A year after the establishment of the Olsztyn voivodeship (1946), there were created on its territory the first state horse pedigree breeding centres. Thus, there was launched the process of breeding, which in its initial stage had no specific direction. Only when the State Department of Horse Breeding took a decision to rebuild the East Prussian breed and were further actions ordered. Since 1948, having survived the turmoil of war, Trakehner horses with documented pedigrees were located at the State Stud at Liski. Its further dynamic development was initiated. For many years, it was continued byJacekPacyński, considered to be an expert on horses and a keen supporter of equestrian sport. He, as one of the pioneers, co-organized first, unofficial, intercollegiate equestrian competitions in the region. Over the years, they were transformed into professional competition. Good sports results promoted native breeding and facilitated the sale of horses. J. Pacyński, as the head of the leading Polish stud, also paid much attention to the improvement of social conditions of the team. Thanks to his efforts, in the small village of Liski, there functioned a factory day room with up-to-date press and radio, and in later years also television. It was not only the sportsmen themselves who took advantage of the mounts and the charms of the breeding centre, but also recreational riding enthusiasts.