Games Between Two Players
Ko Iso (2 win; 3 loss) vs. Ida Atsushi
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2017-11-30] 43rd Japanese Gosei, round 1
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| Ida Atsushi 8p | Ko Iso 8p | B+R |  |
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| [2017-11-02] 73rd Japanese Honinbo, league
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| Ko Iso 8p | Ida Atsushi 8p | W+7.5 | |
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| [2017-08-24] 42nd Japanese Kisei, league B1
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| Ida Atsushi 8p | Ko Iso 8p | W+0.5 | |
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| [2016-06-30] 72nd Japanese Honinbo, preliminary
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| Ko Iso 8p | Ida Atsushi 8p | B+R | |
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| [2015-02-01] 62nd Japanese NHK Cup, round 4
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| Ida Atsushi 8p | Ko Iso 8p | B+9.5 | |
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