Sumo robots on display at the International Robot Sumo Tournament 2015, in the Ryogoku Sumo Hall (Ryogoku Kokugikan) on December 13, 2015. The annual competition brings the winners from 14 robot sumo
Tokyo, Japan. 16th Dec, 2018. Sumo robots fight during the ''All Japan Robot Sumo Tournament 2018'' at the Ryogoku Kokugikan sumo hall. The annual tournament invites the top-ranked winners from Japan and