Games Between Two Players
Ko Iso (3 win; 0 loss) vs. Tsuruyama Atsushi
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2021-04-02] 76th Japanese Honinbo, league
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| Ko Iso 9p | Tsuruyama Atsushi 8p | B+R |  |
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| [2019-08-01] 58th Japanese Judan, preliminary
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| Tsuruyama Atsushi 7p | Ko Iso 8p | W+0.5 | |
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| [2016-08-18] 72nd Japanese Honinbo, preliminary
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| Tsuruyama Atsushi 7p | Ko Iso 8p | W+R | |
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