Dennis takes a look at the Botvinnik Semi-Slav's use in van Wely - Smeets, 2005 and how it improves on a 1996 struggle between Azmaiparashvili and Shirov. The game is a very deep theoretical struggle and Dennis uses it to not only explore a fascinating opening line but also to talk about the very notion of deep theory. Take a seat and let Dennis be your guide to the farthest reaches of the known chess universe!