Jan Timman vs Jan Hein Donner - NED-ch 1969.04.03

Jan Timman vs Jan Hein Donner<br>NED-ch Leeuwarden NED round 4 1969.04.03<br>Queen's Indian Defense: Averbakh Variation 0-1<br>https://www.chessgames.com/perl/chessgame?gid=1141797 --- Send in a voice message: https://anchor.fm/blindfoldchess/message