GM Dorian Rogozenko: "The Opening Encyclopedia offers an ample and unique overview about the opening theory. In multiple videos and theoretical articles highly qualified trainers analyze and explain different opening variations and present them in a compact and easy-to-learn formats. Literary everyone, from beginners to Grandmasters, can find many ideas to expand their opening repertoire."

Anish Giri: „ChessBase is the software you really need. It is definitely essential and useful.“

GM Dorian Rogozenko: "ChessBase is an absolute must-have tool, whether you want to get to the top, or just improve your chess understanding at any level."

GM Hou Yifan (World Champion 2010-2017): "When people asked me to recommend software for chess, the first word that come to my mind is ChessBase. I have used it for all of my chess career."

GM Rustam Kasimdzhanov: "Nowadays I don’t know a single chess player, amateur or 2800, that does not use ChessBase, and for good reason."

GM Teimour Radjabov: "I have been using CBM for a long time and it is very useful, because you can see all the recent games, annotated by the best players in the world."

GM Vishy Anand (World Champion 2007 – 2013): "ChessBase 15 - awesome! Love the reference and the replay so far. The search booster alone makes life better!"

GM Daniel King: "ChessBase is essential for instant access to past games, allowing one to prepare new ideas for the future."

GM Dorian Rogozenko: "Whether you want to surprise your opponents with unexpected moves right from the beginning of the game, learn a complex theoretical variation, or understand the newest developments of the modern chess theory – the Opening Encyclopedia provides you with everything you need for that."

GM Le Quang Liem: "ChessBase is amazing, great software for chess players. It has changed the way chess players prepare and study chess – a very good thing for us."

GM Dorian Rogozenko: "It is my deepest conviction that the Opening Encyclopedia is the best product around in the field of opening theory, improving your knowledge about the openings and helping you to become considerably stronger in practice."

GM Garry Kasparow (World Champion 1985-2000): "ChessBase is the greatest development for chess since the invention of the printing press."

GM Wesley So: "For a major part of my career, Chessbase has been an invaluable, absolutely go-to site, for competition prep. Megabase and Corrbase are indispensable tools that guide your game by leading you to creative ideas and giving you the power to shape them."

GM Adrian Mikhalchishin: "I like CBM in different ways - as a reader, I prefer the Endgame Corner by Karsten Mueller - really well done. As a trainer, I use CBM Tactics to warm up my pupils, sometimes Opening Surveys, which are useful for certain openings and sometimes Strategy, the subjects of which are always instructive."

GM Xie Jun (Former World Champion): "Chess Base have companied my chess study for many years, it is a wonderful program and web site."

GM Vishy Anand (World Champion 2007 – 2013): "ChessBase has changed the chess world forever. It is more or less unthinkable now not to work with it."