Borislav Ivkov vs Jan Hein Donner - Havana 1965.09.13

Borislav Ivkov vs Jan Hein Donner<br>Havana Havana CUB round 13 1965.09.13<br>Ruy Lopez: Open, Howell Attack 1-0<br>https://www.chessgames.com/perl/chessgame?gid=1061789 --- Send in a voice message: https://anchor.fm/blindfoldchess/message