Gakumazawa Hideaki (嶽間沢秀明)

Place: Iwate, Japan

Rating: 2173.22, Std: 92.28, Rank: 492

First game: 2004-12-05, Last game: 2026-06-27

Top rating: 2215.73 (2017-07-02)

Games: 209, Wins: 100, Draws: 13, Losses: 96

Gy1: 19, Gy2: 32, Gy5: 55

40 Aomori Championship
Date	2026-06-27		Rating	2173.22
Round	Color	Result	Opponent
1	White	Loss	Shimura Hiroki	2255.34
2	White	Win	Kawaai Hitoshi	2064.35
3	White	Win	Tanno Yoshitaka	2032.53
4	White	Loss	Ishitani Shin-ichi	2326.12
5	Black	Win	Ooshina Seiichi	2001.05
64rd Meijinsen Qualification Tohoku area 1st round
Date	2026-05-16		Rating	2172.05
Round	Color	Result	Opponent
1	White	Win	Kawaai Hitoshi	2061.65
2	White	Loss	Miyamoto Syunju	2337.01
3	White	Win	Kusajima Masato	2259.24
4	Black	Win	Kawaai Hitoshi	2061.65
5	White	Loss	Miyamoto Syunju	2337.01
6	White	Loss	Kusajima Masato	2259.24
5th Masters Renju Tournament
Date	2026-01-25		Rating	2164.28
Round	Color	Result	Opponent
1	Black	Loss	Ishitani Shin-ichi	2345.27
2	Black	Loss	Iwano Fumio	2158.77
3	White	Loss	Miyamoto Syunju	2332.74
4	Black	Loss	Kawamura Norihiko	2537.76
5	Black	Draw	Kuga Akio	2404.35
41 Aomori Championship
Date	2025-11-29		Rating	2165.66
Round	Color	Result	Opponent
1	White	Win	Tanno Yoshitaka	2048.41
2	White	Win	Miyamoto Syunju	2322.00
3	Black	Win	Ooshina Seiichi	1976.70
39 Aomori Championship
Date	2025-06-28		Rating	2147.15
Round	Color	Result	Opponent
1	White	Win	Ooshina Seiichi	1972.04
2	White	Loss	Tanno Yoshitaka	2061.94
3	White	Loss	Kawaai Hitoshi	2066.71
4	White	Draw	Ishitani Shin-ichi	2367.73
5	White	Win	Miyamoto Syunju	2312.21
63rd Meijinsen Qualification Tohoku area 1st round
Date	2025-05-18		Rating	2142.06
Round	Color	Result	Opponent
1	White	Loss	Shimura Hiroki	2253.61
2	White	Draw	Kawaai Hitoshi	2066.98
4	White	Loss	Miyamoto Syunju	2312.54
5	Black	Draw	Kusajima Masato	2237.68
16th Tohoku Championship
Date	2025-03-09		Rating	2137.96
Round	Color	Result	Opponent
2	White	Loss	Ishitani Shin-ichi	2388.22
3	White	Loss	Shimura Hiroki	2246.93
4	Black	Draw	Kusajima Masato	2239.10
5	White	Win	Tamura Syougo	1768.40
38 Aomori Championship
Date	2024-06-29		Rating	2131.32
Round	Color	Result	Opponent
1	White	Win	Kawaai Hitoshi	2038.62
2	Black	Loss	Ishitani Shin-ichi	2416.08
3	White	Loss	Miyamoto Syunju	2354.05
5	White	Win	Tanno Yoshitaka	2059.71
62nd Meijinsen Qualification Tohoku area 1st round
Date	2024-05-19		Rating	2128.48
Round	Color	Result	Opponent
1	Black	Loss	Fujita Maiko	2431.71
2	White	Win	Shimura Hiroki	2168.19
3	Black	Loss	Miyamoto Syunju	2363.35
4	Black	Draw	Kusajima Masato	2269.84
5	Black	Win	Kawaai Hitoshi	2035.60
15th Tohoku Championship
Date	2024-03-31		Rating	2120.92
Round	Color	Result	Opponent
1	White	Loss	Ishitani Shin-ichi	2420.93
2	Black	Loss	Miyamoto Syunju	2366.63
3	Black	Loss	Kusajima Masato	2273.77
4	Black	Loss	Kawaai Hitoshi	2038.07
5	White	Loss	Fujita Maiko	2424.04
61th Meijinsen Qualification Tohoku area 1st round
Date	2023-05-21		Rating	2121.48
Round	Color	Result	Opponent
1	White	Loss	Inoue Fumiya	2535.02
2	White	Win	Kawaai Hitoshi	2053.26
4	Black	Loss	Kusajima Masato	2273.43
5	White	Draw	Miyamoto Syunju	2302.60
14th Tohoku Championship
Date	2023-02-19		Rating	2118.98
Round	Color	Result	Opponent
1	White	Win	Kawaai Hitoshi	2062.25
2	Black	Loss	Miyamoto Syunju	2279.21
3	White	Loss	Oomura Shu	2371.19
4	White	Loss	Kusajima Masato	2273.12
5	Black	Loss	Inoue Fumiya	2536.92
11th Tohoku Championship
Date	2019-10-06		Rating	2143.89
Round	Color	Result	Opponent
1	Black	Loss	Miyamoto Syunju	2298.91
2	White	Draw	Ishitani Shin-ichi	2383.35
3	Black	Win	Kusajima Masato	2245.27
4	Black	Loss	Hirono Masakazu	2057.08
5	Black	Loss	Okabe Hiroshi	2730.31
57 Meijinsen Qualification Tohoku area 1st round
Date	2019-04-07		Rating	2147.68
Round	Color	Result	Opponent
1	White	Draw	Miyamoto Syunju	2276.67
2	White	Loss	Kusajima Masato	2273.06
4	Black	Loss	Miyamoto Syunju	2276.67
5	White	Loss	Kusajima Masato	2273.06
35 Aomori Championship
Date	2018-07-01		Rating	2178.36
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1630.45
2	Black	Loss	Miyamoto Syunju	2265.85
3	Black	Loss	Tanno Yoshitaka	2136.00
56 Meijinsen Qualification Tohoku area 1st round
Date	2018-04-15		Rating	2194.47
Round	Color	Result	Opponent
2	White	Win	Miyamoto Syunju	2259.20
3	White	Win	Kusajima Masato	2310.57
4	Black	Win	Miyamoto Syunju	2259.20
5	Black	Loss	Kusajima Masato	2310.57
Aomori Meijinsen Tournament
Date	2017-11-05		Rating	2201.20
Round	Color	Result	Opponent
1	Black	Loss	Tanno Yoshitaka	2137.97
2	Black	Win	Ooshina Seiichi	2031.26
3	White	Win	Koseki Kenshou	1643.20
5	White	Loss	Miyamoto Syunju	2283.72
34 Aomori Championship
Date	2017-07-02		Rating	2215.73
Round	Color	Result	Opponent
1	Black	Win	Yamamoto Harue	1635.21
2	Black	Win	Koseki Kenshou	1653.80
3	White	Win	Kusajima Masato	2284.95
4	White	Win	Tanno Yoshitaka	2143.30
5	White	Win	Miyamoto Syunju	2274.92
55 Meijinsen Qualification Tohoku area 1st round
Date	2017-04-09		Rating	2210.00
Round	Color	Result	Opponent
1	White	Win	Miyamoto Syunju	2259.10
3	White	Loss	Kusajima Masato	2289.86
4	Black	Loss	Kusajima Masato	2289.86
5	White	Loss	Miyamoto Syunju	2259.10
54 Meijinsen Qualification Tohoku area 1st round
Date	2016-04-10		Rating	2210.79
Round	Color	Result	Opponent
1	White	Draw	Kusajima Masato	2267.85
2	White	Win	Miyamoto Syunju	2160.12
3	Black	Win	Miura Hitoshi	1776.66
32nd Aomori Championship
Date	2015-07-05		Rating	2193.21
Round	Color	Result	Opponent
1	White	Win	Ooshina Seiichi	2035.15
2	Black	Loss	Tanno Yoshitaka	2167.29
3	White	Win	Yamamoto Harue	1693.76
4	Black	Loss	Kobayashi Koichi	2287.73
5	White	Win	Koseki Kenshou	1688.72
7th Tohoku Championship
Date	2015-04-12		Rating	2192.72
Round	Color	Result	Opponent
1	Black	Loss	Okabe Hiroshi	2739.67
2	Black	Win	Miura Hitoshi	1792.50
3	Black	Loss	Ishitani Shin-ichi	2424.67
4	Black	Win	Miyamoto Syunju	2058.61
5	Black	Win	Kobayashi Koichi	2296.30
Sendai Memorial Cup
Date	2015-03-01		Rating	2188.72
Round	Color	Result	Opponent
1	Black	Win	Miura Hitoshi	1794.98
4	White	Loss	Kobayashi Koichi	2295.50
6	Black	Win	Miyamoto Syunju	2048.71
7	White	Win	Hirono Masakazu	1987.16
33th Aomori Meijinsen
Date	2014-11-09		Rating	2174.47
Round	Color	Result	Opponent
1	Black	Win	Shimoda Hiroyasu	1579.48
2	White	Loss	Kobayashi Koichi	2273.77
3	White	Win	Yamamoto Harue	1714.45
4	Black	Win	Koseki Kenshou	1702.53
5	Black	Loss	Tanno Yoshitaka	2168.45
6th Tohoku Championship
Date	2014-04-20		Rating	2164.64
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2237.08
2	White	Win	Kobayashi Koichi	2241.82
3	White	Win	Hirono Masakazu	1989.05
4	Black	Loss	Okabe Hiroshi	2759.60
5	Black	Win	Sato Kiyotomi	2470.89
7	Black	Loss	Miura Hitoshi	1803.55
32 Aomori Meijinsen
Date	2013-11-10		Rating	2149.48
Round	Color	Result	Opponent
1	White	Loss	Yamamoto Harue	1761.25
2	Black	Win	Koseki Kenshou	1695.95
3	White	Win	Miura Hitoshi	1795.20
4	White	Win	Chiba Tomio	1785.78
5	Black	Win	Tanno Yoshitaka	2157.25
5th Tohoku Championship
Date	2013-04-14		Rating	2132.00
Round	Color	Result	Opponent
1	Black	Loss	Okabe Hiroshi	2742.36
2	Black	Loss	Suzuki Rin	2052.18
3	White	Loss	Nakamura Shigeru	2867.59
4	Black	Win	Miura Hitoshi	1829.28
5	White	Loss	Kusajima Masato	2215.89
31st Aomori Meijinsen
Date	2012-11-10		Rating	2134.40
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1714.85
2	Black	Win	Kudou Shin-ichi	1889.90
3	Black	Win	Asari Katsuki	1721.74
4	Black	Win	Miura Hitoshi	1867.60
5	Black	Win	Tanno Yoshitaka	2151.57
30th Aomori Championship
Date	2012-07-01		Rating	2120.83
Round	Color	Result	Opponent
1	Black	Loss	Kudou Shin-ichi	1895.29
2	White	Win	Yamamoto Harue	1701.12
3	White	Draw	Kim Chang-Su	2038.47
4	Black	Win	Yokono Yoshiki	1855.20
5	White	Loss	Tanno Yoshitaka	2149.92
4th Tohoku Championship
Date	2012-04-08		Rating	2122.45
Round	Color	Result	Opponent
1	Black	Loss	Kudomi Takahiro	2431.01
2	Black	Loss	Ozawa Tetsushi	2062.02
3	White	Win	Suzuki Junichiro	1938.59
4	Black	Win	Maruta Hiroki	2087.38
5	Black	Draw	Kobayashi Koichi	2225.80
7th All Japan Championship
Date	2012-01-29		Rating	2122.87
Round	Color	Result	Opponent
1	Black	Loss	Ishitani Shin-ichi	2381.67
2	Black	Loss	Kamiya Shunsuke	2462.16
3	White	Win	Suzuki Rin	1995.88
4	Black	Loss	Kudomi Takahiro	2428.07
5	Black	Win	Fujikawa Masaki	2075.42
6	Black	Loss	Kon Akira	2020.84
30th Aomori-Meijinsen touranament
Date	2011-11-13		Rating	2126.24
Round	Color	Result	Opponent
1	Black	Win	Yamamoto Harue	1668.24
2	White	Win	Yamamoto Yuuichi	1717.12
3	Black	Win	Tsushima Norito	1692.48
4	Black	Win	Tanno Yoshitaka	2126.28
5	White	Win	Nara Tsurue	1808.54
29th Aomori Championship
Date	2011-07-03		Rating	2119.24
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1672.97
2	Black	Win	Tanno Yoshitaka	2113.63
3	Black	Loss	Yokono Yoshiki	1896.77
3rd Tohoku Championship
Date	2011-02-27		Rating	2115.67
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1686.84
2	Black	Win	Yokono Yoshiki	1894.98
3	Black	Loss	Miyagawa Sou	2122.74
4	Black	Loss	Fukui Nobuhiro	2393.25
5	Black	Win	Miura Hitoshi	1934.80
14th Mikami Cup Tournament
Date	2011-01-30		Rating	2115.19
Round	Color	Result	Opponent
S1	Black	Loss	Mitsumori Masao	2330.39
S3	White	Loss	Isobe Taizan	2410.01
S4	Black	Loss	Ishitani Shin-ichi	2393.81
S5	White	Loss	Ono Takayuki	2394.92
29th Aomori-Meijinsen Tournament
Date	2010-11-14		Rating	2119.98
Round	Color	Result	Opponent
1	Black	Win	Yokono Yoshiki	1901.01
2	Black	Win	Chiba Tomio	1749.99
3	Black	Win	Miura Hitoshi	1943.05
4	Black	Win	Yamamoto Harue	1700.56
5	Black	Loss	Tanno Yoshitaka	2097.61
2nd Tohoku Championship
Date	2010-03-14		Rating	2131.32
Round	Color	Result	Opponent
1	Black	Loss	Hirono Masakazu	1970.11
2	Black	Loss	Ishitani Shin-ichi	2398.13
3	Black	Win	Miura Hitoshi	1926.88
4	White	Win	Kobayashi Koichi	2132.97
5	White	Win	Seiryu Masanori	1987.80
28th Aomori-Meijinsen Tournament
Date	2009-11-01		Rating	2135.28
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1708.41
2	White	Loss	Tamada Yoichi	2405.68
3	White	Win	Chiba Tomio	1750.76
4	Black	Win	Yamamoto Yuuichi	1711.15
5	White	Loss	Miyagawa Sou	2135.99
8th Middle-dan Players Tournament
Date	2009-08-30		Rating	2140.06
Round	Color	Result	Opponent
1	Black	Win	Kobayashi Koichi	2132.81
2	Black	Loss	Koyama Jun	2445.67
3	Black	Loss	Maruyama Yasushi	2264.16
4	Black	Loss	Yamamoto Yasuhiro	2149.93
5	White	Loss	Kubo Izumi	2115.01
6	Black	Win	Kato Yasuhiro	2050.40
1st Tohoku Championship
Date	2009-02-22		Rating	2167.73
Round	Color	Result	Opponent
1	White	Win	Miura Hitoshi	1937.72
2	Black	Win	Sato Ryota	1526.10
3	Black	Loss	Ishitani Shin-ichi	2393.98
4	Black	Loss	Sato Kiyotomi	2453.10
5	Black	Loss	Tanno Yoshitaka	2120.13
12th Mikami Cup Tournament
Date	2009-01-18		Rating	2175.61
Round	Color	Result	Opponent
A1	Black	Win	Tamada Yoichi	2280.29
A2	White	Win	Tomobe Katsuhiro	2110.44
A3	Black	Win	Kobayashi Koichi	2116.73
A4	White	Win	Tanizaki Ryusuke	2131.62
A5	Black	Loss	Ono Takayuki	2411.72
7th 6-7 dan Tournament
Date	2008-09-28		Rating	2179.65
Round	Color	Result	Opponent
1	Black	Win	Kubo Izumi	2109.53
2	Black	Loss	Ono Takayuki	2410.75
3	Black	Loss	Kobayashi Koichi	2109.88
4	White	Win	Kato Yasuhiro	1998.10
5	White	Win	Tamura Kazumasa	2470.76
6	Black	Loss	Maruyama Yasushi	2235.17
6dan 7dan Tournament
Date	2007-10-08		Rating	2181.66
Round	Color	Result	Opponent
1	Black	Draw	Nagao Noriaki	2249.17
2	White	Win	Yamamoto Yasuhiro	2093.41
3	Black	Win	Kato Yasuhiro	1969.98
4	Black	Win	Ono Takayuki	2376.80
5	White	Loss	Sato Kiyotomi	2402.27
6	Black	Loss	Tamura Kazumasa	2408.13
5th 6-7 dan Tournament
Date	2004-12-05		Rating	2069.82
Round	Color	Result	Opponent
1	Black	Loss	Sato Kiyotomi	2368.25
2	Black	Win	Yamamoto Yasuhiro	2053.99
3	Black	Loss	Arita Nobuyoshi	2281.23
4	Black	Win	Tadokoro Hosai	1926.94
5	Black	Loss	Hiwatashi Kikuma	1951.48
6	White	Loss	Miyagawa Junzo	2255.75