Hi guys this is my first review request against a 20k opponent.
I got a big advantage in the early game I think when I secured my corners and won a fight near the top. However he developed a large center and threatened my stones on the right which got me worried. Despite my poor attempts to invade the center and save my right hand stones he managed to come back and make the game close though I still won with ~20 points.
My questions are how will one go about invading the center? Is it okay to have kept playing in the center in order to reduce their space? Was it possible to save my right hand side stones?