Modern Horseback Archery: Kassai invented the competitive rule system of horse archery in the late 1980s, and started to propagate this new sport. Lajos Kassai popularized the modern sport, first in Hungary, and from the 1990s in the rest of Europe, the United States and Canada. He familiarized himself with Zen-archery in Kamakura, Japan, and travelled to Shao-lin in China to study.