This Nalimov DVD includes the most complete version of the 3-4-5 piece NALIMOV Endgame Tablebases (290 files). It is fully compatible with Chess Assistant 6 or 7, Comprehensive Chess Endings, Fritz 7/8, Tiger 14/15, Shredder 7, Junior and many other engines. These Nalimov Endgame Tablebases will tell you exactly how to play out any position with 5 or less pieces are left on the board, since they are very instructive while analyzing endgames with a small number of pieces. The program knows whether the position is won, lost, or drawn, and how many moves it will take to win or draw, assuming best play by both sides. You can use the tablebases while viewing games, analyzing, or playing against a computer. The Nalimov Endgame Tablebases require a minimum of 64 meg of RAM and 7.5 GIG(!) of hard disk space. The program will run under Windows 95/98/2000/NT/ME/XP. A DVD DRIVE IS REQUIRED TO ACCESS AND RUN THIS PROGRAM. A NORMAL CD-ROM DRIVE IS NOT SUFFICIENTReturn Information for Software & DVDsComputer Software and DVDs can only be returned or exchanged if the product is in its original,sealed packaging and has not been installed or used in any way. Once you open the packaging of a Computer Software or DVD title, it can only be exchanged for the same title if the original media is defective. There are NO exceptions to this rule.