Kammala jumla mai zuwa: Sosonko ya taka leda a tawagar Netherlands a gasar Olympics ta Chess sau goma sha ɗaya, a cikin 1974-84, da 1988-96. Ya lashe lambar yabo guda biyu: zinare a Haifa 1976, tagulla a
Nice 1974, da lambar yabo biyu: azurfa a Haifa 1976, da tagulla a Thessaloniki 1988.