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The Daiwa Cup full name Daiwa Securities Cup Net Igo Open is a Go competition.
The Daiwa Cup is sponsored by Daiwa Securities Group. The format of the tournament is a round robin with 4 leagues and 4 players in each league. Games are played on Saturday and Sunday nights on the Nihon Ki-in go server. The time allowance is five minutes per player, followed by a byo-yomi of 30 seconds a move. The winners purse is 1,500,000 Yen ($12,700).
Winners & runners-up 
|Winner||Runner up||Year Held|
|Takao Shinji||Cho U||2006|
|O Meien||Yoda Norimoto||2007 (2nd)|
|Takao Shinji||Iyama Yuta||2007 (3rd)|
|Kono Rin||Kobayashi Koichi||2008|
|Kono Rin||Iyama Yuta||2009|
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