Demachi Koichiro (出町浩一郎)
Place: Tokyo, Japan
Rating: 1887.16, Std: 159.88, Rank: 716
First game: 2014-04-13, Last game: 2019-01-20
Top rating: 1916.52 (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 | 1887.16 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Takazawa Nagayoshi | 2109.08 |
| 2 | White | Loss | Kato Daisuke | 1858.23 |
| 3 | White | Win | Fujita Maiko | 2224.98 |
| 4 | Black | Loss | Fujikawa Masaki | 2082.81 |
| 5 | Black | Loss | Inoue Fumiya | 2360.33 |
| 19 Renju Emperor Tournament Kanto area 1st round | ||||
| Date | 2018-10-21 | Rating | 1888.45 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2523.19 |
| 2 | Black | Loss | Inoue Fumiya | 2355.59 |
| 3 | Black | Win | Tsushima Takato | 1631.67 |
| 4 | Black | Win | Ito Midori | 1708.93 |
| 10th Tohoku Championship | ||||
| Date | 2018-09-09 | Rating | 1887.92 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Miyamoto Syunju | 2212.35 |
| 3 | White | Loss | Okabe Hiroshi | 2651.00 |
| 4 | White | Loss | Kusajima Masato | 2235.18 |
| 5 | White | Loss | Hirono Masakazu | 2027.40 |
| 35 Kanto Shineisen Tournament | ||||
| Date | 2018-04-01 | Rating | 1892.79 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Yambe Manami | 1745.54 |
| 2 | White | Win | Fujikawa Masaki | 2054.42 |
| 3 | White | Loss | Iwano Fumio | 2210.45 |
| 4 | Black | Loss | Takagi Tomoyuki | 2104.91 |
| 5 | White | Loss | Fujita Maiko | 2181.13 |
| 57 Suiseisen Tournament 1st round | ||||
| Date | 2017-10-01 | Rating | 1891.66 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Koyama Akihiro | 1928.92 |
| 2 | Black | Loss | Takagi Tomoyuki | 2107.61 |
| 3 | Black | Loss | Nishizawa Aoi | 2108.27 |
| 3 | White | Win | Morita Yutaka | 1687.40 |
| 34 Kanto Shineisen Tournament | ||||
| Date | 2017-04-09 | Rating | 1899.12 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Fujikawa Masaki | 2046.46 |
| 2 | White | Loss | Takagi Tomoyuki | 2110.68 |
| 3 | Black | Win | Koyama Akihiro | 1915.24 |
| 3 | Black | Win | Tomosue Takahito | 1523.26 |
| 5 | Black | Loss | Nakamura Souta | 2221.55 |
| 20 New Year (Mikami) Cup | ||||
| Date | 2017-01-22 | Rating | 1902.61 | |
| Round | Color | Result | Opponent | |
| A1 | White | Win | Tomobe Katsuhiro | 2107.23 |
| A2 | White | Win | Maruta Hiroki | 2076.69 |
| A3 | White | Loss | Iwano Fumio | 2225.16 |
| A4 | Black | Win | Tomobe Katsuhiro | 2107.23 |
| A5 | White | Loss | Maruta Hiroki | 2076.69 |
| A6 | Black | Loss | Iwano Fumio | 2225.16 |
| 17 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2016-11-23 | Rating | 1897.67 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2562.88 |
| 2 | White | Loss | Maruta Koji | 2118.52 |
| 3 | White | Loss | Maruta Hiroki | 2081.38 |
| 4 | Black | Loss | Iwano Fumio | 2222.74 |
| 56 Suiseisen Tournament final round | ||||
| Date | 2016-10-09 | Rating | 1896.07 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Maruta Hiroki | 2086.47 |
| 2 | Black | Loss | Iwano Fumio | 2219.21 |
| 3 | White | Loss | Fujikawa Masaki | 2059.17 |
| 56 Suiseisen Tournament 1st round | ||||
| Date | 2016-09-11 | Rating | 1896.46 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2088.82 |
| 2 | Black | Win | Yunoki Takahiro | 1763.57 |
| 3 | Black | Loss | Iwano Fumio | 2215.48 |
| 33 Kanto Shineisen Tournament | ||||
| Date | 2016-04-10 | Rating | 1899.38 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2081.25 |
| 2 | White | Loss | Nakamura Souta | 2242.10 |
| 3 | White | Win | Nishizawa Aoi | 2066.98 |
| 4 | Black | Loss | Tanizaki Ryusuke | 2137.17 |
| 5 | White | Loss | Tomobe Katsuhiro | 2099.03 |
| 19 Mikami Cup | ||||
| Date | 2016-03-13 | Rating | 1900.12 | |
| Round | Color | Result | Opponent | |
| A1 | Black | Loss | Tomobe Katsuhiro | 2095.80 |
| A2 | Black | Win | Maruta Hiroki | 2082.02 |
| A3 | White | Loss | Iwano Fumio | 2204.48 |
| A4 | White | Loss | Tomobe Katsuhiro | 2095.80 |
| A5 | White | Loss | Maruta Hiroki | 2082.02 |
| A6 | Black | Win | Iwano Fumio | 2204.48 |
| 55 Suiseisen Tournament 2nd round | ||||
| Date | 2015-10-18 | Rating | 1896.43 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Fujikawa Masaki | 2074.62 |
| 2 | White | Loss | Maruta Hiroki | 2082.08 |
| 3 | White | Draw | Tanizaki Ryusuke | 2138.53 |
| 55 Suiseisen Tournament 1st round | ||||
| Date | 2015-09-13 | Rating | 1896.12 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Tanizaki Ryusuke | 2142.63 |
| 2 | Black | Win | Tomobe Katsuhiro | 2078.12 |
| 3 | White | Loss | Maruta Hiroki | 2078.51 |
| 32 Kanto Shineisen Tournament | ||||
| Date | 2015-04-12 | Rating | 1891.48 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Tomobe Katsuhiro | 2076.29 |
| 2 | Black | Loss | Maruta Hiroki | 2053.67 |
| 3 | Black | Loss | Ozawa Tetsushi | 2016.88 |
| 4 | Black | Loss | Hashimoto Takuya | 1988.95 |
| 5 | Black | Loss | Iwano Fumio | 2205.97 |
| 31th Kanto Championship | ||||
| Date | 2014-05-11 | Rating | 1915.53 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kobayashi Koichi | 2207.18 |
| 2 | Black | Loss | Kamiya Shunsuke | 2560.81 |
| 4 | White | Win | Nakamura Souta | 2132.84 |
| 5 | White | Loss | Tada Ayako | 2272.82 |
| 31st Kanto Shineisen Tournament | ||||
| Date | 2014-04-13 | Rating | 1916.52 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Fujikawa Masaki | 2015.87 |
| 2 | Black | Loss | Tomobe Katsuhiro | 2089.93 |
| 3 | Black | Win | Sugawara Shinji | 1576.21 |
| 4 | White | Loss | Nakamura Souta | 2127.02 |
| 5 | White | Win | Kurokawa Toshihiro | 1738.63 |