Games Between Two Players
Cho Chikun (12 win; 7 loss) vs. Sonoda Yuichi
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2022-02-03] 1st Japanese Teikei Cup Legend Tournament, round 3
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| Sonoda Yuichi 9p | Cho Chikun 9p | B+R |  |
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| [2017-02-09] 43rd Japanese Tengen, round 1
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| Cho Chikun 9p | Sonoda Yuichi 9p | B+0.5 | |
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| [2007-10-25] 33rd Japanese Meijin, preliminary
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| Cho Chikun 9p | Sonoda Yuichi 9p | B+4.5 | |
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| [2004-12-05] 52nd Japanese NHK Cup, round 3
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| Sonoda Yuichi 9p | Cho Chikun 9p | W+R | |
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| [2002-05-09] 27th Japanese Gosei, semi-final
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| Sonoda Yuichi 9p | Cho Chikun 9p | B+R | |
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| [1993-02-18] 19th Japanese Tengen, round 1
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| Cho Chikun 9p | Sonoda Yuichi 9p | B+4.5 | |
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| [1990-06-23] 3rd Japanese IBM Hayago Open, round 2
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| Sonoda Yuichi 9p | Cho Chikun 9p | W+R | |
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| [1988-12-26] 14th Japanese Tengen, title match #5
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| Sonoda Yuichi 9p | Cho Chikun 9p | W+R | |
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| [1988-12-21] 14th Japanese Tengen, title match #4
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| Cho Chikun 9p | Sonoda Yuichi 9p | W+0.5 | |
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| [1988-12-02] 14th Japanese Tengen, title match #3
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| Sonoda Yuichi 9p | Cho Chikun 9p | W+R | |
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| [1988-11-25] 14th Japanese Tengen, title match #2
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| Cho Chikun 9p | Sonoda Yuichi 9p | B+R | |
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| [1988-11-17] 14th Japanese Tengen, title match #1
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| Sonoda Yuichi 9p | Cho Chikun 9p | B+0.5 | |
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| [1987-09-17] 13th Japanese Tengen, semi-final
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| Cho Chikun 9p | Sonoda Yuichi 9p | B+R | |
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| [1986-06-12] 11th Japanese Gosei, challenger decision match
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| Sonoda Yuichi 9p | Cho Chikun 9p | W+5.5 | |
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| [1982-09-16] 8th Japanese Tengen, round 3
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| Cho Chikun 9p | Sonoda Yuichi 9p | B+R | |
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| [1979-06-21] 18th Japanese Judan, winner section round 1
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| Cho Chikun 8p | Sonoda Yuichi 9p | W+5.5 | |
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| [1978-11-09] 17th Japanese Judan, loser section round 3
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| Cho Chikun 8p | Sonoda Yuichi 9p | W+R | |
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| [1978-02-09] 4th Japanese Tengen, round 1
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| Cho Chikun 7p | Sonoda Yuichi 8p | B+0.5 | |
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| [1976-03-04] 1st Japanese Shinjin O, round 2
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| Cho Chikun 7p | Sonoda Yuichi 7p | W+20.5 | |
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