After sudoku became so popular many different applications started to appear, one of them is know as a sudoku solver. What a sudoku solver does is help you complete any unfinished puzzles that you may be stuck on. While many people feel that using a solver may take away from the enjoyment that completing the puzzle without it brings. Using a sudoku solver does at least allow you to see the finished puzzle if you have tried everything and just can't get the final cells completed.
Doing a search on yahoo or any of the major search engines will bring a wide variety of different solvers you can use. They work by using a simple algorithm to quickly calculate all the possible solutions to your unfinished puzzle. You simply enter in all the digits on either a printable sudoku puzzle your having trouble with or any puzzle that you wish to solve, hit a button and in just a few seconds the finished puzzle will appear on your screen.
Now that may sound extremely simple and the reason that it does is because it is! Sudoku solvers have been around for years and as new ones appear they just keep becoming better and better. The old basic interfaces that first came out are being replaced by more visually appealing models. In fact I find that some solvers are so well made these days that it's a joy to use them.
Some solvers also come with an online sudoku puzzle that you can play online. While I could list a few of the more popular ones, I think it's best that you do a search and find one that you enjoy the most. While no one really knows how long sudoku will stay as popular as it is, while it remains more and more applications and software will keep being made. Those who love sudoku will continue to have a wide range of utilities to help them enjoy this addictive puzzle. While sudoku solvers may be old, they continue to improve and only the future can tell just how advanced they may become.