Berthold Koch vs Karl Helling - It BSG 1928.02.11

Berthold Koch vs Karl Helling<br>It BSG Berlin GER round 7 1928.02.11<br>Queen's Gambit Accepted: Classical Defense, Main Line 0-1<br>https://www.chessgames.com/perl/chessgame?gid=1280363 --- Send in a voice message: https://anchor.fm/blindfoldchess/message