11/8/2025 – "The perfect sacrifice is every chess player's dream," says Grandmaster Krishnan Sasikiran in the description of his Fritz Trainer! But when exactly is a sacrifice perfect? How can you correctly assess and evaluate sacrifice ideas, and how can you handle them when complications arise? The Grandmaster from India now wants to show ambitious chess players the answer to this question with his Fritz Trainer. Lukas Köpl has summarised the essence of the Fritz Trainer in his review.

10/11/2025 – The Ragozin Defence is one of those opening systems that are very popular in modern tournament chess. It combines solid classical elements with dynamic ideas. For those looking for active and dynamic play against 1.d4 without taking any significant risks, Grandmaster Surya Ganguly has created a high-class Fritz trainer in "Reinventing the Ragozin". The course impresses not only with its modern repertoire against the Queen's Gambit Declined in impressive depth, but also with valuable insights into the modern opening preparation of current top players. Lukas Köpl has taken a close look at Ganguly's Fritz trainer.

9/27/2025 – The technique of calculating variations is perhaps one of the most important techniques that defines a chess player's playing strength. An entire generation of top players, including the current World Champion Gukesh Dommaraju, have a reputation of being true calculating machines. David Navara brings the secrets of calculating variations from the perspective of an absolute top player with a peak rating of 2751 to your home. Lukas Köpl, himself a trainer and advocate of the technique of calculating variations, reviewed David Navara's contribution. | Photos: ChessBase

7/24/2025 – In his Fritz Trainer, Grandmaster S.P. Sethuraman presents a modern repertoire for the classical Sicilian. Reviewer Lukas Köpl, an experienced tournament player and licensed trainer with over 15 years' experience, introduces the course and shows how ambitious players and Sicilian fans can benefit from Sethuraman's work.