Grandmaster Varuzhan Akobian identifies positions where a player is down material, but can manage a draw with the fortress technique. See how the stronger side can't force the King out of the corner structure.
2017.11.28
Ivan Cheparinov vs Alexander Grischuk, FIDE World Rapid Championship (2013)
http://www.chessgames.com/perl/chessgame?gid=1719828
