Akaboshi Intetsu (7-dan)Honinbo Jowa (Meijin Godokoro)A tragic climax of the iemoto system. Played between the "Invincible" Meijin Jowa and the Inoue prodigy Akaboshi Intetsu, this match was a proxy war for house supremacy.
Honinbo ShusakuGennan InsekiThe legendary 耳赤の一局 (Mimiaka no Ikkyoku). Seventeen-year-old Shusaku, playing Black against the 8-dan head of the Inoue house, overcame a taisha joseki mistake with move 127, the move that made Gennan's ears flush red.
Iwamoto Kaoru (7p)Hashimoto Utaro (7p)Game 2 of the 1945 Honinbo title match, played in suburban Hiroshima. On the third day, the uranium bomb detonated at move 106 as the adjourned position was being replayed. The players reassembled the board and finished the game that same afternoon.
Lee Chang-ho (9p)
Ma Xiaochun (9p)Final of the 9th Fujitsu Cup at Kudan Kaikan, Tokyo. Defending champion Ma Xiaochun faced Lee Chang-ho, the 21-year-old "Stone Buddha," in a single-game title match Lee won in 165 moves.
AlphaGoLee Sedol (9p)Game 4 of the DeepMind Challenge Match. Down 0-3, Lee Sedol played the wedge at move 78 that Gu Li called a "divine move," shocking AlphaGo into a collapse and securing humanity's only win in the series.
Ke Jie (9p)AlphaGoOpening game of the Future of Go Summit in Wuzhen. Ke Jie, world number one, tested AlphaGo Master with an early 3-3 invasion; AlphaGo answered with a flawless game and won by the smallest possible margin after 289 moves.