European Pair Go Championship: How to lose a good game by skipping one kikashi

It's the final game for the 1st place
Black played well in fuseki and he was ahead. But ... later he forgot to play sente kikashi on Black 51 and White lived easily in the center.
You can check the right order, suggested by me.
Congratulations to Russian pair! Natalia Kovaleva (Nata on KGS) and Dmitrij Surin were stronger again than other pairs!

Tournament table: http://www.promogo.cz/index.php?option=com_content&task=view&id=48&Itemid=74