About Hue Sudoku

Hue Sudoku is a free online Sudoku game that gives every digit its own colour, so patterns are easier to see and the puzzle is more fun to play.

The puzzles are generated freshly in your browser, with four difficulty levels from Easy to Expert. Every puzzle is checked to have exactly one solution. The game works on phones, tablets and computers, with pencil notes, undo, hints and a timer that remembers your best times.

The site is an independent project, and it is supported by advertising so that it can stay free. We never ask you to sign up or pay.

Curious where the puzzle came from? Read the history of Sudoku.

Contact

Questions, bug reports or ideas? Email cfcwatches@gmail.com.

See also our privacy policy.