Colorful Flash-based 4x4, 6x6 and 9x9 Sudoku games. Includes easy, medium and hard levels. JigSawDoku © 2006 Rachel Lee and Gideon Greenspan. All rights reserved.

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

Play online puzzles at one of four difficulty levels. Also includes a solver program and hints. Software for Pocket PC and Windows also available.

Includes Sudoku puzzle and strategies as well as a downloadable game and a 3D Sudoku tips .

Sudoku of the Day from Michael Mepham for London Daily Telegraph and Los Angeles Times solvers. 458, October 11: Competition Sudoku Puzzle - Moderate level of difficulty. Welcome to the Daily

Includes an overview of how Sudoku is solved, a monthly contest and a downloadable Sudoku game. Also includes a kids section and discussion forums.

Come to Only Sudoku and play unlimited Soduko games for free. Never play the same puzzle twice! Sudoku is the latest puzzle craze. Play the Japanese numbers game that?s driving everybody mad.

JavaScript-based Sudoku, available for syndication on other sites.

Sudoku es un rompecabezas matemático de colocación. El objetivo es rellenar una cuadrícula de 9×9 celdas dividida en subcuadrículas de 3×3 con las cifras del 1 al 9 partiendo de algunos números