<prompt> Pedzisa mutsara unotevera: Larsen akaberekerwa muTilsted, pedyo neThisted muDenmark uye akadzidza paAalborg Cathedral School. Muna January 1942 Larsen akabatwa nezvirwere zvakawanda zvevana. Kunyange zvazvo pasina chaiva nemigumisiro isingaperi, panguva iyi ndipo apo Larsen akawana chess. Akaenderera mberi achimiririra Denmark kaviri muWorld Junior Championship, muna 1951 kuBirmingham kuisa yechishanu uye muna 1953 kuCopenhagen kuisa yechisere. Akatanga kutamba zvakakomba pazera remakore gumi nemanomwe paakaenda kuCopenhagen kunodzidza mainjiniya ezvivakwa, asi haana kuzopedza kudzidza achisarudza kutamba chess zvine hunyanzvi. Akava Tenzi Wepasi Pose pazera ramakore 19 muna 1954, kubva mukuita kwake menduru yebronze ari mungarava imwe pa  <response>: Mitambo yeOlympic yeAmsterdam. Akakunda mukwikwidzi wake wekutanga weDanish Championship muna 1954, achidzokorora izvi muna 1955, 1956, 1959, 1963 na1964. 