The agent is described and analyzed in the EUMAS-2021 paper "Aiming for Half Gets You to the Top: Winning PowerTAC 2020", which can be downloaded from here:
http://www.intelligence.tuc.gr/~gehalk/Papers/TUC-TAC_EUMAS2021.pdf
Please cite the paper as follows: Orfanoudakis S., Kontos S., Akasiadis C., Chalkiadakis G.: Aiming for Half Gets You to the Top: Winning PowerTAC 2020. In Proc. of the 18th European Conference on Multi-Agent Systems (EUMAS-2021), Virtual-Online, June 2021.