Chinese Go player Ke Jie puts a stone against Google's artificial intelligence program AlphaGo during their first match at the Future of Go Summit in Wuzhen, Zhejiang province, China May 23, 2017. REUTERS/Stringer ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY. CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA. TPX IMAGES OF THE DAY - RTX37431