Fritz Powerbook 2020 (DVD)The current openings theory with 1. 7 million games Fritz Powerbook 2020 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. The games from which the Fritz Powerbook 2019 were derived are also included on the DVD. This means