Web Sudoku is an online destination for playing Sudoku, the number-placement puzzle. The site describes its offering as billions of free Sudoku puzzles, giving visitors a way to play the game online. Alongside its player-facing puzzles, Web Sudoku supplies Sudoku content to newspapers, books, magazines, websites, and other outlets.

This service supports publishers and digital platforms seeking puzzles for their audiences. The brand is associated with Gideon Greenspan and Rachel Lee, whose names appear on the site’s copyright notice. Web Sudoku also directs players to a newer server, providing an alternative location for accessing its online game.

Its focus is straightforward: make Sudoku puzzles available for individual play and provide puzzle content to other media. Whether visitors arrive to solve puzzles themselves or organizations need Sudoku material for publication, Web Sudoku offers services centered on the same familiar number-placement game. The site identifies its puzzles as free to play and presents the platform as a source of Sudoku entertainment and puzzle supply