In 1974, winner of the first World Computer Chess Championship, held in Stockholm. The program was written at the Institute of Control Science in Moscow. It scored 100% ahead of 11 other entries. In 1975, the KAISSA programmers wrote a program to analyze Queen and Pawn endings. Grandmaster David Bronstein had one of these endings in a tournament game in Vilnius in 1975. When he adjourned his game, he telephoned KAISSA’s programmers to ask them to look up their program’s library and find the best possible continuation for him. He played according to the program’s library and won. Bronstein said that the solution was so beautiful, that he would have never thought of it himself.