Barden organised weekend junior invitation events at which the best prospects played a tournament and had coaching from masters between games. They were also introduced to top master chess at the annual Evening Standard weekend open and via grandmaster simultaneous exhibitions. The model was the USSR's own programme in the 1930s, when future masters scored impressively in exhibitions against world-class masters José Raúl Capablanca and Salo Flohr during the 1935 and 1936 Moscow tournaments. Very few juniors in the 1970s had international ratings, so Barden compiled his own world ranking lists for every age group from under-18 to under-10, updating the figures at monthly or weekly intervals and posting the results at the invitation events.