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| Iyama Yuta Jyudan 3 - 1 Cho U Challenger | |||
| Date(2012) | Venue | Result | |
| 1 | March.1 | Osaka | Iyama(W) won by resign |
| 2 | March. 19 | Tokyo | Iyama(B) won by resign |
| 3 | April. 5 | Nagano | Cho(B) won by resign |
| 4 | April. 18 |
Osaka | Iyama(B) won by resign |
| 5 | April. 25 | Tokyo | |
| The 50th Judan Tournament | |||||
| Player | Round 1 | Round 2 | Round 3 | Semi Finale | Finale |
| Mochizuki Kenichi | Yukawa 9/15 |
Ogata 11/24 |
Ko 12/22 |
Cho U 1/23 |
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| Yukawa Mitsuhisa | Yukawa 7/7 |
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| M.Redmond | |||||
| Ogata Masaki | Ogata 9/15 |
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| Kato Atsushi | |||||
| Ko Iso | Ko 8/25 |
Ko 11/24 |
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| Yoda Norimoto | Yoda 7/14 |
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| Cho Sonjin | |||||
| Komatsu Hideki | Takao 7/21 |
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| Takao Shinji | |||||
| Cho Chikun | Akiyama 10/13 |
Kono 11/17 |
Cho U 12/22 |
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| Hane Naoki | Akiyama 9/1 |
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| Akiyama Jiro | |||||
| Kono Rin | Kono 9/8 |
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| Kurahashi Masayuki | |||||
| Anzai Nobuaki | Anzai 10/6 |
Cho U 10/27 |
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| Yamashita Keigo | Murakawa 9/8 |
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| Murakawa Daisuke | |||||
| Awaji Shuzo | Cho U 6/30 |
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| Cho U | |||||