How we calculate our overall rankings
This list combines user rating with monthly visit volume — a site rated 4.9 with 2 million monthly visitors ranks above one rated 4.9 with 50,000 visitors, because real-world usage signals genuine quality that pure ratings alone can miss. Every site in our directory of 100+ is eligible and this list is updated regularly.
Unsurprisingly, the NYT leads — but the rest of the top 15 represents an excellent mix of categories, from competitive platforms to learning tools.
NYT Sudoku
The gold standard for daily Sudoku puzzles.
Cracking the Cryptic (YouTube)
The world's most popular Sudoku YouTube channel.
Reddit r/sudoku
The most active Sudoku community for discussion and help.
SudokuPad
The premier app used by Cracking the Cryptic for variants.
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.
F-Puzzles
The ultimate tool for creating and sharing your own Sudoku variants.
Logic Masters Germany
The premier portal for hand-crafted Sudoku variants.
Grandmaster Puzzles
Exceptional puzzles from the world's best setters.
Sudoku.com
The most popular destination for classic Sudoku with multiple difficulty levels.
The Guardian Sudoku
Tough daily grids from the UK's leading puzzle editors.
Killer Sudoku (Easybrain)
Master the logic of cages and sums with this popular variant.
Sudoku Exchange
Clean, modern interface for sharing and solving Sudoku puzzles.
Sudoku.coach Solver
Advanced solver with educational step explanations.
Find Even More Sudoku Resources
Browse our full hand-curated directory of 100+ Sudoku sites, apps, and books.