Rubuta ci gaba ga wannan sakin layi - Wannan matsayin daga Wasan 17 na Gasar Duniya ta 1978 tsakanin Viktor Korchnoi, mai kalubalanci, da Gwarzon Duniya, Anatoly Karpov. Karpov, yana wasa da Black, yana barazanar abokin aiki na baya tare da 39... Rc1 #. Korchnoi zai iya hana wannan ta hanyar motsa g-pawn (amma ba h-pawn ba saboda 39.h3 ko h4 yana kaiwa zuwa 39...Rc1+ 40.Kh2 Nf1+ 41.Kg1 Nfg3+ 42.Kh2 Rh1 #), yana ba da filin tserewa ga sarkinsa. A cikin matsala mai tsanani, Korchnoi ya taka leda kuma ya yi murabus bayan 39... Nf3 + tare da matsewar da aka tilasta bayan 40. gxf3 Rg6 + 41. Kh1 Nf2# ko 40.Kh1 Nf2#. Karpov ya ci gaba da lashe wasan kuma daga baya ya sake doke Korchnoi a 1981 a cikin " Kashe-kashe a Merano
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