Grandmaster Ben Finegold profiles arguably the strongest non-World Champion ever, Viktor Korchnoi. A game from every decade the Soviet defector played strongly is featured.
Viktor Korchnoi vs Vladimir Zak, Leningrad (1951): D00 Queen's pawn, Chigorin variation
Vladimir Mikhailovich Liberzon vs Korchnoi, USSR Championship (1960): B43 Sicilian, Kan, 5.Nc3
Korchnoi vs Arturo Pomar-Salamanca, EU-chT Kapfenberg (1970): A00 Benko's opening
Korchnoi vs Karoly Honfi, Baden-Baden 32/127 (1981): A62 Benoni, fianchetto variation
Korchnoi vs Artur Yusupov, Cologne (1990): A18 English, Mikenas-Carls, Flohr variation
Korchnoi vs Pavel Kotsur, 34th Olympiad (2000): C02 French, advance, Wade variation