Demachi Koichiro (出町浩一郎)
Place: Tokyo, Japan
Rating: 1919.13, Std: 223.48, Rank: -
First game: 2014-04-13, Last game: 2019-01-20
Top rating: 1945.51 (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 | 1919.13 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Takazawa Nagayoshi | 2162.96 |
| 2 | White | Loss | Kato Daisuke | 1886.78 |
| 3 | White | Win | Fujita Maiko | 2257.26 |
| 4 | Black | Loss | Fujikawa Masaki | 2116.20 |
| 5 | Black | Loss | Inoue Fumiya | 2405.22 |
| 19 Renju Emperor Tournament Kanto area 1st round | ||||
| Date | 2018-10-21 | Rating | 1920.84 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2564.60 |
| 2 | Black | Loss | Inoue Fumiya | 2399.48 |
| 3 | Black | Win | Tsushima Takato | 1656.44 |
| 4 | Black | Win | Ito Midori | 1757.01 |
| 10th Tohoku Championship | ||||
| Date | 2018-09-09 | Rating | 1919.88 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Miyamoto Syunju | 2264.82 |
| 3 | White | Loss | Okabe Hiroshi | 2697.99 |
| 4 | White | Loss | Kusajima Masato | 2298.56 |
| 5 | White | Loss | Hirono Masakazu | 2084.10 |
| 35 Kanto Shineisen Tournament | ||||
| Date | 2018-04-01 | Rating | 1925.37 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Yambe Manami | 1762.09 |
| 2 | White | Win | Fujikawa Masaki | 2079.71 |
| 3 | White | Loss | Iwano Fumio | 2256.79 |
| 4 | Black | Loss | Takagi Tomoyuki | 2138.27 |
| 5 | White | Loss | Fujita Maiko | 2197.04 |
| 57 Suiseisen Tournament 1st round | ||||
| Date | 2017-10-01 | Rating | 1922.27 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Koyama Akihiro | 1961.56 |
| 2 | Black | Loss | Takagi Tomoyuki | 2140.69 |
| 3 | Black | Loss | Nishizawa Aoi | 2140.39 |
| 3 | White | Win | Morita Yutaka | 1704.34 |
| 34 Kanto Shineisen Tournament | ||||
| Date | 2017-04-09 | Rating | 1932.22 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Fujikawa Masaki | 2071.77 |
| 2 | White | Loss | Takagi Tomoyuki | 2143.90 |
| 3 | Black | Win | Koyama Akihiro | 1940.33 |
| 3 | Black | Win | Tomosue Takahito | 1546.97 |
| 5 | Black | Loss | Nakamura Souta | 2256.96 |
| 20 New Year (Mikami) Cup | ||||
| Date | 2017-01-22 | Rating | 1937.12 | |
| Round | Color | Result | Opponent | |
| A1 | White | Win | Tomobe Katsuhiro | 2141.96 |
| A2 | White | Win | Maruta Hiroki | 2107.79 |
| A3 | White | Loss | Iwano Fumio | 2270.00 |
| A4 | Black | Win | Tomobe Katsuhiro | 2141.96 |
| A5 | White | Loss | Maruta Hiroki | 2107.79 |
| A6 | Black | Loss | Iwano Fumio | 2270.00 |
| 17 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2016-11-23 | Rating | 1929.42 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Koyama Jun | 2612.05 |
| 2 | White | Loss | Maruta Koji | 2161.11 |
| 3 | White | Loss | Maruta Hiroki | 2114.97 |
| 4 | Black | Loss | Iwano Fumio | 2266.25 |
| 56 Suiseisen Tournament final round | ||||
| Date | 2016-10-09 | Rating | 1926.70 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Maruta Hiroki | 2122.55 |
| 2 | Black | Loss | Iwano Fumio | 2260.88 |
| 3 | White | Loss | Fujikawa Masaki | 2090.85 |
| 56 Suiseisen Tournament 1st round | ||||
| Date | 2016-09-11 | Rating | 1927.03 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2126.06 |
| 2 | Black | Win | Yunoki Takahiro | 1781.88 |
| 3 | Black | Loss | Iwano Fumio | 2255.33 |
| 33 Kanto Shineisen Tournament | ||||
| Date | 2016-04-10 | Rating | 1930.04 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2115.09 |
| 2 | White | Loss | Nakamura Souta | 2287.71 |
| 3 | White | Win | Nishizawa Aoi | 2082.57 |
| 4 | Black | Loss | Tanizaki Ryusuke | 2170.14 |
| 5 | White | Loss | Tomobe Katsuhiro | 2131.27 |
| 19 Mikami Cup | ||||
| Date | 2016-03-13 | Rating | 1930.91 | |
| Round | Color | Result | Opponent | |
| A1 | Black | Loss | Tomobe Katsuhiro | 2126.65 |
| A2 | Black | Win | Maruta Hiroki | 2116.30 |
| A3 | White | Loss | Iwano Fumio | 2239.19 |
| A4 | White | Loss | Tomobe Katsuhiro | 2126.65 |
| A5 | White | Loss | Maruta Hiroki | 2116.30 |
| A6 | Black | Win | Iwano Fumio | 2239.19 |
| 55 Suiseisen Tournament 2nd round | ||||
| Date | 2015-10-18 | Rating | 1923.89 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Fujikawa Masaki | 2113.85 |
| 2 | White | Loss | Maruta Hiroki | 2117.12 |
| 3 | White | Draw | Tanizaki Ryusuke | 2170.12 |
| 55 Suiseisen Tournament 1st round | ||||
| Date | 2015-09-13 | Rating | 1922.97 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Tanizaki Ryusuke | 2175.80 |
| 2 | Black | Win | Tomobe Katsuhiro | 2101.22 |
| 3 | White | Loss | Maruta Hiroki | 2112.02 |
| 32 Kanto Shineisen Tournament | ||||
| Date | 2015-04-12 | Rating | 1913.88 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Tomobe Katsuhiro | 2098.78 |
| 2 | Black | Loss | Maruta Hiroki | 2076.17 |
| 3 | Black | Loss | Ozawa Tetsushi | 2043.00 |
| 4 | Black | Loss | Hashimoto Takuya | 2014.94 |
| 5 | Black | Loss | Iwano Fumio | 2242.13 |
| 31th Kanto Championship | ||||
| Date | 2014-05-11 | Rating | 1944.47 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kobayashi Koichi | 2240.60 |
| 2 | Black | Loss | Kamiya Shunsuke | 2602.55 |
| 4 | White | Win | Nakamura Souta | 2151.06 |
| 5 | White | Loss | Tada Ayako | 2310.69 |
| 31st Kanto Shineisen Tournament | ||||
| Date | 2014-04-13 | Rating | 1945.51 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Fujikawa Masaki | 2030.39 |
| 2 | Black | Loss | Tomobe Katsuhiro | 2113.94 |
| 3 | Black | Win | Sugawara Shinji | 1591.91 |
| 4 | White | Loss | Nakamura Souta | 2143.75 |
| 5 | White | Win | Kurokawa Toshihiro | 1753.79 |