Poikovsky
Smirin - Shirov
White continued 20.Rxb4!, and the rook cannot be taken: 20...Nxb4 21.Bd4 Qe6 22.Qg4 g6 23.Nh6#! or 22...Qg6 23.Ne7+. The Anatoly Karpov tournament ended in Poikovsky.
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