The Greatest Game You've Never Seen

This is an amazing game by IM Nadanian, featuring his patented 5.Na4!? against the Grünfeld. The diagram shows the position before all hell breaks lose. The final position looks like a composition: despite Black's huge material advantage and all those pieces clustered around his king, he has no defense against the primitive threat of 18.Qh8#. Astonishing. This game deserves to be in all the anthologies.