The ChessBase Opening Encyclopedia 2026 is one of the company’s flagship products alongside the Mega Database and the ChessBase database program - currently ChessBase'26. For years, these programs have formed part of the essential toolkit for everyday chess work. From the very beginning, the Opening Encyclopedia has played a key role by providing a fast and efficient overview of the entire spectrum of chess openings. Lukas Köpl took a closer look at the latest edition of the Opening Encyclopedia and summed up his impressions.