Edited sentence: Chessmaster Challenge is just a Chessmaster 10th edition rip off.Do not download or buy.It has way more features and options.It is just a small version of Chessmaster 10th Edition.It only offers 6 different chess sets as opposed to Chessmaster 10th Editions 35 sets.Plus the graphics are dodgy.The Chessmaster 10th Edition is a much larger and better program.The Chessmaster Challenge progam is only 10 mb in size.You can not zoom into the chessboard