The Fritz Powerbook 2021 contains 25 millions opening positions, derived from 1.7 million high class tournament games. Together with each position all relevant information is stored: all moves that were played in the position, by players of what average rating, with what success and performance results.

Discover exciting and tricky new lines and practice them against Fritz
The Fritz Powerbook 2021 represents the state of the art of current openings theory. New: For the first time the FritzPowerbook were derived also from the best 100,000 games from the Correspondence 2020 Database to enhance even more the theoretical value of moves given by the book. With the 2021 edition you get 3 Books: Fritz Powerbook 2021, Strongbook and the new CorrBook.