SuDoku has been a craze since 2005 and nearly each newspaper is publishing daily SuDoku puzzles. But a large number of people, though interested, have not yet solved their first SuDoku... reason being no guidance received.The SuDoku Solvers available on net are mostly based on backtracking method which a human being is not capable of following, and the steps taken for solution are not shown by such solvers. SuDoku Tutor 3i is a software that runs on Internet Explorer 5 and above and is capable of showing step by step solution of a user-given SuDoku Puzzle. This software also supports Jigsaw SuDoku puzzles.