<prompt> Qedela lo musho olandelayo: Ezinyangeni ezimbalwa nje ngemva kokungena kuka-Ivan Shishman esihlalweni sobukhosi, ngo-September 26, 1371, amaTurkey ase-Ottoman anqoba ibutho elikhulu lamaKristu elaliholwa abazalwane baseSerbia uVukašin Mrnjavčević noJovan Uglješa  <response>: Impi YaseChernomen. Nakuba u-Ugleša ayezame ukwakha umfelandawonye obanzi owawuzohlanganisa neBulgaria, u-Ivan Shishman, okwakudingeka aqinise igunya lakhe, akazange ahlanganyele. Ngemva kokunqoba kwabo eChernomen, abaseTurkey ngokushesha bahlasela iBulgaria. Umbusi wase-Ottoman uMurad I waphoqa u-Ivan Shishman ukuba abuyele enyakatho yezintaba zaseBalkan futhi wanqoba enyakatho yeThrace, iRhodopes, Kostenets, Ihtiman neSamokov. Engakwazi ukumelana nokuhlaselwa, u-Ivan Shishman kwadingeka ukuba axoxisane nama - Ottoman ngo - 1373. Waphoqeleka ukuba abe yi-vassal yama-Ottoman futhi avumele udadewabo uKera Tamara, owayedume ngobuhle bakhe, ukuba abe ngumfazi kaMurad I. Ngaphansi kwalesi sivumelwano, iBulgaria yathola kabusha ezinye zezindawo ezinqotshiwe ezinjenge-Ihtiman neSamokov, futhi yaqala cishe iminyaka eyishumi yokuthula okungajabulisi namaTurkey. Naphezu kokubuswa kanye nesivumelwano sokuthula, ukuhlaselwa kwama-Ottoman kwavuselelwa ekuqaleni kwawo-1380 futhi kwafinyelela umvuthwandaba ngo-1385 ngokuwa kweSofia, inqaba yokugcina ka-Ivan Shishman eningizimu yezintaba zaseBalkan. 