Daily Sudoku Puzzle - Offers daily timed puzzle and four difficulty levels. [English/Portuguese/Spanish/German/French/Italian] 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-step solutions. Goobix.com - Offers up to four difficulty levels. 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 syndication. 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. Su-Doku.net - Offers daily puzzle, downloadable games, and instructions. BrainBashers - Offers a daily Sudoku with six levels of difficulty, with an archive of old puzzles and an interactive assistant. Sudoku Puzzles - Daily puzzles offered at four difficulty levels, available for play online or printed out. Includes rules and archives. Braingle Sudoku - Interactive sudoku game with high score tracking. Includes solution strategies. Seeing With C - Sudoku Solver - A solver program with an article explaining the algorithm used. Sudoku Zone - Play sudoku puzzles online for free. Jaap Scherphuis' Generator - Java-based generator offers four levels of difficulty. Includes view of solution. Picture Sudoku - Uses pictures instead of numbers. Speed Sudoku - Play fast-paced online sudoku races for free. Creative Spark Studios: Sudoku - Includes a generator.