Korchnoi vs Geller, 1954  (B64) Sicilian, Richter-Rauzer Attack, 25 moves, 1-0 Korchnoi vs A Zaitsev, 1962  (D60) Queen's Gambit Declined, Orthodox Defense, 29 moves, 1-0 Korchnoi vs M Udovcic, 1967  (C05) French, Tarrasch, 31 moves, 1-0 Korchnoi vs Bacrot, 1997 (A20) English, 46 moves, 1-0 W Hug vs Korchnoi, 1978  (A04) Reti Opening, 24 moves, 0-1 L M Kovacs vs Korchnoi, 1969  (C01) French, Exchange, 25 moves, 0-1 6 games