Sarki Matthias ya yi yaƙe-yaƙe da sojojin haya na Czech waɗanda suka mamaye Upper Hungary (yau sassan Slovakia da Arewacin Hungary) da kuma Frederick III, Sarkin Roma Mai Tsarki, wanda ya yi iƙirarin Hungary don kansa.A cikin wannan lokaci, daular Ottoman ta ci Sabiya da Bosnia, inda ta kawo karshen yankin jihohin da ke da iyaka da kudancin kasar Hungary.Matthias ya sanya hannu kan yarjejeniyar zaman lafiya tare da Frederick III a shekara ta 1463, tare da amincewa da ikon Sarkin sarakuna don ya zama Sarkin Hungary.Matthias ya gabatar da sabbin haraji kuma yana saita haraji akai-akai a matakan ban mamaki.Waɗannan matakan sun haifar da tawaye a Transylvania a shekara ta 1467, amma ya fatattaki 'yan tawayen.A shekara ta gaba, Matthias ya shelanta yaƙi a kan George na Poděbrady, Sarkin Hussite na Bohemia, kuma ya ci Moravia, Silesia, da Lausitz, amma ya kasa mamaye Bohemia daidai.Estates Katolika sun ayyana shi Sarkin Bohemia a ranar 3 ga Mayu 1469, amma sarakunan Hussite sun ƙi ba shi biyayya ko da bayan mutuwar shugabansu George na Poděbrady a 1471.Matthias ya kafa ɗaya daga cikin ƙwararrun rundunonin soja na farko na Turai ta Tsakiya (Rundunar Baƙar fata na Hungary), ya gyara tsarin shari'a, rage ikon baron, da haɓaka ayyukan ƙwararrun mutane waɗanda aka zaɓa don iyawarsu maimakon matsayin zamantakewa.Matthias ya jagoranci fasaha da kimiyya;Laburarensa na sarauta, Bibliotheca Corviniana, yana ɗaya daga cikin manyan tarin littattafai a Turai.Tare da taimakonsa, Hungary ta zama ƙasa ta farko da ta rungumi Renaissance daga Italiya.Kamar yadda Matthias adali, sarkin da ya yi yawo a cikin talakawansa a ɓoye, ya kasance sanannen gwarzo na tatsuniyoyi na Hungary da Slovak.