Games Between Two Players
Cho Sonjin (1 win; 5 loss) vs. Iyama Yuta
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2014-11-30] 62nd Japanese NHK Cup, round 3
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| Iyama Yuta 9p | Cho Sonjin 9p | B+R |  |
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| [2011-02-07] 66th Japanese Honinbo, league
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| Iyama Yuta 9p | Cho Sonjin 9p | B+R | |
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| [2008-11-27] 22nd Fujitsu Cup, Japanese preliminary
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| Cho Sonjin 9p | Iyama Yuta 8p | W+2.5 | |
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| [2007-04-29] 55th Japanese NHK Cup, round 1
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| Iyama Yuta 7p | Cho Sonjin 9p | B+3.5 | |
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| [2007-01-25] 33rd Japanese Tengen, round 1
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| Cho Sonjin 9p | Iyama Yuta 7p | W+R | |
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| [2006-08-03] 62nd Japanese Honinbo, preliminary
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| Iyama Yuta 7p | Cho Sonjin 9p | W+R | |
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