This page lists various online resources available for solving sudoku puzzles.

  • Facebook Sudoku

     HashCube's Sudoku on facebook is the most popular sudoku application on facebook. It has variety of interesting features like color coding, timer, challenge, tournaments, graph etc. The app records the time one takes to solve sudoku. It is also possible to compare your sudoku timings with your friend's timings in the friend's stats page. Tournaments are conducted almost once in every two weeks. Lucky winners amongst the top scores get real prizes. Click here to play HashCube's Sudoku.
    Online Facebook Sudoku

  • SourceForge Sudoku

     SourceForge Sudoku is one of the most popular open source sudoku puzzle solver. It is written in Java and lets you create and solve sudoku puzzles. It is possible to generate and solve sudoku puzzles of various dimentions. The popular dimentions listed in the website are 2x3, 2x4, 3x3, 2x5, 3x4, 3x5, 4x4, etc. The screenshot below displays two 4x4 sudoku puzzles generated by source forge sudoku.
    Source Forge Sudoku

  • ColorCoded Sudoku

     ColorCoded Sudoku on www.sudoku-solver.net is one of the most popular sudoku application on web. As the name suggests it has color coding. It also has other interesting features like timer, graph, hint, solve etc. It has sudoku puzzles of four difficult levels namely easy, medium, hard and evil. The application has a very intersting feature called pencil. It lets you to enter multiple numbers in a single cell. Click here to play ColorCoded Sudoku.
    Online Color Coded Sudoku

  • Wikipedia's Sudoku

     Wikipedia's Sudoku is the the first result on Google when one searches for Sudoku. The page explains about history of sudoku, sudoku variants, mathematics of sudoku, sudoku competitions around the world, etc. The image below is the sudoku puzzle printed on july 6th 1895 in La France newspaper. The image has been taken from wikipedia.
    Wikipedia Sudoku