Games Between Two Players
O Rissei (3 win; 0 loss) vs. Ko Iso
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2009-11-22] 57th Japanese NHK Cup, round 2
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| Ko Iso 7p | O Rissei 9p | W+R |  |
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| [2009-08-13] 48th Japanese Judan, winner section round 2
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| O Rissei 9p | Ko Iso 7p | B+R | |
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| [2006-03-09] 32nd Japanese Tengen, round 2
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| O Rissei 9p | Ko Iso 7p | B+R | |
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