Ron Sun1, David Silver2, Gerald Tesauro3, Guang-Bin Huang4. 1. Cognitive Science Department, Rensselaer Polytechnic Institute, 110 Eighth Street, Carnegie 302A, Troy, NY 12180, USA. Electronic address: dr.ron.sun@gmail.com. 2. Google DeepMind, London, United Kingdom; University College London, United Kingdom. Electronic address: davidsilver@google.com. 3. Thomas J. Watson Research Center, Yorktown Heights, NY, USA. Electronic address: gtesauro@us.ibm.com. 4. School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore. Electronic address: egbhuang@ntu.edu.sg.