Maximising an advantage

Bobby Cheng (photo on home page) is a Chinese-Australian chess player. He was awarded the title of Grandmaster by FIDE in 2019. Cheng was world champion in the under 12 category in 2009, the only Australian in history to win a world title. Cheng won Australian Open championship in 2013 and Australian chess Championship in 2016

Diagram - playing Black he seeks to maximise his positional advantage. How ?

In the 23rd Sants Open played recently in Barcelona he came equal 2nd in a field of 104 players

👍 Tournaments: 23rd Sants Open - Barcelona, Spain