▁Ne 4 ▁ 3 4 . Q x d 3 ▁ ▁The ▁kn ight ▁is ▁finally ▁taken ▁from ▁d 3 , ▁but ▁it ▁costs ▁Kar p ov ▁his ▁queen . ▁▁ 3 4 . ▁... ▁N f 2 + ▁ 3 5 . R xf 2 ▁B x d 3 ▁ 3 6 . R fd 2 ▁Q e 3 ▁ 3 7 . R x d 3 ▁ ▁Kar p ov ▁now ▁has ▁three ▁pieces ▁for ▁the ▁queen ▁( norm ally ▁a ▁reasonable ▁exchange ) ▁but ▁his ▁pieces ▁are ▁not ▁sufficiently ▁co - ordin ated ▁to ▁counter ▁Kas par ov ' s ▁attack . ▁▁ 3 7 . ▁... ▁R c 1 ▁ 3 8 . N b 2 ▁Q f 2 ▁ 3 9 . N d 2 ▁R x d 1 + ▁ 4 0 . N x d 1 ▁Re 1 + ▁White ▁res ign s ▁ 0 - 1 ▁( see ▁second ▁diagram ) ▁ ▁Games ▁ 1 7 ▁to ▁ 2 3 ▁- ▁Hon ours ▁even ▁Games ▁ 1 7 ▁and ▁ 1 8 ▁were ▁short ▁draw s . ▁In ▁game ▁ 1 9 ▁Kar p ov , ▁with ▁the ▁black ▁pieces , ▁adopted ▁an ▁unusual ▁opening ▁strategy ▁which ▁eventually ▁back f ired ▁on ▁him . ▁Kas par ov ▁won ▁the ▁game ▁in ▁ 4 2 ▁moves , ▁to ▁extend ▁his ▁lead ▁to ▁ 2 ▁points . ▁ ▁With ▁Kas par ov ▁now ▁need ing ▁only ▁four ▁draw s ▁from ▁five ▁games ▁to ▁become ▁World ▁Champion ,