Hi, I'm the co-creator of sudoku100. The site's applet solves sudokus blazingly fast, and allows you to view as little or as much of the solution as you want. This way, if you're having trouble getting off the ground with a particularly difficult sudoku, you can get started with just one or two squares without spoiling the rest of the puzzle.
The interface is easy to use and fast. It greatly improves upon the ubiquitous 'text field grid', which requires constant repositioning of the mouse. The sudoku100 interface allows you to enter a sudoku without taking your hands off the keyboard at all. As you'll see, this speeds up the process quite a bit!
The applet is written in java, so any modern browser will run it well.
Enjoy, and please recommend the site to anyone who would find it useful!
