Fritz Powerbook 2018 (DVD)The current openings theory with 1,5 million games The Fritz Powerbook 2018 contains 21 millions opening positions, derived from 1,5 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 2018 were derived are also included on the DVD. This means