Jan Timman vs Jan Hein Donner
NED-ch Leeuwarden NED round 4 1969.04.03
Queen’s Indian Defense: Averbakh Variation 0-1

Mikhail Botvinnik vs Jan Hein Donner
Wageningen Caltex Wageningen NED round 5 1958.11.09
King’s Indian Defense: Fianchetto Variation, Panno Variation 1-0