Sudoku - Musharof Chy
Daily Sudoku Puzzle
Offers daily timed puzzle and four difficulty levels. [English/Portuguese/Spanish/German/French/Ita...
Sudoku Hints
Offers daily web-based puzzles with five difficulty levels. Includes solver, helper, and XML feed.
Fiendish Sudoku
Free daily sudoku puzzles at five difficulty levels. Online solving grid with hints and step-by-ste...
Bob Hanson's Sudoku Assistant
JavaScript-based gameboard and solver. Can use cross-hatch scanning and subset elimination.
Web Sudoku
Free puzzles with difficulty levels ranging from easy to evil. Provides print and online syndicatio...
Paul's Pages
Offers random, crafted, and non-standard puzzles. Includes hints and import/export tool.
Sudoku by Froggy
Generates 2x2, 3x3, and 5x5 puzzles with adjustable level of difficulty.
BrainBashers
Offers a daily Sudoku with six levels of difficulty, with an archive of old puzzles and an interact...
Sudoku Puzzles
Daily puzzles offered at four difficulty levels, available for play online or printed out. Includes...