Demachi Koichiro (出町浩一郎)
Place: Tokyo, Japan
Rating: 1891.37, Std: 171.64, Rank: 774
First game: 2014-04-13, Last game: 2019-01-20
Top rating: 1919.87 (2014-04-13)
Games: 74, Wins: 20, Draws: 1, Losses: 53
Gy1: 0, Gy2: 0, Gy5: 9
| 22 New Year (Mikami) Cup | ||||
|---|---|---|---|---|
| Date | 2019-01-20 | Rating | 1891.37 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Takazawa Nagayoshi | 2136.88 |
| 2 | White | Loss | Kato Daisuke | 1867.72 |
| 3 | White | Win | Fujita Maiko | 2232.10 |
| 4 | Black | Loss | Fujikawa Masaki | 2083.22 |
| 5 | Black | Loss | Inoue Fumiya | 2367.86 |
| 19 Renju Emperor Tournament Kanto area 1st round | ||||
| Date | 2018-10-21 | Rating | 1892.47 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2529.88 |
| 2 | Black | Loss | Inoue Fumiya | 2362.74 |
| 3 | Black | Win | Tsushima Takato | 1627.27 |
| 4 | Black | Win | Ito Midori | 1691.43 |
| 10th Tohoku Championship | ||||
| Date | 2018-09-09 | Rating | 1891.94 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Miyamoto Syunju | 2218.78 |
| 3 | White | Loss | Okabe Hiroshi | 2656.64 |
| 4 | White | Loss | Kusajima Masato | 2245.12 |
| 5 | White | Loss | Hirono Masakazu | 2033.79 |
| 35 Kanto Shineisen Tournament | ||||
| Date | 2018-04-01 | Rating | 1896.72 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Yambe Manami | 1747.70 |
| 2 | White | Win | Fujikawa Masaki | 2056.21 |
| 3 | White | Loss | Iwano Fumio | 2214.10 |
| 4 | Black | Loss | Takagi Tomoyuki | 2108.89 |
| 5 | White | Loss | Fujita Maiko | 2187.32 |
| 57 Suiseisen Tournament 1st round | ||||
| Date | 2017-10-01 | Rating | 1895.52 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Koyama Akihiro | 1932.44 |
| 2 | Black | Loss | Takagi Tomoyuki | 2111.56 |
| 3 | Black | Loss | Nishizawa Aoi | 2113.52 |
| 3 | White | Win | Morita Yutaka | 1689.70 |
| 34 Kanto Shineisen Tournament | ||||
| Date | 2017-04-09 | Rating | 1902.93 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Fujikawa Masaki | 2049.14 |
| 2 | White | Loss | Takagi Tomoyuki | 2114.53 |
| 3 | Black | Win | Koyama Akihiro | 1918.66 |
| 3 | Black | Win | Tomosue Takahito | 1526.06 |
| 5 | Black | Loss | Nakamura Souta | 2225.62 |
| 20 New Year (Mikami) Cup | ||||
| Date | 2017-01-22 | Rating | 1906.41 | |
| Round | Color | Result | Opponent | |
| A1 | White | Win | Tomobe Katsuhiro | 2109.82 |
| A2 | White | Win | Maruta Hiroki | 2081.15 |
| A3 | White | Loss | Iwano Fumio | 2229.10 |
| A4 | Black | Win | Tomobe Katsuhiro | 2109.82 |
| A5 | White | Loss | Maruta Hiroki | 2081.15 |
| A6 | Black | Loss | Iwano Fumio | 2229.10 |
| 17 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2016-11-23 | Rating | 1901.46 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2568.45 |
| 2 | White | Loss | Maruta Koji | 2124.37 |
| 3 | White | Loss | Maruta Hiroki | 2085.79 |
| 4 | Black | Loss | Iwano Fumio | 2226.72 |
| 56 Suiseisen Tournament final round | ||||
| Date | 2016-10-09 | Rating | 1899.85 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Maruta Hiroki | 2090.83 |
| 2 | Black | Loss | Iwano Fumio | 2223.20 |
| 3 | White | Loss | Fujikawa Masaki | 2062.20 |
| 56 Suiseisen Tournament 1st round | ||||
| Date | 2016-09-11 | Rating | 1900.23 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2093.16 |
| 2 | Black | Win | Yunoki Takahiro | 1765.85 |
| 3 | Black | Loss | Iwano Fumio | 2219.48 |
| 33 Kanto Shineisen Tournament | ||||
| Date | 2016-04-10 | Rating | 1903.12 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2085.49 |
| 2 | White | Loss | Nakamura Souta | 2246.25 |
| 3 | White | Win | Nishizawa Aoi | 2071.58 |
| 4 | Black | Loss | Tanizaki Ryusuke | 2141.56 |
| 5 | White | Loss | Tomobe Katsuhiro | 2102.19 |
| 19 Mikami Cup | ||||
| Date | 2016-03-13 | Rating | 1903.85 | |
| Round | Color | Result | Opponent | |
| A1 | Black | Loss | Tomobe Katsuhiro | 2099.00 |
| A2 | Black | Win | Maruta Hiroki | 2086.25 |
| A3 | White | Loss | Iwano Fumio | 2208.50 |
| A4 | White | Loss | Tomobe Katsuhiro | 2099.00 |
| A5 | White | Loss | Maruta Hiroki | 2086.25 |
| A6 | Black | Win | Iwano Fumio | 2208.50 |
| 55 Suiseisen Tournament 2nd round | ||||
| Date | 2015-10-18 | Rating | 1900.10 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Fujikawa Masaki | 2078.14 |
| 2 | White | Loss | Maruta Hiroki | 2086.26 |
| 3 | White | Draw | Tanizaki Ryusuke | 2142.84 |
| 55 Suiseisen Tournament 1st round | ||||
| Date | 2015-09-13 | Rating | 1899.78 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Tanizaki Ryusuke | 2146.93 |
| 2 | Black | Win | Tomobe Katsuhiro | 2081.53 |
| 3 | White | Loss | Maruta Hiroki | 2082.68 |
| 32 Kanto Shineisen Tournament | ||||
| Date | 2015-04-12 | Rating | 1895.06 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Tomobe Katsuhiro | 2079.85 |
| 2 | Black | Loss | Maruta Hiroki | 2057.80 |
| 3 | Black | Loss | Ozawa Tetsushi | 2020.99 |
| 4 | Black | Loss | Hashimoto Takuya | 1992.42 |
| 5 | Black | Loss | Iwano Fumio | 2210.02 |
| 31th Kanto Championship | ||||
| Date | 2014-05-11 | Rating | 1918.89 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kobayashi Koichi | 2211.17 |
| 2 | Black | Loss | Kamiya Shunsuke | 2565.23 |
| 4 | White | Win | Nakamura Souta | 2136.81 |
| 5 | White | Loss | Tada Ayako | 2276.83 |
| 31st Kanto Shineisen Tournament | ||||
| Date | 2014-04-13 | Rating | 1919.87 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Fujikawa Masaki | 2019.56 |
| 2 | Black | Loss | Tomobe Katsuhiro | 2093.72 |
| 3 | Black | Win | Sugawara Shinji | 1578.53 |
| 4 | White | Loss | Nakamura Souta | 2130.97 |
| 5 | White | Win | Kurokawa Toshihiro | 1740.76 |