osh chen ko ▁and ▁Ev gen y ▁Vlad im iro v ▁also ▁helping . ▁ ▁The ▁match ▁ ▁The ▁ 1 9 8 5 ▁champion ships ▁represented ▁a ▁restart ▁of ▁the ▁abandoned ▁match . ▁ ▁Due ▁to ▁the ▁extreme ▁duration ▁of ▁the ▁previous ▁match , ▁F IDE ▁agreed ▁at ▁a ▁meeting ▁in ▁Tun is ia ▁in ▁July ▁ 1 9 8 5 ▁that ▁the ▁re - arr anged ▁championship ▁would ▁be ▁of ▁fixed ▁length , ▁played ▁as ▁the ▁best ▁of ▁ 2 4 ▁games . ▁ ▁If ▁the ▁match ▁had ▁ended ▁at ▁a ▁ 1 2 - 1 2 ▁draw , ▁Kar p ov ▁would ▁have ▁retained ▁his ▁title . ▁ ▁As ▁Kar p ov ▁had ▁been ▁leading ▁the ▁ 1 9 8 4 ▁champion ships , ▁he ▁was ▁also ▁granted ▁an ▁automatic ▁rem atch ▁if ▁he ▁lost . ▁ ▁The ▁playing ▁reg ulations ▁were ▁that ▁ 4 0 ▁moves ▁should ▁be ▁made ▁by ▁each ▁player ▁in ▁ 2 ▁hours ▁ 3 0 ▁minutes , ▁with ▁games ▁being ▁adj ourn ed ▁to ▁the ▁following ▁day ▁after ▁ 4 0 ▁moves ▁were ▁completed . ▁ ▁Kas par ov ' s ▁preferred ▁ven ue ▁was ▁L ening rad ▁and ▁b ids ▁for ▁the ▁match ▁had ▁been ▁received ▁from ▁London ▁and ▁Marse ille . ▁ ▁In ▁the ▁end , ▁with ▁the ▁backing ▁of ▁the ▁Soviet ▁Ch ess ▁Federation , ▁F IDE ▁selected ▁Moscow ' s ▁T cha ik ov sky ▁Con cert ▁Hall ▁as ▁the ▁ven ue ▁for ▁the ▁match . ▁▁▁ ▁The ▁opening ▁ceremony ▁was