Major New Edition (2.03) , February 2024 Now based on analysis with latest top neural network engines. An overview, selection, and improvement of chess openings; both for all levels of play (up to GM level). With a unique and timeless 'repertoire', carefully selected for intermediate level (1.e4) and/or more advanced players. For the latter, in addition to a second, more in depth repertoire with 1.e4, an optional repertoire is given with 1.d4 (besides some gambits, or general opening systems as well). The most suitable opening moves were selected by meticulous analysis, with the latest top neural network engines to determine the best moves and to build up a rocksolid B&W 'repertoire', for two categories of players. Not only mentioning names of the major openings, but also of most sub-variations. Compared with up to date opening books and actual GM games. An ideal opening study book. Many -colored- diagrams to enhance memorization and understanding. Only opening book a chess player needs until master level.