(Underestimation of the opponent's counterplay. Middlegame). The book is intended for intermediate and stronger players and brings 111 deeply annotated examples from practical grandmaster games played in 2019. It focuses on the middlegame - material is sorted by themes as shown in picture 2. Index of players at the end. GM Alexander Galkin, among other things, was the under-20 World champion, his peak rating was over 2600. He works as a coach for a long time. In 2016, Galkin was named Children’s Trainer of the Year by the Russian Chess Federation. Anastasia Travkina is WIM from Russsia.