Demachi Koichiro (出町浩一郎)
Place: Tokyo, Japan
Rating: 1887.34, Std: 164.17, Rank: 713
First game: 2014-04-13, Last game: 2019-01-20
Top rating: 1917.82 (2014-04-13)
Games: 74, Wins: 20, Draws: 1, Losses: 53
Gy1: 0, Gy2: 0, Gy5: 18
| 22 New Year (Mikami) Cup | ||||
|---|---|---|---|---|
| Date | 2019-01-20 | Rating | 1887.34 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Takazawa Nagayoshi | 2112.71 |
| 2 | White | Loss | Kato Daisuke | 1863.35 |
| 3 | White | Win | Fujita Maiko | 2229.29 |
| 4 | Black | Loss | Fujikawa Masaki | 2082.77 |
| 5 | Black | Loss | Inoue Fumiya | 2365.15 |
| 19 Renju Emperor Tournament Kanto area 1st round | ||||
| Date | 2018-10-21 | Rating | 1888.54 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2525.09 |
| 2 | Black | Loss | Inoue Fumiya | 2360.10 |
| 3 | Black | Win | Tsushima Takato | 1617.53 |
| 4 | Black | Win | Ito Midori | 1664.67 |
| 10th Tohoku Championship | ||||
| Date | 2018-09-09 | Rating | 1888.15 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Miyamoto Syunju | 2212.75 |
| 3 | White | Loss | Okabe Hiroshi | 2650.99 |
| 4 | White | Loss | Kusajima Masato | 2239.23 |
| 5 | White | Loss | Hirono Masakazu | 2028.15 |
| 35 Kanto Shineisen Tournament | ||||
| Date | 2018-04-01 | Rating | 1893.48 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Yambe Manami | 1746.70 |
| 2 | White | Win | Fujikawa Masaki | 2055.22 |
| 3 | White | Loss | Iwano Fumio | 2213.82 |
| 4 | Black | Loss | Takagi Tomoyuki | 2109.54 |
| 5 | White | Loss | Fujita Maiko | 2184.88 |
| 57 Suiseisen Tournament 1st round | ||||
| Date | 2017-10-01 | Rating | 1892.76 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Koyama Akihiro | 1931.49 |
| 2 | Black | Loss | Takagi Tomoyuki | 2111.89 |
| 3 | Black | Loss | Nishizawa Aoi | 2114.16 |
| 3 | White | Win | Morita Yutaka | 1688.86 |
| 34 Kanto Shineisen Tournament | ||||
| Date | 2017-04-09 | Rating | 1900.49 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Fujikawa Masaki | 2047.68 |
| 2 | White | Loss | Takagi Tomoyuki | 2114.67 |
| 3 | Black | Win | Koyama Akihiro | 1917.69 |
| 3 | Black | Win | Tomosue Takahito | 1524.99 |
| 5 | Black | Loss | Nakamura Souta | 2223.19 |
| 20 New Year (Mikami) Cup | ||||
| Date | 2017-01-22 | Rating | 1904.07 | |
| Round | Color | Result | Opponent | |
| A1 | White | Win | Tomobe Katsuhiro | 2109.89 |
| A2 | White | Win | Maruta Hiroki | 2079.05 |
| A3 | White | Loss | Iwano Fumio | 2227.61 |
| A4 | Black | Win | Tomobe Katsuhiro | 2109.89 |
| A5 | White | Loss | Maruta Hiroki | 2079.05 |
| A6 | Black | Loss | Iwano Fumio | 2227.61 |
| 17 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2016-11-23 | Rating | 1899.17 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2564.01 |
| 2 | White | Loss | Maruta Koji | 2122.68 |
| 3 | White | Loss | Maruta Hiroki | 2083.64 |
| 4 | Black | Loss | Iwano Fumio | 2225.09 |
| 56 Suiseisen Tournament final round | ||||
| Date | 2016-10-09 | Rating | 1897.59 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Maruta Hiroki | 2088.66 |
| 2 | Black | Loss | Iwano Fumio | 2221.49 |
| 3 | White | Loss | Fujikawa Masaki | 2060.46 |
| 56 Suiseisen Tournament 1st round | ||||
| Date | 2016-09-11 | Rating | 1897.99 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2090.96 |
| 2 | Black | Win | Yunoki Takahiro | 1764.62 |
| 3 | Black | Loss | Iwano Fumio | 2217.73 |
| 33 Kanto Shineisen Tournament | ||||
| Date | 2016-04-10 | Rating | 1900.96 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2083.19 |
| 2 | White | Loss | Nakamura Souta | 2243.63 |
| 3 | White | Win | Nishizawa Aoi | 2071.75 |
| 4 | Black | Loss | Tanizaki Ryusuke | 2139.83 |
| 5 | White | Loss | Tomobe Katsuhiro | 2101.28 |
| 19 Mikami Cup | ||||
| Date | 2016-03-13 | Rating | 1901.70 | |
| Round | Color | Result | Opponent | |
| A1 | Black | Loss | Tomobe Katsuhiro | 2098.00 |
| A2 | Black | Win | Maruta Hiroki | 2083.93 |
| A3 | White | Loss | Iwano Fumio | 2206.50 |
| A4 | White | Loss | Tomobe Katsuhiro | 2098.00 |
| A5 | White | Loss | Maruta Hiroki | 2083.93 |
| A6 | Black | Win | Iwano Fumio | 2206.50 |
| 55 Suiseisen Tournament 2nd round | ||||
| Date | 2015-10-18 | Rating | 1897.97 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Fujikawa Masaki | 2075.94 |
| 2 | White | Loss | Maruta Hiroki | 2083.82 |
| 3 | White | Draw | Tanizaki Ryusuke | 2140.76 |
| 55 Suiseisen Tournament 1st round | ||||
| Date | 2015-09-13 | Rating | 1897.65 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Tanizaki Ryusuke | 2144.78 |
| 2 | Black | Win | Tomobe Katsuhiro | 2080.08 |
| 3 | White | Loss | Maruta Hiroki | 2080.22 |
| 32 Kanto Shineisen Tournament | ||||
| Date | 2015-04-12 | Rating | 1892.94 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Tomobe Katsuhiro | 2078.04 |
| 2 | Black | Loss | Maruta Hiroki | 2055.21 |
| 3 | Black | Loss | Ozawa Tetsushi | 2018.24 |
| 4 | Black | Loss | Hashimoto Takuya | 1990.35 |
| 5 | Black | Loss | Iwano Fumio | 2207.56 |
| 31th Kanto Championship | ||||
| Date | 2014-05-11 | Rating | 1916.83 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kobayashi Koichi | 2207.72 |
| 2 | Black | Loss | Kamiya Shunsuke | 2561.60 |
| 4 | White | Win | Nakamura Souta | 2134.04 |
| 5 | White | Loss | Tada Ayako | 2273.74 |
| 31st Kanto Shineisen Tournament | ||||
| Date | 2014-04-13 | Rating | 1917.82 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Fujikawa Masaki | 2016.97 |
| 2 | Black | Loss | Tomobe Katsuhiro | 2091.28 |
| 3 | Black | Win | Sugawara Shinji | 1576.96 |
| 4 | White | Loss | Nakamura Souta | 2128.22 |
| 5 | White | Win | Kurokawa Toshihiro | 1739.29 |