Kick Langeweg vs Gennady Borisovich Sosonko Amsterdam OHRA Amsterdam NED round 1 1984.07.17 Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation 1/2-1/2

Viktor Korchnoi vs John Nunn
Amsterdam OHRA Amsterdam NED round 10 1988.08.11
English Opening: Anglo-Indian Defense 1/2-1/2