18th Agon Cup

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The 18th Agon Cup began on 21 April 2011-1 October 2011. Two Korean amateur players were invited to the preliminaries, with both qualifying. Ha Sungbong defeated professionals Yanigasawa Satoshi and Furuya Yutaka. Kim Sungjin defeated 25th Honinbo and Japan's top title holder Cho Chikun. He also defeated Kato Atsushi. In the main tournament, he was knocked out by Iyama Yuta Meijin in the first round.[1] Iyama Yuta came out as the winner. He beat Yamashita Keigo at the final.[2] The winner's prize was ¥10,000,000.[3]


Round of 16Quarter-finalsSemi-finalsFinal
23 June
Mizokami Tomochika
25 July
Ha Sungbong (A)B+R
Ha Sungbong
4 July
Yamashita KeigoW+R
Takao Shinji
25 August
Yamashita KeigoW+R
Yamashita KeigoB+R
23 June
Kim Shushun
Cho UB+1.5
14 July
Shida Tatsuya
Cho U
16 June
Kim ShushunB+R
Kim ShushunB+R
1 October
Nakano Hironari
Yamashita Keigo
23 June
Iyama YutaB+R
Ryu Shikun
21 July
Yamada KimioW+R
Yamada KimioW+R
30 June
O Meien
O MeienB+0.5
4 August
Sakai Hideyuki
Yamada Kimio
2 June
Iyama YutaB+R
Iyama YutaB+R
18 July
Kim Sungjin (A)
Iyama YutaB+0.5
9 June
Yuki Satoshi
Cho Sonjin
Yuki SatoshiW+1.5


  1. ^ "18th Agon Cup(All-Japan HayaGo Open Tournament)". igokisen.web.fc2.com. Retrieved 8 June 2011. 
  2. ^ -, Jing. "Iyama Yuta wins Agon Cup, Kong Jie becomes Mingren challenger". Go Game Guru. Go Game Guru. Retrieved 3 May 2017. 
  3. ^ -, The Nihon Ki-in. "第18期 阿含・桐山杯 全日本早碁オープン戦". The Nihon Ki-in. The Nihon Ki-in. Retrieved 3 May 2017.