25 Years Ago – ChessBase Endgame Academy: Karsten Müller's Legacy and the Interactive Revolution in Chess Training

At a club training ground in Hamburg, on an August afternoon in 2026, a young coach named Michael Kotyk sits before a screen, opening ChessBase's new endgame course. He is not watching as a passive spectator. He moves pieces, experiments, errs, then tries again. When the screen flashes 'Correct!', Kotyk nods as if he has just found a missing piece in his teaching methodology. That is the moment I realize: chess training has entered a new era, where interactivity is no longer an option but a prerequisite. The context of this story begins a quarter-century ago, when ChessBase first introduced Karsten Müller's courses to the world chess community. Müller is not merely a tournament player. He is an endgame specialist, an analyst capable of transforming the most complex positions into digestible lessons. His reputation was built over decades of publishing deep analyses in the Endgame Corner column, books on endgame theory, and countless video courses for ChessBase. When ChessBase declares that 'nobody is better than Karsten Müller in the endgame,' that is not just advertising — it is an acknowledgment of a status affirmed through thousands of hours of analysis and instruction. But the most interesting detail in this article lies not in the tribute to Müller. It lies in the detail Michael Kotyk emphasizes: 'Interactive options have become indispensable in video courses.' This statement reflects a structural shift in chess education. Traditional courses — where learners passively watch videos — are yielding to platforms that require learners to actively move pieces, solve puzzles, and face the consequences of their own decisions. This is not a minor improvement. This is a fundamental shift in pedagogy, where passive memorization is replaced by active practice. Analyzing the course content structure more deeply, I find the choice of 'Checkmate and Pawn Endgames' as the starting point a commendable pedagogical decision. Pawn endgames are the foundation of endgame technique — every player, from amateur to professional, must master these fundamental principles before advancing further. Checkmate patterns, on the other hand, are the first bricks in building pattern recognition and tactical calculation ability. Beginning with these two topics suggests a curriculum designed by sequential skill development logic, not purely commercial logic. What the article does not mention — and this is the blind spot I wish to expose — is the question of evaluation independence. This article is published on ChessBase's own platform, promoting ChessBase products, with praise from a young coach whose relationship with the company is not clarified. Is Michael Kotyk an independent reviewer? Or a paid partner? This lack of transparency does not diminish the value of Müller's content — already affirmed over many years — but it raises questions about the reliability of reviews within the ChessBase ecosystem. Smart buyers will seek independent reviews on forums like Reddit r/chess or Chess.com before deciding to spend. Another blind spot lies in the failure to disclose pricing and access structure. Is this course a one-time purchase? Or part of a subscription package? Do the interactive features require users to own the full ChessBase software, or can they be accessed via web browser? These questions directly affect the product's practical value. An excellent interactive course locked within an expensive software ecosystem will not suit all learners. Looking to the future, I believe the development of interactive chess education will continue to accelerate. Free platforms like Lichess have proven that endgame exercises can be offered free with high quality. This pressures commercial products to continuously enhance value to justify their prices. ChessBase's strategy — relying on the prestige of a recognized author like Müller and deep integration into its software ecosystem — is a solid defensive strategy, but it is not unbreakable. As I step away from the story of Kotyk and Müller's course, I recall one of the phrases I often use in my writing: 'Legends are written before their hour of birth.' Karsten Müller is no longer a legend awaiting discovery — he is an established legend. But the next generation of chess learners, those who will interact with this course, they are the legends awaiting birth. And how they learn endgames today will shape how they play chess twenty years from now. The empty stadium still holds the applause of the departed — and in the chess world, Müller's lectures still echo in the minds of thousands of players who have learned from him across generations. This new course is not just a product. It is a bridge connecting the heritage of the past with the interactivity of the future. And that bridge, despite its cracks from lack of transparency, is still worth crossing.