Kammala jumla mai zuwa: Koltanowski daga baya ya zagaya Amurka ba tare da gajiyawa ba har tsawon shekaru, yana gudanar da wasannin chess da kuma nunawa a lokaci guda a ko'ina. Bayan rashin nasararsa a gasar US Open ta 1946 a Pittsburgh, bai sake buga wasan chess ba, sai dai wasanni biyu a matsayin memba na tawagar Amurka a gasar
10th Chess Olympiad (Helsinki 1952), samun wasa tare da Soviet Grandmaster Alexander Kotov, daya daga cikin 'yan wasa mafi karfi a duniya, da kuma wasa tare da Hungarian International Master Tibor Florian, a cikin wasan da Koltanowski ya yi nasara.