expert-gold (17 clues).

Guarantee a unique solution for every puzzle.

Enable printable versions for offline play and study.

Offer a smooth, ad-light, distraction-free solving interface.

Support daily challenges and historical rankings without registration.

Never reuse or duplicate puzzles – over 150,000 unique puzzles and counting.

What Makes Us Different?

Are the puzzles computer-generated?: Every puzzle is verified and hand-selected from algorithmically generated candidates to ensure logical solvability and uniqueness.
Can I use these puzzles for my own books or projects?: No. All puzzles are protected and licensed solely for play and print through Sudoku99. For partnerships, contact us directly.
Do I need an account to play?: Absolutely not. Sudoku99 is open and instant-access. No signup, no email collection.