ECO 2025 - upgrade de la 2024 (download)

The Opening Encyclopaedia offers quick access to all openings. The openings are sorted by name and ECO code via the menu for quick and easy access to your favorite openings. Opening Tutorials give a quick yet comprehensive overview of all established openings to help every chess player find the most suitable opening according to their personal preferences. 100 high-class opening videos are included in the Encyclopaedia 2025, from our popular ChessBase Authors. Daniel King, Dorian Rogozenco, Rustam Kasimdzhanov, Mihail Marin, Ivan Sokolov, Adrian Mikhalchishin, Leon Mendonca, Jan Werle, Luis Engel, Rainer Knaak, Robert Ris, Felix Blohberger and many other grandmasters present new opening ideas clearly and vividly. The number of articles in the Opening Encyclopaedia is growing – it now contains 1,524 and the included database contains all games from all opening articles.

One more highlight:Grandmaster Dorian Rogozenco presents opening trends in world-class chess. You can look forward to a total of 9 videos on the French, Sicilian, Najdorf, Ruy Lopez, Italian, Petroff, English, Queen’s Gambit Declined, from the entire year 2024 to spring 2025. A separate video “early deviations” shows the trend of leaving the territory of the established main variations. An approach that is becoming increasingly popular in grandmaster chess. All this makes the new Opening Encyclopaedia 2025 an indispensable reference work for every tournament player.

• 1,524 special theoretical databases – analyses with annotated games & ideas by Grandmasters
• Over 40,000 illustrative games
• 7,850 opening surveys, 300 new or updated
• 100 opening videos. Total duration: over 35 hours
• Grandmaster Lectures : Dorian Rogozenco: The latest trends (9 Videos)

Opening Encyclopaedia 2025

• The opening encyclopedia 2025 offers quick and convenient access to all openings. The opening articles are accessible by opening name and alternatively also via the “ECO list”.
• Opening tutorials: What openings are there actually? What is the right opening for me? Let the opening tutorials briefly introduce you to all the established openings and find your favorites.
• Videos in the encyclopedia: 100 first-class openings in video format commented by the most popular ChessBase authors: Daniel King, Mihail Marin, Jan Werle, and many more. (All videos in English; total running time: over 35 hours).
• Professional opening analyses by grandmasters & international masters: You will find 1,524 opening articles under the menu item “Ideas for your repertoire”!
• The game database with over 40,000 games contains the games from the opening articles, including all sample games. You can find this database in the menu on the left under the “Game database” tab.
• Opening overviews: Get an overview of the current state of chess theory. Grandmaster Lubomir Ftacnik has created 372 new opening overviews for the Lexicon 2025! There are 7,983 overviews in total!
• Find additional material in the ChessBase Shop: If you want to know more about an opening, you can go to the corresponding opening section in the ChessBase Shop with one click. There you will find video courses or further courses by the author on other openings.