In the spirit of open computing and an open internet, you may use the Sudoku Analyzer free of charge on an unlimited basis. Use it as much and as often as you like, and share it freely with your friends. If you enjoy it, please think kindly thoughts toward the author (me, Jerry DePyper). If you are a believer, let that include a little prayer of blessing.
(For example, to generate puzzles for publication) - If there is a monetary end involved, you really ought to share an appropriate portion of the gain with me, who have worked many long hours on this page. It's your conscience.
To license this or other work of mine, to incorporate it into your own website, or for other custom work, let's talk about your goals and arrange terms to our mutual benefit.
Please feel free to contact me
with your questions, suggestions, comments, bug reports, contributions, etc.