On May 23rd, when AlphaGo had problems in the opening stage, although Ke Jie revitalized the situation and stabilized his position through clever layout, in the formal stage, Ke Jie could do nothing, and finally lost to AlphaGo with a slight disadvantage.

On May 25th, the second man-machine war of China Go Summit was held in Tongxiang, Zhejiang. Ke Jie lost 155, and the total score was 0-2 to AlphaGo.

On May 27th, the last match between Ke Jie and Alpha Dog continued. After playing for more than three hours, Ke Jie rolled the dice and gave up.