Demachi Koichiro (出町浩一郎)
Place: Tokyo, Japan
Rating: 1915.04, Std: 214.34, Rank: -
First game: 2014-04-13, Last game: 2019-01-20
Top rating: 1943.46 (2014-04-13)
Games: 74, Wins: 20, Draws: 1, Losses: 53
Gy1: 0, Gy2: 0, Gy5: 0
| 22 New Year (Mikami) Cup | ||||
|---|---|---|---|---|
| Date | 2019-01-20 | Rating | 1915.04 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Takazawa Nagayoshi | 2161.74 |
| 2 | White | Loss | Kato Daisuke | 1885.05 |
| 3 | White | Win | Fujita Maiko | 2253.55 |
| 4 | Black | Loss | Fujikawa Masaki | 2112.60 |
| 5 | Black | Loss | Inoue Fumiya | 2401.66 |
| 19 Renju Emperor Tournament Kanto area 1st round | ||||
| Date | 2018-10-21 | Rating | 1916.69 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2561.52 |
| 2 | Black | Loss | Inoue Fumiya | 2395.97 |
| 3 | Black | Win | Tsushima Takato | 1649.90 |
| 4 | Black | Win | Ito Midori | 1739.41 |
| 10th Tohoku Championship | ||||
| Date | 2018-09-09 | Rating | 1915.77 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Miyamoto Syunju | 2255.98 |
| 3 | White | Loss | Okabe Hiroshi | 2694.94 |
| 4 | White | Loss | Kusajima Masato | 2290.80 |
| 5 | White | Loss | Hirono Masakazu | 2076.39 |
| 35 Kanto Shineisen Tournament | ||||
| Date | 2018-04-01 | Rating | 1921.60 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Yambe Manami | 1760.11 |
| 2 | White | Win | Fujikawa Masaki | 2076.42 |
| 3 | White | Loss | Iwano Fumio | 2253.05 |
| 4 | Black | Loss | Takagi Tomoyuki | 2134.61 |
| 5 | White | Loss | Fujita Maiko | 2193.53 |
| 57 Suiseisen Tournament 1st round | ||||
| Date | 2017-10-01 | Rating | 1918.83 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Koyama Akihiro | 1958.69 |
| 2 | Black | Loss | Takagi Tomoyuki | 2137.20 |
| 3 | Black | Loss | Nishizawa Aoi | 2136.99 |
| 3 | White | Win | Morita Yutaka | 1702.63 |
| 34 Kanto Shineisen Tournament | ||||
| Date | 2017-04-09 | Rating | 1929.05 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Fujikawa Masaki | 2068.82 |
| 2 | White | Loss | Takagi Tomoyuki | 2140.55 |
| 3 | Black | Win | Koyama Akihiro | 1937.60 |
| 3 | Black | Win | Tomosue Takahito | 1544.67 |
| 5 | Black | Loss | Nakamura Souta | 2254.59 |
| 20 New Year (Mikami) Cup | ||||
| Date | 2017-01-22 | Rating | 1934.05 | |
| Round | Color | Result | Opponent | |
| A1 | White | Win | Tomobe Katsuhiro | 2138.88 |
| A2 | White | Win | Maruta Hiroki | 2104.71 |
| A3 | White | Loss | Iwano Fumio | 2266.94 |
| A4 | Black | Win | Tomobe Katsuhiro | 2138.88 |
| A5 | White | Loss | Maruta Hiroki | 2104.71 |
| A6 | Black | Loss | Iwano Fumio | 2266.94 |
| 17 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2016-11-23 | Rating | 1926.43 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2609.77 |
| 2 | White | Loss | Maruta Koji | 2158.08 |
| 3 | White | Loss | Maruta Hiroki | 2111.98 |
| 4 | Black | Loss | Iwano Fumio | 2263.28 |
| 56 Suiseisen Tournament final round | ||||
| Date | 2016-10-09 | Rating | 1923.76 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Maruta Hiroki | 2119.63 |
| 2 | Black | Loss | Iwano Fumio | 2257.96 |
| 3 | White | Loss | Fujikawa Masaki | 2088.08 |
| 56 Suiseisen Tournament 1st round | ||||
| Date | 2016-09-11 | Rating | 1924.13 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2123.19 |
| 2 | Black | Win | Yunoki Takahiro | 1780.37 |
| 3 | Black | Loss | Iwano Fumio | 2252.44 |
| 33 Kanto Shineisen Tournament | ||||
| Date | 2016-04-10 | Rating | 1927.31 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2112.43 |
| 2 | White | Loss | Nakamura Souta | 2285.51 |
| 3 | White | Win | Nishizawa Aoi | 2079.71 |
| 4 | Black | Loss | Tanizaki Ryusuke | 2167.51 |
| 5 | White | Loss | Tomobe Katsuhiro | 2128.56 |
| 19 Mikami Cup | ||||
| Date | 2016-03-13 | Rating | 1928.21 | |
| Round | Color | Result | Opponent | |
| A1 | Black | Loss | Tomobe Katsuhiro | 2123.97 |
| A2 | Black | Win | Maruta Hiroki | 2113.67 |
| A3 | White | Loss | Iwano Fumio | 2236.52 |
| A4 | White | Loss | Tomobe Katsuhiro | 2123.97 |
| A5 | White | Loss | Maruta Hiroki | 2113.67 |
| A6 | Black | Win | Iwano Fumio | 2236.52 |
| 55 Suiseisen Tournament 2nd round | ||||
| Date | 2015-10-18 | Rating | 1921.34 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Fujikawa Masaki | 2111.42 |
| 2 | White | Loss | Maruta Hiroki | 2114.66 |
| 3 | White | Draw | Tanizaki Ryusuke | 2167.64 |
| 55 Suiseisen Tournament 1st round | ||||
| Date | 2015-09-13 | Rating | 1920.46 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Tanizaki Ryusuke | 2173.34 |
| 2 | Black | Win | Tomobe Katsuhiro | 2098.74 |
| 3 | White | Loss | Maruta Hiroki | 2109.61 |
| 32 Kanto Shineisen Tournament | ||||
| Date | 2015-04-12 | Rating | 1911.52 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Tomobe Katsuhiro | 2096.46 |
| 2 | Black | Loss | Maruta Hiroki | 2073.94 |
| 3 | Black | Loss | Ozawa Tetsushi | 2041.10 |
| 4 | Black | Loss | Hashimoto Takuya | 2013.04 |
| 5 | Black | Loss | Iwano Fumio | 2239.83 |
| 31th Kanto Championship | ||||
| Date | 2014-05-11 | Rating | 1942.39 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kobayashi Koichi | 2237.84 |
| 2 | Black | Loss | Kamiya Shunsuke | 2601.02 |
| 4 | White | Win | Nakamura Souta | 2149.15 |
| 5 | White | Loss | Tada Ayako | 2308.97 |
| 31st Kanto Shineisen Tournament | ||||
| Date | 2014-04-13 | Rating | 1943.46 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Fujikawa Masaki | 2028.39 |
| 2 | Black | Loss | Tomobe Katsuhiro | 2111.93 |
| 3 | Black | Win | Sugawara Shinji | 1590.70 |
| 4 | White | Loss | Nakamura Souta | 2141.85 |
| 5 | White | Win | Kurokawa Toshihiro | 1752.69 |