Kaori Aoba (青葉 かおり, Aoba Kaori; born July 11, 1978) is a female professional 5 dan Go player. She is currently an affiliate of the Nihon Ki-in, the largest Go association of Japan, and was a student of Yasumasa Hane. On 4 September 2008, Aoba was defeated by Crazy Stone, a Monte-Carlo Tree Search Go playing engine, in an 8-stone handicap game in Tokyo, Japan. The exhibition match marks the earliest official defeat of a professional by a computer with a conventional handicap.
Source: “Kaori Aoba”, English Wikipedia (CC BY-SA 4.0), excerpt