Rubuta ci gaba don wannan sakin layi - Bayan Yaƙin Duniya na II, Dennis Morton Horne ya yi ritaya daga rundunar soja a matsayin kyaftin kuma ya yi karatu a Jami'ar Oxford, inda ya zama mai matukar damuwa da wasan chess. A cikin 1948 Plymouth International Chess Tournament, ya ci tsohon zakaran duniya Max Euwe. A shekara ta 1949 ya lashe matsayi na 2 a gasar zakarun Turai ta Switzerland. Ya kasance mai wasan chess mai kaifi, sau da yawa yana amfani da irin wannan buɗewar chess kamar King's Gambit. Dennis Morton Horne ya wakilci tawagar Ingila a gasar Chess Olympiad a shekarar 1952
, inda ya lashe lambar azurfa ta mutum. A cikin 1954, har yanzu ya halarci Taron Chess na Kasa da Kasa na Hastings, wanda, kodayake ya wuce Friðrik Ólafsson, har yanzu yana matsayi na ƙarshe. A cikin shekaru masu zuwa, ƙananan lokacin da Dennis Morton Hornespent ya yi a kan chess, ya fi zama damuwa da kwangilar kwangila.