 Nyora kupfuurira kweiyi ndima - Mukumuka kweOperation IskraMushure mokuparadzwa kweLeningrad neGermany muna January 1943, Marshal G. K. Zhukov akafunga zano rokukomberedza nokuparadza Army Group North: Operation Polyarnaya Zvezda. Urongwa uhwu hwaizoda masimba ekuwedzera, saka zvichitevera Operation Mars 380th, pakati pemamwe mapoka, yakaendeswa kuNorthwestern Front muna Zvita, 1942, kutanga kuFront reserve uye ichienda ku1st Shock Army naFebruary 1. Nhanho yokutanga yebasa rose yaizova imwe nhamburiko yokugura ndokubvisa boka reGermany muDemyansk salient. Zhukov akapedzisa zano rake mukati mevhiki rakatangira zuva rakarongwa rokurwisa raFebruary 15. Munguva yemusangano musi waFebruary 10, akarayira mutungamiri we1st Shock kuti aendese mauto erutivi rwake rwerudyi, kusanganisira 380th, uye zvikamu zvavo zvemauto kune 53rd Army iri pedyo, kuitira kuti mutungamiri wehondo avashandise kuumba boka rake rekurova kuti vabatsire kucheka iyo inonzi Ramushevo corridor. Zvisinei, muchiedza chekukomberedzwa uye kukundwa kwe6th Army paStalingrad, musi waJanuary 31 Hitler akanga abvumidza kubviswa kweII Army Corps kubva kuDemyansk. Operation Ziethen yakatanga musi waFebruary 17 kusati kwatanga kurwisa kweSoviet kwakanga kwambomiswa, uye yakaita kuti hurongwa hwaZhukov hwose hupere. Mauto eSoviet eski e34th ne53rd Mauto akashandiswa kutambudza zvikamu zveGermany zvaidzokera shure asi havana kukwanisa kukuvadza zvakakomba. Demyansk yakasiyiwa musi waFebruary 21 uye mazuva mashanu gare gare chikamu chikuru chenzira yacho chakasiyiwawo. 