Games Between Two Players
Iyama Yuta (12 win; 1 loss) vs. Ko Iso
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2019-11-11] 58th Japanese Judan, round 3
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| Iyama Yuta 9p | Ko Iso 9p | B+R |  |
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| [2017-01-26] 42nd Japanese Meijin, league
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| Ko Iso 8p | Iyama Yuta 9p | W+R | |
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| [2015-06-22] 41st Japanese Tengen, round 3
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| Iyama Yuta 9p | Ko Iso 8p | B+R | |
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| [2012-07-02] 21st Japanese Ryusei, round 1
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| Ko Iso 8p | Iyama Yuta 9p | W+2.5 | |
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| [2011-12-08] 67th Japanese Honinbo, league
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| Iyama Yuta 9p | Ko Iso 8p | B+R | |
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| [2010-08-12] 49th Japanese Judan, winner section round 3
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| Ko Iso 7p | Iyama Yuta 9p | W+R | |
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| [2008-05-29] 56th Japanese Oza, round 1
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| Ko Iso 7p | Iyama Yuta 7p | W+R | |
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| [2008-05-01] 33rd Japanese Meijin, league
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| Iyama Yuta 7p | Ko Iso 7p | B+R | |
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| [2007-07-25] 4th Japanese Nakano Cup (U20), final
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| Ko Iso 7p | Iyama Yuta 7p | W+R | |
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| [2007-02-22] 55th Japanese Oza, preliminary
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| Iyama Yuta 7p | Ko Iso 7p | B+2.5 | |
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| [2006-08-24] 32nd Japanese Meijin, preliminary
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| Ko Iso 7p | Iyama Yuta 7p | B+2.5 | |
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| [2005-07-21] 30th Japanese Shinjin O, semi-final
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| Ko Iso 4p | Iyama Yuta 4p | W+3.5 | |
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| [2005-07-19] 2nd Japanese Nakano Cup (U20), final
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| Ko Iso 4p | Iyama Yuta 4p | W+R | |
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