Games

Free daily sudoku puzzles at five difficulty levels. Online solving grid with hints and step-by-step solutions.

A solver program with an article explaining the algorithm used.

Play sudoku puzzles online for free.

Java-based generator offers four levels of difficulty. Includes view of solution.

Play fast-paced online sudoku races for free.

Offers up to four difficulty levels.

JavaScript-based gameboard and solver. Can use cross-hatch scanning and subset elimination.

Free puzzles with difficulty levels ranging from easy to evil. Provides print and online syndication.

Offers daily web-based puzzles with five difficulty levels. Includes solver, helper, and XML feed.

Offers random, crafted, and non-standard puzzles. Includes hints and import/export tool.

Offers daily puzzle, downloadable games, and instructions.

Daily puzzles offered at four difficulty levels, available for play online or printed out. Includes rules and archives.

Includes a generator.

Interactive sudoku game with high score tracking. Includes solution strategies.

Clean site with many puzzles at all levels, solvable online.

Solve Sudoku in browser at the same time as someone else and try to be first. Available in English and German. Does not work in IE.