Games Between Two Players
O Rissei (1 win; 3 loss) vs. Sakai Hideyuki
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2016-02-18] 25th Japanese Ryusei, group E
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| Sakai Hideyuki 8p | O Rissei 9p | B+R |  |
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| [2014-04-24] 62nd Japanese Oza, preliminary
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| O Rissei 9p | Sakai Hideyuki 8p | B+R | |
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| [2010-08-09] 49th Japanese Judan, loser section round 1
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| Sakai Hideyuki 7p | O Rissei 9p | B+0.5 | |
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| [2005-12-15] 19th Fujitsu Cup, Japanese preliminary
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| Sakai Hideyuki 7p | O Rissei 9p | B+0.5 | |
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