Ranar 29 ga Agusta, 1944, sojojin Soviet sun isa iyakar Gabashin Prussia. A watan Janairun 1945, sun kama duk Gabashin Prussia sai dai yankin Königsberg. Yawancin mazauna sun gudu zuwa yamma a wannan lokacin. A kwanaki na ƙarshe na yaƙin, mutane fiye da miliyan biyu suka gudu daga gaban Red Army kuma aka kwashe su ta teku
Ka yi haƙuri. A karkashin Yarjejeniyar Potsdam, garin ya zama wani ɓangare na Tarayyar Soviet har sai an yanke shawarar ƙarshe game da tambayoyin ƙasa a zaman lafiya. Wannan ƙaddarar ta ƙarshe ta faru ne a ranar 12 ga Satumba 1990 tare da sanya hannu kan Yarjejeniyar kan Ƙarshen Ƙarshe game da Jamus. Karin bayani game da rabuwa da Gabashin Prussia ciki har da yankin da ke kewaye da Königsberg kamar haka (lura cewa an rubuta Königsberg "Koenigsberg" a cikin takaddar asali):