Great free Sudoku is everywhere — here's where to find the best
The good news: you never need to pay for Sudoku. The best puzzle experiences on the internet are completely free. The sites on this list offer unlimited puzzles, clean interfaces, and no mandatory sign-up. We've filtered out sites that put key features behind paywalls and only included ones where the core solving experience is entirely free.
From the NYT's polished daily puzzle to Krazydad's enormous archive of free printable booklets, there's something here for every type of solver.
Cracking the Cryptic (YouTube)
The world's most popular Sudoku YouTube channel.
Reddit r/sudoku
The most active Sudoku community for discussion and help.
SudokuWiki
The industry standard for logical step-by-step analysis.
Sudoku.coach Learn
The best place to learn Sudoku logic from scratch.
Krazydad Sudoku
Thousands of free printable Sudoku books in PDF format.
Sudoku.com
The most popular destination for classic Sudoku with multiple difficulty levels.
Sudoku Exchange
Clean, modern interface for sharing and solving Sudoku puzzles.
Sudoku.coach Solver
Advanced solver with educational step explanations.
The New Sudoku Players Forum
The primary forum for advanced Sudoku techniques.
Sudoku Cup
Competitive Sudoku tournaments for global players.
WebSudoku
Billions of free puzzles featuring the famous 'Evil' difficulty setting.
AARP Sudoku
Keen on brain health? A favorite for casual daily solvers.
Enjoy Sudoku Forum
The home of serious Sudoku discussion and analysis.
Sudoku-Solutions
Step-by-step solver to help you learn advanced logic.
Sudoku Professor
Video-based lessons to master your Sudoku game.
247 Sudoku
Seasonal and classic Sudoku puzzles with a simple interface.
CardGames.io Sudoku
Part of a massive collection of classic browser-based games.
Arkadium Sudoku
High-quality game graphics and smooth browser performance.
SudokuSolver.app
Modern, fast, and mobile-friendly solver app.
DadsWorksheets
Educational Sudoku puzzles designed for students.
Find Even More Sudoku Resources
Browse our full hand-curated directory of 100+ Sudoku sites, apps, and books.