Chess opening analysis and teaching software designed for beginner to average players to enhance their skills in playing chess.

Fritz claims to be the fastest program in the world for reading in, backcalculating, and using large opening books (about 1-100+ Mb, used in RAM memory). Users can develop their own personally special opening repertoire for gambit play or correspondence chess. Additionally, opening novelties can be found automatically if they are better. This is done by reading in a PGN with played games with end-evaluation by a chess engine.
Users can also read and add extensive comments for different opening positions and backcalculate their book x times faster than equally priced programs. This program allows users to edit positions and analyze them manually with quick recalculation. Users can build their own power books from PGN quickly and easily, read in huge PGN GM files amazingly fast, and import the ECO opening system (in PGN) and improve it.
New features include compressing databases by removing moves only read in once. Users can also analyze their book with the top-freeware chess engine Crafty (19.0), online while adding lines, or offline by analyzing the book. The program also allows users to import only "quality" PGN files by defining maximum length. Users can also export endnodes of their book to EPD format for import and analysis by chess engines. Only unique positions are stored, no matter how often imported, with full support of transpositions.
Finally, Fritz has an extensive opening book of about 60,000 positions, including most ECO opening variations. This is included with the program, along with information about every opening name defined until 2003. Fritz also allows users to play chess against others after Crafty book generation with the freeware Winboard interface on Internet chess servers. Fritz has a current rating on the Internet Chess Club of over 2900.
Version 4.0.2: N/A